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authorTom Rini <trini@konsulko.com>2020-10-05 20:05:46 +0300
committerTom Rini <trini@konsulko.com>2020-10-05 21:10:59 +0300
commitb7e7831e5d5be047f421ddc1f308afc22764a893 (patch)
tree7d5f27c82b260278ed0b3ea96bce592b0505b898 /drivers/clk
parent050acee119b3757fee3bd128f55d720fdd9bb890 (diff)
parentcaebff09efe8c061b4d99b82262c67fb2db9bbcf (diff)
downloadu-boot-b7e7831e5d5be047f421ddc1f308afc22764a893.tar.xz
Merge branch 'next'
Bring in the assorted changes that have been staged in the 'next' branch prior to release. Signed-off-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'drivers/clk')
-rw-r--r--drivers/clk/Kconfig8
-rw-r--r--drivers/clk/Makefile1
-rw-r--r--drivers/clk/aspeed/clk_ast2500.c40
-rw-r--r--drivers/clk/at91/Kconfig7
-rw-r--r--drivers/clk/at91/Makefile15
-rw-r--r--drivers/clk/at91/clk-generated.c178
-rw-r--r--drivers/clk/at91/clk-generic.c202
-rw-r--r--drivers/clk/at91/clk-h32mx.c56
-rw-r--r--drivers/clk/at91/clk-main.c381
-rw-r--r--drivers/clk/at91/clk-master.c331
-rw-r--r--drivers/clk/at91/clk-peripheral.c291
-rw-r--r--drivers/clk/at91/clk-plla.c54
-rw-r--r--drivers/clk/at91/clk-plladiv.c85
-rw-r--r--drivers/clk/at91/clk-programmable.c208
-rw-r--r--drivers/clk/at91/clk-sam9x60-pll.c442
-rw-r--r--drivers/clk/at91/clk-slow.c36
-rw-r--r--drivers/clk/at91/clk-system.c143
-rw-r--r--drivers/clk/at91/clk-usb.c147
-rw-r--r--drivers/clk/at91/clk-utmi.c234
-rw-r--r--drivers/clk/at91/compat.c1023
-rw-r--r--drivers/clk/at91/pmc.c218
-rw-r--r--drivers/clk/at91/pmc.h140
-rw-r--r--drivers/clk/at91/sama7g5.c1401
-rw-r--r--drivers/clk/at91/sckc.c169
-rw-r--r--drivers/clk/clk-uclass.c51
-rw-r--r--drivers/clk/clk.c3
-rw-r--r--drivers/clk/clk_fixed_rate.c1
-rw-r--r--drivers/clk/clk_scmi.c99
-rw-r--r--drivers/clk/clk_zynqmp.c2
-rw-r--r--drivers/clk/kendryte/clk.c4
30 files changed, 5023 insertions, 947 deletions
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 6003e140b5..4dfbad7986 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -159,6 +159,14 @@ config CLK_CDCE9XX
Enable the clock synthesizer driver for CDCE913/925/937/949
series of chips.
+config CLK_SCMI
+ bool "Enable SCMI clock driver"
+ depends on SCMI_FIRMWARE
+ help
+ Enable this option if you want to support clock devices exposed
+ by a SCMI agent based on SCMI clock protocol communication
+ with a SCMI server.
+
source "drivers/clk/analogbits/Kconfig"
source "drivers/clk/at91/Kconfig"
source "drivers/clk/exynos/Kconfig"
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index cda4b4b605..d1e295ac7c 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -32,6 +32,7 @@ obj-$(CONFIG_CLK_MPC83XX) += mpc83xx_clk.o
obj-$(CONFIG_CLK_OCTEON) += clk_octeon.o
obj-$(CONFIG_CLK_OWL) += owl/
obj-$(CONFIG_CLK_RENESAS) += renesas/
+obj-$(CONFIG_CLK_SCMI) += clk_scmi.o
obj-$(CONFIG_CLK_SIFIVE) += sifive/
obj-$(CONFIG_ARCH_SUNXI) += sunxi/
obj-$(CONFIG_CLK_STM32F) += clk_stm32f.o
diff --git a/drivers/clk/aspeed/clk_ast2500.c b/drivers/clk/aspeed/clk_ast2500.c
index d1940f1884..aab7d14deb 100644
--- a/drivers/clk/aspeed/clk_ast2500.c
+++ b/drivers/clk/aspeed/clk_ast2500.c
@@ -10,7 +10,7 @@
#include <asm/io.h>
#include <asm/arch/scu_ast2500.h>
#include <dm/lists.h>
-#include <dt-bindings/clock/ast2500-scu.h>
+#include <dt-bindings/clock/aspeed-clock.h>
#include <linux/delay.h>
#include <linux/err.h>
@@ -122,8 +122,7 @@ static ulong ast2500_clk_get_rate(struct clk *clk)
ulong rate;
switch (clk->id) {
- case PLL_HPLL:
- case ARMCLK:
+ case ASPEED_CLK_HPLL:
/*
* This ignores dynamic/static slowdown of ARMCLK and may
* be inaccurate.
@@ -131,11 +130,11 @@ static ulong ast2500_clk_get_rate(struct clk *clk)
rate = ast2500_get_hpll_rate(clkin,
readl(&priv->scu->h_pll_param));
break;
- case MCLK_DDR:
+ case ASPEED_CLK_MPLL:
rate = ast2500_get_mpll_rate(clkin,
readl(&priv->scu->m_pll_param));
break;
- case BCLK_PCLK:
+ case ASPEED_CLK_APB:
{
ulong apb_div = 4 + 4 * ((readl(&priv->scu->clk_sel1)
& SCU_PCLK_DIV_MASK)
@@ -146,7 +145,7 @@ static ulong ast2500_clk_get_rate(struct clk *clk)
rate = rate / apb_div;
}
break;
- case BCLK_SDCLK:
+ case ASPEED_CLK_SDIO:
{
ulong apb_div = 4 + 4 * ((readl(&priv->scu->clk_sel1)
& SCU_SDCLK_DIV_MASK)
@@ -157,19 +156,19 @@ static ulong ast2500_clk_get_rate(struct clk *clk)
rate = rate / apb_div;
}
break;
- case PCLK_UART1:
+ case ASPEED_CLK_GATE_UART1CLK:
rate = ast2500_get_uart_clk_rate(priv->scu, 1);
break;
- case PCLK_UART2:
+ case ASPEED_CLK_GATE_UART2CLK:
rate = ast2500_get_uart_clk_rate(priv->scu, 2);
break;
- case PCLK_UART3:
+ case ASPEED_CLK_GATE_UART3CLK:
rate = ast2500_get_uart_clk_rate(priv->scu, 3);
break;
- case PCLK_UART4:
+ case ASPEED_CLK_GATE_UART4CLK:
rate = ast2500_get_uart_clk_rate(priv->scu, 4);
break;
- case PCLK_UART5:
+ case ASPEED_CLK_GATE_UART5CLK:
rate = ast2500_get_uart_clk_rate(priv->scu, 5);
break;
default:
@@ -431,11 +430,10 @@ static ulong ast2500_clk_set_rate(struct clk *clk, ulong rate)
ulong new_rate;
switch (clk->id) {
- case PLL_MPLL:
- case MCLK_DDR:
+ case ASPEED_CLK_MPLL:
new_rate = ast2500_configure_ddr(priv->scu, rate);
break;
- case PLL_D2PLL:
+ case ASPEED_CLK_D2PLL:
new_rate = ast2500_configure_d2pll(priv->scu, rate);
break;
default:
@@ -450,7 +448,7 @@ static int ast2500_clk_enable(struct clk *clk)
struct ast2500_clk_priv *priv = dev_get_priv(clk->dev);
switch (clk->id) {
- case BCLK_SDCLK:
+ case ASPEED_CLK_SDIO:
if (readl(&priv->scu->clk_stop_ctrl1) & SCU_CLKSTOP_SDCLK) {
ast_scu_unlock(priv->scu);
@@ -471,13 +469,13 @@ static int ast2500_clk_enable(struct clk *clk)
* configured based on whether RGMII or RMII mode has been selected
* through hardware strapping.
*/
- case PCLK_MAC1:
+ case ASPEED_CLK_GATE_MAC1CLK:
ast2500_configure_mac(priv->scu, 1);
break;
- case PCLK_MAC2:
+ case ASPEED_CLK_GATE_MAC2CLK:
ast2500_configure_mac(priv->scu, 2);
break;
- case PLL_D2PLL:
+ case ASPEED_CLK_D2PLL:
ast2500_configure_d2pll(priv->scu, D2PLL_DEFAULT_RATE);
break;
default:
@@ -497,9 +495,9 @@ static int ast2500_clk_ofdata_to_platdata(struct udevice *dev)
{
struct ast2500_clk_priv *priv = dev_get_priv(dev);
- priv->scu = dev_read_addr_ptr(dev);
- if (!priv->scu)
- return -EINVAL;
+ priv->scu = devfdt_get_addr_ptr(dev);
+ if (IS_ERR(priv->scu))
+ return PTR_ERR(priv->scu);
return 0;
}
diff --git a/drivers/clk/at91/Kconfig b/drivers/clk/at91/Kconfig
index 8d482a2752..4abc8026b4 100644
--- a/drivers/clk/at91/Kconfig
+++ b/drivers/clk/at91/Kconfig
@@ -54,3 +54,10 @@ config AT91_GENERIC_CLK
that may be different from the system clock. This second
clock is the generic clock (GCLK) and is managed by
the PMC via PMC_PCR register.
+
+config AT91_SAM9X60_PLL
+ bool "PLL support for SAM9X60 SoCs"
+ depends on CLK_AT91
+ help
+ This option is used to enable the AT91 SAM9X60's PLL clock
+ driver.
diff --git a/drivers/clk/at91/Makefile b/drivers/clk/at91/Makefile
index 8c197ff949..2453c38af1 100644
--- a/drivers/clk/at91/Makefile
+++ b/drivers/clk/at91/Makefile
@@ -2,11 +2,14 @@
# Makefile for at91 specific clk
#
-obj-y += pmc.o sckc.o
-obj-y += clk-slow.o clk-main.o clk-plla.o clk-plladiv.o clk-master.o
-obj-y += clk-system.o clk-peripheral.o
+ifdef CONFIG_CLK_CCF
+obj-y += pmc.o sckc.o clk-main.o clk-master.o clk-programmable.o clk-system.o
+obj-y += clk-peripheral.o
+obj-$(CONFIG_AT91_GENERIC_CLK) += clk-generic.o
obj-$(CONFIG_AT91_UTMI) += clk-utmi.o
-obj-$(CONFIG_AT91_USB_CLK) += clk-usb.o
-obj-$(CONFIG_AT91_H32MX) += clk-h32mx.o
-obj-$(CONFIG_AT91_GENERIC_CLK) += clk-generated.o
+obj-$(CONFIG_AT91_SAM9X60_PLL) += clk-sam9x60-pll.o
+obj-$(CONFIG_SAMA7G5) += sama7g5.o
+else
+obj-y += compat.o
+endif
diff --git a/drivers/clk/at91/clk-generated.c b/drivers/clk/at91/clk-generated.c
deleted file mode 100644
index c0610940c3..0000000000
--- a/drivers/clk/at91/clk-generated.c
+++ /dev/null
@@ -1,178 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2016 Atmel Corporation
- * Wenyou.Yang <wenyou.yang@atmel.com>
- */
-
-#include <common.h>
-#include <clk-uclass.h>
-#include <dm.h>
-#include <log.h>
-#include <malloc.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <mach/at91_pmc.h>
-#include "pmc.h"
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#define GENERATED_SOURCE_MAX 6
-#define GENERATED_MAX_DIV 255
-
-/**
- * generated_clk_bind() - for the generated clock driver
- * Recursively bind its children as clk devices.
- *
- * @return: 0 on success, or negative error code on failure
- */
-static int generated_clk_bind(struct udevice *dev)
-{
- return at91_clk_sub_device_bind(dev, "generic-clk");
-}
-
-static const struct udevice_id generated_clk_match[] = {
- { .compatible = "atmel,sama5d2-clk-generated" },
- {}
-};
-
-U_BOOT_DRIVER(generated_clk) = {
- .name = "generated-clk",
- .id = UCLASS_MISC,
- .of_match = generated_clk_match,
- .bind = generated_clk_bind,
-};
-
-/*-------------------------------------------------------------*/
-
-struct generic_clk_priv {
- u32 num_parents;
-};
-
-static ulong generic_clk_get_rate(struct clk *clk)
-{
- struct pmc_platdata *plat = dev_get_platdata(clk->dev);
- struct at91_pmc *pmc = plat->reg_base;
- struct clk parent;
- ulong clk_rate;
- u32 tmp, gckdiv;
- u8 clock_source, parent_index;
- int ret;
-
- writel(clk->id & AT91_PMC_PCR_PID_MASK, &pmc->pcr);
- tmp = readl(&pmc->pcr);
- clock_source = (tmp >> AT91_PMC_PCR_GCKCSS_OFFSET) &
- AT91_PMC_PCR_GCKCSS_MASK;
- gckdiv = (tmp >> AT91_PMC_PCR_GCKDIV_OFFSET) & AT91_PMC_PCR_GCKDIV_MASK;
-
- parent_index = clock_source - 1;
- ret = clk_get_by_index(dev_get_parent(clk->dev), parent_index, &parent);
- if (ret)
- return 0;
-
- clk_rate = clk_get_rate(&parent) / (gckdiv + 1);
-
- clk_free(&parent);
-
- return clk_rate;
-}
-
-static ulong generic_clk_set_rate(struct clk *clk, ulong rate)
-{
- struct pmc_platdata *plat = dev_get_platdata(clk->dev);
- struct at91_pmc *pmc = plat->reg_base;
- struct generic_clk_priv *priv = dev_get_priv(clk->dev);
- struct clk parent, best_parent;
- ulong tmp_rate, best_rate = rate, parent_rate;
- int tmp_diff, best_diff = -1;
- u32 div, best_div = 0;
- u8 best_parent_index, best_clock_source = 0;
- u8 i;
- u32 tmp;
- int ret;
-
- for (i = 0; i < priv->num_parents; i++) {
- ret = clk_get_by_index(dev_get_parent(clk->dev), i, &parent);
- if (ret)
- return ret;
-
- parent_rate = clk_get_rate(&parent);
- if (IS_ERR_VALUE(parent_rate))
- return parent_rate;
-
- for (div = 1; div < GENERATED_MAX_DIV + 2; div++) {
- tmp_rate = DIV_ROUND_CLOSEST(parent_rate, div);
- tmp_diff = abs(rate - tmp_rate);
-
- if (best_diff < 0 || best_diff > tmp_diff) {
- best_rate = tmp_rate;
- best_diff = tmp_diff;
-
- best_div = div - 1;
- best_parent = parent;
- best_parent_index = i;
- best_clock_source = best_parent_index + 1;
- }
-
- if (!best_diff || tmp_rate < rate)
- break;
- }
-
- if (!best_diff)
- break;
- }
-
- debug("GCK: best parent: %s, best_rate = %ld, best_div = %d\n",
- best_parent.dev->name, best_rate, best_div);
-
- ret = clk_enable(&best_parent);
- if (ret)
- return ret;
-
- writel(clk->id & AT91_PMC_PCR_PID_MASK, &pmc->pcr);
- tmp = readl(&pmc->pcr);
- tmp &= ~(AT91_PMC_PCR_GCKDIV | AT91_PMC_PCR_GCKCSS);
- tmp |= AT91_PMC_PCR_GCKCSS_(best_clock_source) |
- AT91_PMC_PCR_CMD_WRITE |
- AT91_PMC_PCR_GCKDIV_(best_div) |
- AT91_PMC_PCR_GCKEN;
- writel(tmp, &pmc->pcr);
-
- while (!(readl(&pmc->sr) & AT91_PMC_GCKRDY))
- ;
-
- return 0;
-}
-
-static struct clk_ops generic_clk_ops = {
- .of_xlate = at91_clk_of_xlate,
- .get_rate = generic_clk_get_rate,
- .set_rate = generic_clk_set_rate,
-};
-
-static int generic_clk_ofdata_to_platdata(struct udevice *dev)
-{
- struct generic_clk_priv *priv = dev_get_priv(dev);
- u32 cells[GENERATED_SOURCE_MAX];
- u32 num_parents;
-
- num_parents = fdtdec_get_int_array_count(gd->fdt_blob,
- dev_of_offset(dev_get_parent(dev)), "clocks", cells,
- GENERATED_SOURCE_MAX);
-
- if (!num_parents)
- return -1;
-
- priv->num_parents = num_parents;
-
- return 0;
-}
-
-U_BOOT_DRIVER(generic_clk) = {
- .name = "generic-clk",
- .id = UCLASS_CLK,
- .probe = at91_clk_probe,
- .ofdata_to_platdata = generic_clk_ofdata_to_platdata,
- .priv_auto_alloc_size = sizeof(struct generic_clk_priv),
- .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
- .ops = &generic_clk_ops,
-};
diff --git a/drivers/clk/at91/clk-generic.c b/drivers/clk/at91/clk-generic.c
new file mode 100644
index 0000000000..87738b7b5b
--- /dev/null
+++ b/drivers/clk/at91/clk-generic.c
@@ -0,0 +1,202 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Generic clock support for AT91 architectures.
+ *
+ * Copyright (C) 2020 Microchip Technology Inc. and its subsidiaries
+ *
+ * Author: Claudiu Beznea <claudiu.beznea@microchip.com>
+ *
+ * Based on drivers/clk/at91/clk-generated.c from Linux.
+ */
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <linux/io.h>
+#include <linux/clk-provider.h>
+#include <linux/clk/at91_pmc.h>
+
+#include "pmc.h"
+
+#define UBOOT_DM_CLK_AT91_GCK "at91-gck-clk"
+
+#define GENERATED_MAX_DIV 255
+
+struct clk_gck {
+ void __iomem *base;
+ const u32 *clk_mux_table;
+ const u32 *mux_table;
+ const struct clk_pcr_layout *layout;
+ struct clk_range range;
+ struct clk clk;
+ u32 num_parents;
+ u32 id;
+};
+
+#define to_clk_gck(_c) container_of(_c, struct clk_gck, clk)
+
+static int clk_gck_enable(struct clk *clk)
+{
+ struct clk_gck *gck = to_clk_gck(clk);
+
+ pmc_write(gck->base, gck->layout->offset,
+ (gck->id & gck->layout->pid_mask));
+ pmc_update_bits(gck->base, gck->layout->offset,
+ gck->layout->cmd | AT91_PMC_PCR_GCKEN,
+ gck->layout->cmd | AT91_PMC_PCR_GCKEN);
+
+ return 0;
+}
+
+static int clk_gck_disable(struct clk *clk)
+{
+ struct clk_gck *gck = to_clk_gck(clk);
+
+ pmc_write(gck->base, gck->layout->offset,
+ (gck->id & gck->layout->pid_mask));
+ pmc_update_bits(gck->base, gck->layout->offset,
+ gck->layout->cmd | AT91_PMC_PCR_GCKEN,
+ gck->layout->cmd);
+
+ return 0;
+}
+
+static int clk_gck_set_parent(struct clk *clk, struct clk *parent)
+{
+ struct clk_gck *gck = to_clk_gck(clk);
+ int index;
+
+ index = at91_clk_mux_val_to_index(gck->clk_mux_table, gck->num_parents,
+ parent->id);
+ if (index < 0)
+ return index;
+
+ index = at91_clk_mux_index_to_val(gck->mux_table, gck->num_parents,
+ index);
+ if (index < 0)
+ return index;
+
+ pmc_write(gck->base, gck->layout->offset,
+ (gck->id & gck->layout->pid_mask));
+ pmc_update_bits(gck->base, gck->layout->offset,
+ gck->layout->gckcss_mask | gck->layout->cmd,
+ (index << (ffs(gck->layout->gckcss_mask) - 1)) |
+ gck->layout->cmd);
+
+ return 0;
+}
+
+static ulong clk_gck_set_rate(struct clk *clk, ulong rate)
+{
+ struct clk_gck *gck = to_clk_gck(clk);
+ ulong parent_rate = clk_get_parent_rate(clk);
+ u32 div;
+
+ if (!rate || !parent_rate)
+ return 0;
+
+ if (gck->range.max && rate > gck->range.max)
+ return 0;
+
+ div = DIV_ROUND_CLOSEST(parent_rate, rate);
+ if (div > GENERATED_MAX_DIV + 1 || !div)
+ return 0;
+
+ pmc_write(gck->base, gck->layout->offset,
+ (gck->id & gck->layout->pid_mask));
+ pmc_update_bits(gck->base, gck->layout->offset,
+ AT91_PMC_PCR_GCKDIV_MASK | gck->layout->cmd,
+ ((div - 1) << (ffs(AT91_PMC_PCR_GCKDIV_MASK) - 1)) |
+ gck->layout->cmd);
+
+ return parent_rate / div;
+}
+
+static ulong clk_gck_get_rate(struct clk *clk)
+{
+ struct clk_gck *gck = to_clk_gck(clk);
+ ulong parent_rate = clk_get_parent_rate(clk);
+ u32 val, div;
+
+ if (!parent_rate)
+ return 0;
+
+ pmc_write(gck->base, gck->layout->offset,
+ (gck->id & gck->layout->pid_mask));
+ pmc_read(gck->base, gck->layout->offset, &val);
+
+ div = (val & AT91_PMC_PCR_GCKDIV_MASK) >>
+ (ffs(AT91_PMC_PCR_GCKDIV_MASK) - 1);
+
+ return parent_rate / (div + 1);
+}
+
+static const struct clk_ops gck_ops = {
+ .enable = clk_gck_enable,
+ .disable = clk_gck_disable,
+ .set_parent = clk_gck_set_parent,
+ .set_rate = clk_gck_set_rate,
+ .get_rate = clk_gck_get_rate,
+};
+
+struct clk *
+at91_clk_register_generic(void __iomem *base,
+ const struct clk_pcr_layout *layout,
+ const char *name, const char * const *parent_names,
+ const u32 *clk_mux_table, const u32 *mux_table,
+ u8 num_parents, u8 id,
+ const struct clk_range *range)
+{
+ struct clk_gck *gck;
+ struct clk *clk;
+ int ret, index;
+ u32 val;
+
+ if (!base || !layout || !name || !parent_names || !num_parents ||
+ !clk_mux_table || !mux_table || !range)
+ return ERR_PTR(-EINVAL);
+
+ gck = kzalloc(sizeof(*gck), GFP_KERNEL);
+ if (!gck)
+ return ERR_PTR(-ENOMEM);
+
+ gck->id = id;
+ gck->base = base;
+ gck->range = *range;
+ gck->layout = layout;
+ gck->clk_mux_table = clk_mux_table;
+ gck->mux_table = mux_table;
+ gck->num_parents = num_parents;
+
+ clk = &gck->clk;
+ clk->flags = CLK_GET_RATE_NOCACHE;
+
+ pmc_write(gck->base, gck->layout->offset,
+ (gck->id & gck->layout->pid_mask));
+ pmc_read(gck->base, gck->layout->offset, &val);
+
+ val = (val & gck->layout->gckcss_mask) >>
+ (ffs(gck->layout->gckcss_mask) - 1);
+
+ index = at91_clk_mux_val_to_index(gck->mux_table, gck->num_parents,
+ val);
+ if (index < 0) {
+ kfree(gck);
+ return ERR_PTR(index);
+ }
+
+ ret = clk_register(clk, UBOOT_DM_CLK_AT91_GCK, name,
+ parent_names[index]);
+ if (ret) {
+ kfree(gck);
+ clk = ERR_PTR(ret);
+ }
+
+ return clk;
+}
+
+U_BOOT_DRIVER(at91_gck_clk) = {
+ .name = UBOOT_DM_CLK_AT91_GCK,
+ .id = UCLASS_CLK,
+ .ops = &gck_ops,
+ .flags = DM_FLAG_PRE_RELOC,
+};
diff --git a/drivers/clk/at91/clk-h32mx.c b/drivers/clk/at91/clk-h32mx.c
deleted file mode 100644
index 86bb71f612..0000000000
--- a/drivers/clk/at91/clk-h32mx.c
+++ /dev/null
@@ -1,56 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2016 Atmel Corporation
- * Wenyou.Yang <wenyou.yang@atmel.com>
- */
-
-#include <common.h>
-#include <clk-uclass.h>
-#include <dm.h>
-#include <dm/device_compat.h>
-#include <dm/util.h>
-#include <linux/io.h>
-#include <mach/at91_pmc.h>
-#include "pmc.h"
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#define H32MX_MAX_FREQ 90000000
-
-static ulong sama5d4_h32mx_clk_get_rate(struct clk *clk)
-{
- struct pmc_platdata *plat = dev_get_platdata(clk->dev);
- struct at91_pmc *pmc = plat->reg_base;
- ulong rate = gd->arch.mck_rate_hz;
-
- if (readl(&pmc->mckr) & AT91_PMC_MCKR_H32MXDIV)
- rate /= 2;
-
- if (rate > H32MX_MAX_FREQ)
- dev_dbg(clk->dev, "H32MX clock is too fast\n");
-
- return rate;
-}
-
-static struct clk_ops sama5d4_h32mx_clk_ops = {
- .get_rate = sama5d4_h32mx_clk_get_rate,
-};
-
-static int sama5d4_h32mx_clk_probe(struct udevice *dev)
-{
- return at91_pmc_core_probe(dev);
-}
-
-static const struct udevice_id sama5d4_h32mx_clk_match[] = {
- { .compatible = "atmel,sama5d4-clk-h32mx" },
- {}
-};
-
-U_BOOT_DRIVER(sama5d4_h32mx_clk) = {
- .name = "sama5d4-h32mx-clk",
- .id = UCLASS_CLK,
- .of_match = sama5d4_h32mx_clk_match,
- .probe = sama5d4_h32mx_clk_probe,
- .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
- .ops = &sama5d4_h32mx_clk_ops,
-};
diff --git a/drivers/clk/at91/clk-main.c b/drivers/clk/at91/clk-main.c
index b31a1cb682..b52d926f33 100644
--- a/drivers/clk/at91/clk-main.c
+++ b/drivers/clk/at91/clk-main.c
@@ -1,54 +1,387 @@
// SPDX-License-Identifier: GPL-2.0+
/*
- * Copyright (C) 2016 Atmel Corporation
- * Wenyou.Yang <wenyou.yang@atmel.com>
+ * Main clock support for AT91 architectures.
+ *
+ * Copyright (C) 2020 Microchip Technology Inc. and its subsidiaries
+ *
+ * Author: Claudiu Beznea <claudiu.beznea@microchip.com>
+ *
+ * Based on drivers/clk/at91/clk-main.c from Linux.
*/
+#include <asm/processor.h>
#include <common.h>
#include <clk-uclass.h>
#include <dm.h>
+#include <linux/clk-provider.h>
+#include <linux/clk/at91_pmc.h>
+#include <linux/delay.h>
#include <linux/io.h>
-#include <mach/at91_pmc.h>
#include "pmc.h"
-DECLARE_GLOBAL_DATA_PTR;
+#define UBOOT_DM_CLK_AT91_MAIN_RC "at91-main-rc-clk"
+#define UBOOT_DM_CLK_AT91_MAIN_OSC "at91-main-osc-clk"
+#define UBOOT_DM_CLK_AT91_RM9200_MAIN "at91-rm9200-main-clk"
+#define UBOOT_DM_CLK_AT91_SAM9X5_MAIN "at91-sam9x5-main-clk"
-static int main_osc_clk_enable(struct clk *clk)
+#define MOR_KEY_MASK GENMASK(23, 16)
+#define USEC_PER_SEC 1000000UL
+#define SLOW_CLOCK_FREQ 32768
+
+#define clk_main_parent_select(s) (((s) & \
+ (AT91_PMC_MOSCEN | \
+ AT91_PMC_OSCBYPASS)) ? 1 : 0)
+
+struct clk_main_rc {
+ void __iomem *reg;
+ struct clk clk;
+};
+
+#define to_clk_main_rc(_clk) container_of(_clk, struct clk_main_rc, clk)
+
+struct clk_main_osc {
+ void __iomem *reg;
+ struct clk clk;
+};
+
+#define to_clk_main_osc(_clk) container_of(_clk, struct clk_main_osc, clk)
+
+struct clk_main {
+ void __iomem *reg;
+ const unsigned int *clk_mux_table;
+ const char * const *parent_names;
+ unsigned int num_parents;
+ int type;
+ struct clk clk;
+};
+
+#define to_clk_main(_clk) container_of(_clk, struct clk_main, clk)
+
+static int main_rc_enable(struct clk *clk)
+{
+ struct clk_main_rc *main_rc = to_clk_main_rc(clk);
+ void __iomem *reg = main_rc->reg;
+ unsigned int val;
+
+ pmc_read(reg, AT91_CKGR_MOR, &val);
+
+ if (!(val & AT91_PMC_MOSCRCEN)) {
+ pmc_update_bits(reg, AT91_CKGR_MOR,
+ MOR_KEY_MASK | AT91_PMC_MOSCRCEN,
+ AT91_PMC_KEY | AT91_PMC_MOSCRCEN);
+ }
+
+ pmc_read(reg, AT91_PMC_SR, &val);
+ while (!(val & AT91_PMC_MOSCRCS)) {
+ pmc_read(reg, AT91_PMC_SR, &val);
+ debug("waiting for main rc...\n");
+ cpu_relax();
+ }
+
+ return 0;
+}
+
+static int main_rc_disable(struct clk *clk)
{
- struct pmc_platdata *plat = dev_get_platdata(clk->dev);
- struct at91_pmc *pmc = plat->reg_base;
+ struct clk_main_rc *main_rc = to_clk_main_rc(clk);
+ struct reg *reg = main_rc->reg;
+ unsigned int val;
+
+ pmc_read(reg, AT91_CKGR_MOR, &val);
- if (readl(&pmc->sr) & AT91_PMC_MOSCSELS)
+ if (!(val & AT91_PMC_MOSCRCEN))
return 0;
- return -EINVAL;
+ pmc_update_bits(reg, AT91_CKGR_MOR, MOR_KEY_MASK | AT91_PMC_MOSCRCEN,
+ AT91_PMC_KEY);
+
+ return 0;
}
-static ulong main_osc_clk_get_rate(struct clk *clk)
+static const struct clk_ops main_rc_clk_ops = {
+ .enable = main_rc_enable,
+ .disable = main_rc_disable,
+ .get_rate = clk_generic_get_rate,
+};
+
+struct clk *at91_clk_main_rc(void __iomem *reg, const char *name,
+ const char *parent_name)
{
- return gd->arch.main_clk_rate_hz;
+ struct clk_main_rc *main_rc;
+ struct clk *clk;
+ int ret;
+
+ if (!reg || !name || !parent_name)
+ return ERR_PTR(-EINVAL);
+
+ main_rc = kzalloc(sizeof(*main_rc), GFP_KERNEL);
+ if (!main_rc)
+ return ERR_PTR(-ENOMEM);
+
+ main_rc->reg = reg;
+ clk = &main_rc->clk;
+
+ ret = clk_register(clk, UBOOT_DM_CLK_AT91_MAIN_RC, name,
+ parent_name);
+ if (ret) {
+ kfree(main_rc);
+ clk = ERR_PTR(ret);
+ }
+
+ return clk;
}
-static struct clk_ops main_osc_clk_ops = {
- .enable = main_osc_clk_enable,
- .get_rate = main_osc_clk_get_rate,
+U_BOOT_DRIVER(at91_main_rc_clk) = {
+ .name = UBOOT_DM_CLK_AT91_MAIN_RC,
+ .id = UCLASS_CLK,
+ .ops = &main_rc_clk_ops,
+ .flags = DM_FLAG_PRE_RELOC,
};
-static int main_osc_clk_probe(struct udevice *dev)
+static int clk_main_osc_enable(struct clk *clk)
{
- return at91_pmc_core_probe(dev);
+ struct clk_main_osc *main = to_clk_main_osc(clk);
+ void __iomem *reg = main->reg;
+ unsigned int val;
+
+ pmc_read(reg, AT91_CKGR_MOR, &val);
+ val &= ~MOR_KEY_MASK;
+
+ if (val & AT91_PMC_OSCBYPASS)
+ return 0;
+
+ if (!(val & AT91_PMC_MOSCEN)) {
+ val |= AT91_PMC_MOSCEN | AT91_PMC_KEY;
+ pmc_write(reg, AT91_CKGR_MOR, val);
+ }
+
+ pmc_read(reg, AT91_PMC_SR, &val);
+ while (!(val & AT91_PMC_MOSCS)) {
+ pmc_read(reg, AT91_PMC_SR, &val);
+ debug("waiting for main osc..\n");
+ cpu_relax();
+ }
+
+ return 0;
+}
+
+static int clk_main_osc_disable(struct clk *clk)
+{
+ struct clk_main_osc *main = to_clk_main_osc(clk);
+ void __iomem *reg = main->reg;
+ unsigned int val;
+
+ pmc_read(reg, AT91_CKGR_MOR, &val);
+ if (val & AT91_PMC_OSCBYPASS)
+ return 0;
+
+ if (!(val & AT91_PMC_MOSCEN))
+ return 0;
+
+ val &= ~(AT91_PMC_KEY | AT91_PMC_MOSCEN);
+ pmc_write(reg, AT91_CKGR_MOR, val | AT91_PMC_KEY);
+
+ return 0;
}
-static const struct udevice_id main_osc_clk_match[] = {
- { .compatible = "atmel,at91sam9x5-clk-main" },
- {}
+static const struct clk_ops main_osc_clk_ops = {
+ .enable = clk_main_osc_enable,
+ .disable = clk_main_osc_disable,
+ .get_rate = clk_generic_get_rate,
};
-U_BOOT_DRIVER(at91sam9x5_main_osc_clk) = {
- .name = "at91sam9x5-main-osc-clk",
+struct clk *at91_clk_main_osc(void __iomem *reg, const char *name,
+ const char *parent_name, bool bypass)
+{
+ struct clk_main_osc *main;
+ struct clk *clk;
+ int ret;
+
+ if (!reg || !name || !parent_name)
+ return ERR_PTR(-EINVAL);
+
+ main = kzalloc(sizeof(*main), GFP_KERNEL);
+ if (!main)
+ return ERR_PTR(-ENOMEM);
+
+ main->reg = reg;
+ clk = &main->clk;
+
+ if (bypass) {
+ pmc_update_bits(reg, AT91_CKGR_MOR,
+ MOR_KEY_MASK | AT91_PMC_OSCBYPASS,
+ AT91_PMC_KEY | AT91_PMC_OSCBYPASS);
+ }
+
+ ret = clk_register(clk, UBOOT_DM_CLK_AT91_MAIN_OSC, name, parent_name);
+ if (ret) {
+ kfree(main);
+ clk = ERR_PTR(ret);
+ }
+
+ return clk;
+}
+
+U_BOOT_DRIVER(at91_main_osc_clk) = {
+ .name = UBOOT_DM_CLK_AT91_MAIN_OSC,
.id = UCLASS_CLK,
- .of_match = main_osc_clk_match,
- .probe = main_osc_clk_probe,
- .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
.ops = &main_osc_clk_ops,
+ .flags = DM_FLAG_PRE_RELOC,
+};
+
+static int clk_main_probe_frequency(void __iomem *reg)
+{
+ unsigned int cycles = 16;
+ unsigned int cycle = DIV_ROUND_UP(USEC_PER_SEC, SLOW_CLOCK_FREQ);
+ unsigned int mcfr;
+
+ while (cycles--) {
+ pmc_read(reg, AT91_CKGR_MCFR, &mcfr);
+ if (mcfr & AT91_PMC_MAINRDY)
+ return 0;
+ udelay(cycle);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int clk_rm9200_main_enable(struct clk *clk)
+{
+ struct clk_main *main = to_clk_main(clk);
+
+ return clk_main_probe_frequency(main->reg);
+}
+
+static const struct clk_ops rm9200_main_clk_ops = {
+ .enable = clk_rm9200_main_enable,
+};
+
+struct clk *at91_clk_rm9200_main(void __iomem *reg, const char *name,
+ const char *parent_name)
+{
+ struct clk_main *main;
+ struct clk *clk;
+ int ret;
+
+ if (!reg || !name || !parent_name)
+ return ERR_PTR(-EINVAL);
+
+ main = kzalloc(sizeof(*main), GFP_KERNEL);
+ if (!main)
+ return ERR_PTR(-ENOMEM);
+
+ main->reg = reg;
+ clk = &main->clk;
+
+ ret = clk_register(clk, UBOOT_DM_CLK_AT91_RM9200_MAIN, name,
+ parent_name);
+ if (ret) {
+ kfree(main);
+ clk = ERR_PTR(ret);
+ }
+
+ return clk;
+}
+
+U_BOOT_DRIVER(at91_rm9200_main_clk) = {
+ .name = UBOOT_DM_CLK_AT91_RM9200_MAIN,
+ .id = UCLASS_CLK,
+ .ops = &rm9200_main_clk_ops,
+ .flags = DM_FLAG_PRE_RELOC,
+};
+
+static inline bool clk_sam9x5_main_ready(void __iomem *reg)
+{
+ unsigned int val;
+
+ pmc_read(reg, AT91_PMC_SR, &val);
+
+ return !!(val & AT91_PMC_MOSCSELS);
+}
+
+static int clk_sam9x5_main_enable(struct clk *clk)
+{
+ struct clk_main *main = to_clk_main(clk);
+ void __iomem *reg = main->reg;
+
+ while (!clk_sam9x5_main_ready(reg)) {
+ debug("waiting for main...");
+ cpu_relax();
+ }
+
+ return clk_main_probe_frequency(reg);
+}
+
+static int clk_sam9x5_main_set_parent(struct clk *clk, struct clk *parent)
+{
+ struct clk_main *main = to_clk_main(clk);
+ void __iomem *reg = main->reg;
+ unsigned int tmp, index;
+
+ index = at91_clk_mux_val_to_index(main->clk_mux_table,
+ main->num_parents, AT91_CLK_ID_TO_DID(parent->id));
+ if (index < 0)
+ return index;
+
+ pmc_read(reg, AT91_CKGR_MOR, &tmp);
+ tmp &= ~MOR_KEY_MASK;
+ tmp |= AT91_PMC_KEY;
+
+ if (index && !(tmp & AT91_PMC_MOSCSEL))
+ pmc_write(reg, AT91_CKGR_MOR, tmp | AT91_PMC_MOSCSEL);
+ else if (!index && (tmp & AT91_PMC_MOSCSEL))
+ pmc_write(reg, AT91_CKGR_MOR, tmp & ~AT91_PMC_MOSCSEL);
+
+ while (!clk_sam9x5_main_ready(reg))
+ cpu_relax();
+
+ return 0;
+}
+
+static const struct clk_ops sam9x5_main_clk_ops = {
+ .enable = clk_sam9x5_main_enable,
+ .set_parent = clk_sam9x5_main_set_parent,
+ .get_rate = clk_generic_get_rate,
+};
+
+struct clk *at91_clk_sam9x5_main(void __iomem *reg, const char *name,
+ const char * const *parent_names,
+ int num_parents, const u32 *clk_mux_table,
+ int type)
+{
+ struct clk *clk = ERR_PTR(-ENOMEM);
+ struct clk_main *main = NULL;
+ unsigned int val;
+ int ret;
+
+ if (!reg || !name || !parent_names || !num_parents || !clk_mux_table)
+ return ERR_PTR(-EINVAL);
+
+ main = kzalloc(sizeof(*main), GFP_KERNEL);
+ if (!main)
+ return ERR_PTR(-ENOMEM);
+
+ main->reg = reg;
+ main->parent_names = parent_names;
+ main->num_parents = num_parents;
+ main->clk_mux_table = clk_mux_table;
+ main->type = type;
+ clk = &main->clk;
+ clk->flags = CLK_GET_RATE_NOCACHE;
+ pmc_read(reg, AT91_CKGR_MOR, &val);
+ ret = clk_register(clk, UBOOT_DM_CLK_AT91_SAM9X5_MAIN, name,
+ main->parent_names[clk_main_parent_select(val)]);
+ if (ret) {
+ kfree(main);
+ clk = ERR_PTR(ret);
+ }
+
+ return clk;
+}
+
+U_BOOT_DRIVER(at91_sam9x5_main_clk) = {
+ .name = UBOOT_DM_CLK_AT91_SAM9X5_MAIN,
+ .id = UCLASS_CLK,
+ .ops = &sam9x5_main_clk_ops,
+ .flags = DM_FLAG_PRE_RELOC,
};
diff --git a/drivers/clk/at91/clk-master.c b/drivers/clk/at91/clk-master.c
index e078fab7b4..759df93697 100644
--- a/drivers/clk/at91/clk-master.c
+++ b/drivers/clk/at91/clk-master.c
@@ -1,33 +1,332 @@
// SPDX-License-Identifier: GPL-2.0+
/*
- * Copyright (C) 2016 Atmel Corporation
- * Wenyou.Yang <wenyou.yang@atmel.com>
+ * Master clock support for AT91 architectures.
+ *
+ * Copyright (C) 2020 Microchip Technology Inc. and its subsidiaries
+ *
+ * Author: Claudiu Beznea <claudiu.beznea@microchip.com>
+ *
+ * Based on drivers/clk/at91/clk-master.c from Linux.
*/
-#include <common.h>
+#include <asm/processor.h>
#include <clk-uclass.h>
+#include <common.h>
#include <dm.h>
+#include <linux/clk-provider.h>
+#include <linux/clk/at91_pmc.h>
+
+#include "pmc.h"
+
+#define UBOOT_DM_CLK_AT91_MASTER "at91-master-clk"
+#define UBOOT_DM_CLK_AT91_SAMA7G5_MASTER "at91-sama7g5-master-clk"
+
+#define MASTER_PRES_MASK 0x7
+#define MASTER_PRES_MAX MASTER_PRES_MASK
+#define MASTER_DIV_SHIFT 8
+#define MASTER_DIV_MASK 0x3
+
+#define PMC_MCR 0x30
+#define PMC_MCR_ID_MSK GENMASK(3, 0)
+#define PMC_MCR_CMD BIT(7)
+#define PMC_MCR_DIV GENMASK(10, 8)
+#define PMC_MCR_CSS GENMASK(20, 16)
+#define PMC_MCR_CSS_SHIFT (16)
+#define PMC_MCR_EN BIT(28)
+
+#define PMC_MCR_ID(x) ((x) & PMC_MCR_ID_MSK)
+
+#define MASTER_MAX_ID 4
+
+struct clk_master {
+ void __iomem *base;
+ const struct clk_master_layout *layout;
+ const struct clk_master_characteristics *characteristics;
+ const u32 *mux_table;
+ const u32 *clk_mux_table;
+ u32 num_parents;
+ struct clk clk;
+ u8 id;
+};
+
+#define to_clk_master(_clk) container_of(_clk, struct clk_master, clk)
+
+static inline bool clk_master_ready(struct clk_master *master)
+{
+ unsigned int bit = master->id ? AT91_PMC_MCKXRDY : AT91_PMC_MCKRDY;
+ unsigned int status;
+
+ pmc_read(master->base, AT91_PMC_SR, &status);
+
+ return !!(status & bit);
+}
+
+static int clk_master_enable(struct clk *clk)
+{
+ struct clk_master *master = to_clk_master(clk);
+
+ while (!clk_master_ready(master)) {
+ debug("waiting for mck %d\n", master->id);
+ cpu_relax();
+ }
+
+ return 0;
+}
-DECLARE_GLOBAL_DATA_PTR;
+static ulong clk_master_get_rate(struct clk *clk)
+{
+ struct clk_master *master = to_clk_master(clk);
+ const struct clk_master_layout *layout = master->layout;
+ const struct clk_master_characteristics *characteristics =
+ master->characteristics;
+ ulong rate = clk_get_parent_rate(clk);
+ unsigned int mckr;
+ u8 pres, div;
+
+ if (!rate)
+ return 0;
+
+ pmc_read(master->base, master->layout->offset, &mckr);
+ mckr &= layout->mask;
+
+ pres = (mckr >> layout->pres_shift) & MASTER_PRES_MASK;
+ div = (mckr >> MASTER_DIV_SHIFT) & MASTER_DIV_MASK;
+
+ if (characteristics->have_div3_pres && pres == MASTER_PRES_MAX)
+ rate /= 3;
+ else
+ rate >>= pres;
+
+ rate /= characteristics->divisors[div];
+
+ if (rate < characteristics->output.min)
+ pr_warn("master clk is underclocked");
+ else if (rate > characteristics->output.max)
+ pr_warn("master clk is overclocked");
+
+ return rate;
+}
+
+static const struct clk_ops master_ops = {
+ .enable = clk_master_enable,
+ .get_rate = clk_master_get_rate,
+};
-static ulong at91_master_clk_get_rate(struct clk *clk)
+struct clk *at91_clk_register_master(void __iomem *base,
+ const char *name, const char * const *parent_names,
+ int num_parents, const struct clk_master_layout *layout,
+ const struct clk_master_characteristics *characteristics,
+ const u32 *mux_table)
{
- return gd->arch.mck_rate_hz;
+ struct clk_master *master;
+ struct clk *clk;
+ unsigned int val;
+ int ret;
+
+ if (!base || !name || !num_parents || !parent_names ||
+ !layout || !characteristics || !mux_table)
+ return ERR_PTR(-EINVAL);
+
+ master = kzalloc(sizeof(*master), GFP_KERNEL);
+ if (!master)
+ return ERR_PTR(-ENOMEM);
+
+ master->layout = layout;
+ master->characteristics = characteristics;
+ master->base = base;
+ master->num_parents = num_parents;
+ master->mux_table = mux_table;
+
+ pmc_read(master->base, master->layout->offset, &val);
+ clk = &master->clk;
+ clk->flags = CLK_GET_RATE_NOCACHE | CLK_IS_CRITICAL;
+ ret = clk_register(clk, UBOOT_DM_CLK_AT91_MASTER, name,
+ parent_names[val & AT91_PMC_CSS]);
+ if (ret) {
+ kfree(master);
+ clk = ERR_PTR(ret);
+ }
+
+ return clk;
}
-static struct clk_ops at91_master_clk_ops = {
- .get_rate = at91_master_clk_get_rate,
+U_BOOT_DRIVER(at91_master_clk) = {
+ .name = UBOOT_DM_CLK_AT91_MASTER,
+ .id = UCLASS_CLK,
+ .ops = &master_ops,
+ .flags = DM_FLAG_PRE_RELOC,
};
-static const struct udevice_id at91_master_clk_match[] = {
- { .compatible = "atmel,at91rm9200-clk-master" },
- { .compatible = "atmel,at91sam9x5-clk-master" },
- {}
+static int clk_sama7g5_master_set_parent(struct clk *clk, struct clk *parent)
+{
+ struct clk_master *master = to_clk_master(clk);
+ int index;
+
+ index = at91_clk_mux_val_to_index(master->clk_mux_table,
+ master->num_parents, parent->id);
+ if (index < 0)
+ return index;
+
+ index = at91_clk_mux_index_to_val(master->mux_table,
+ master->num_parents, index);
+ if (index < 0)
+ return index;
+
+ pmc_write(master->base, PMC_MCR, PMC_MCR_ID(master->id));
+ pmc_update_bits(master->base, PMC_MCR,
+ PMC_MCR_CSS | PMC_MCR_CMD | PMC_MCR_ID_MSK,
+ (index << PMC_MCR_CSS_SHIFT) | PMC_MCR_CMD |
+ PMC_MCR_ID(master->id));
+ return 0;
+}
+
+static int clk_sama7g5_master_enable(struct clk *clk)
+{
+ struct clk_master *master = to_clk_master(clk);
+
+ pmc_write(master->base, PMC_MCR, PMC_MCR_ID(master->id));
+ pmc_update_bits(master->base, PMC_MCR,
+ PMC_MCR_EN | PMC_MCR_CMD | PMC_MCR_ID_MSK,
+ PMC_MCR_EN | PMC_MCR_CMD | PMC_MCR_ID(master->id));
+
+ return 0;
+}
+
+static int clk_sama7g5_master_disable(struct clk *clk)
+{
+ struct clk_master *master = to_clk_master(clk);
+
+ pmc_write(master->base, PMC_MCR, master->id);
+ pmc_update_bits(master->base, PMC_MCR,
+ PMC_MCR_EN | PMC_MCR_CMD | PMC_MCR_ID_MSK,
+ PMC_MCR_CMD | PMC_MCR_ID(master->id));
+
+ return 0;
+}
+
+static ulong clk_sama7g5_master_set_rate(struct clk *clk, ulong rate)
+{
+ struct clk_master *master = to_clk_master(clk);
+ ulong parent_rate = clk_get_parent_rate(clk);
+ ulong div, rrate;
+
+ if (!parent_rate)
+ return 0;
+
+ div = DIV_ROUND_CLOSEST(parent_rate, rate);
+ if ((div > (1 << (MASTER_PRES_MAX - 1))) || (div & (div - 1))) {
+ return 0;
+ } else if (div == 3) {
+ rrate = DIV_ROUND_CLOSEST(parent_rate, MASTER_PRES_MAX);
+ div = MASTER_PRES_MAX;
+ } else {
+ rrate = DIV_ROUND_CLOSEST(parent_rate, div);
+ div = ffs(div) - 1;
+ }
+
+ pmc_write(master->base, PMC_MCR, master->id);
+ pmc_update_bits(master->base, PMC_MCR,
+ PMC_MCR_DIV | PMC_MCR_CMD | PMC_MCR_ID_MSK,
+ (div << MASTER_DIV_SHIFT) | PMC_MCR_CMD |
+ PMC_MCR_ID(master->id));
+
+ return rrate;
+}
+
+static ulong clk_sama7g5_master_get_rate(struct clk *clk)
+{
+ struct clk_master *master = to_clk_master(clk);
+ ulong parent_rate = clk_get_parent_rate(clk);
+ unsigned int val;
+ ulong div;
+
+ if (!parent_rate)
+ return 0;
+
+ pmc_write(master->base, PMC_MCR, master->id);
+ pmc_read(master->base, PMC_MCR, &val);
+
+ div = (val >> MASTER_DIV_SHIFT) & MASTER_DIV_MASK;
+
+ if (div == MASTER_PRES_MAX)
+ div = 3;
+ else
+ div = 1 << div;
+
+ return DIV_ROUND_CLOSEST(parent_rate, div);
+}
+
+static const struct clk_ops sama7g5_master_ops = {
+ .enable = clk_sama7g5_master_enable,
+ .disable = clk_sama7g5_master_disable,
+ .set_rate = clk_sama7g5_master_set_rate,
+ .get_rate = clk_sama7g5_master_get_rate,
+ .set_parent = clk_sama7g5_master_set_parent,
};
-U_BOOT_DRIVER(atmel_at91rm9200_clk_master) = {
- .name = "atmel_at91rm9200_clk_master",
+struct clk *at91_clk_sama7g5_register_master(void __iomem *base,
+ const char *name, const char * const *parent_names,
+ int num_parents, const u32 *mux_table, const u32 *clk_mux_table,
+ bool critical, u8 id)
+{
+ struct clk_master *master;
+ struct clk *clk;
+ u32 val, index;
+ int ret;
+
+ if (!base || !name || !num_parents || !parent_names ||
+ !mux_table || !clk_mux_table || id > MASTER_MAX_ID)
+ return ERR_PTR(-EINVAL);
+
+ master = kzalloc(sizeof(*master), GFP_KERNEL);
+ if (!master)
+ return ERR_PTR(-ENOMEM);
+
+ master->base = base;
+ master->id = id;
+ master->mux_table = mux_table;
+ master->clk_mux_table = clk_mux_table;
+ master->num_parents = num_parents;
+
+ pmc_write(master->base, PMC_MCR, master->id);
+ pmc_read(master->base, PMC_MCR, &val);
+
+ index = at91_clk_mux_val_to_index(master->mux_table,
+ master->num_parents,
+ (val & PMC_MCR_CSS) >> PMC_MCR_CSS_SHIFT);
+ if (index < 0) {
+ kfree(master);
+ return ERR_PTR(index);
+ }
+
+ clk = &master->clk;
+ clk->flags = CLK_GET_RATE_NOCACHE | (critical ? CLK_IS_CRITICAL : 0);
+
+ ret = clk_register(clk, UBOOT_DM_CLK_AT91_SAMA7G5_MASTER, name,
+ parent_names[index]);
+ if (ret) {
+ kfree(master);
+ clk = ERR_PTR(ret);
+ }
+
+ return clk;
+}
+
+U_BOOT_DRIVER(at91_sama7g5_master_clk) = {
+ .name = UBOOT_DM_CLK_AT91_SAMA7G5_MASTER,
.id = UCLASS_CLK,
- .of_match = at91_master_clk_match,
- .ops = &at91_master_clk_ops,
+ .ops = &sama7g5_master_ops,
+ .flags = DM_FLAG_PRE_RELOC,
+};
+
+const struct clk_master_layout at91rm9200_master_layout = {
+ .mask = 0x31F,
+ .pres_shift = 2,
+ .offset = AT91_PMC_MCKR,
+};
+
+const struct clk_master_layout at91sam9x5_master_layout = {
+ .mask = 0x373,
+ .pres_shift = 4,
+ .offset = AT91_PMC_MCKR,
};
diff --git a/drivers/clk/at91/clk-peripheral.c b/drivers/clk/at91/clk-peripheral.c
index cd9d5e77c0..52cbc520ce 100644
--- a/drivers/clk/at91/clk-peripheral.c
+++ b/drivers/clk/at91/clk-peripheral.c
@@ -1,113 +1,254 @@
// SPDX-License-Identifier: GPL-2.0+
/*
- * Copyright (C) 2016 Atmel Corporation
- * Wenyou.Yang <wenyou.yang@atmel.com>
+ * Peripheral clock support for AT91 architectures.
+ *
+ * Copyright (C) 2020 Microchip Technology Inc. and its subsidiaries
+ *
+ * Author: Claudiu Beznea <claudiu.beznea@microchip.com>
+ *
+ * Based on drivers/clk/at91/clk-peripheral.c from Linux.
*/
-
#include <common.h>
#include <clk-uclass.h>
#include <dm.h>
-#include <malloc.h>
#include <linux/io.h>
-#include <mach/at91_pmc.h>
+#include <linux/clk-provider.h>
+#include <linux/clk/at91_pmc.h>
+
#include "pmc.h"
+#define UBOOT_DM_CLK_AT91_PERIPH "at91-periph-clk"
+#define UBOOT_DM_CLK_AT91_SAM9X5_PERIPH "at91-sam9x5-periph-clk"
+
#define PERIPHERAL_ID_MIN 2
#define PERIPHERAL_ID_MAX 31
#define PERIPHERAL_MASK(id) (1 << ((id) & PERIPHERAL_ID_MAX))
-enum periph_clk_type {
- CLK_PERIPH_AT91RM9200 = 0,
- CLK_PERIPH_AT91SAM9X5,
+#define PERIPHERAL_MAX_SHIFT 3
+
+struct clk_peripheral {
+ void __iomem *base;
+ struct clk clk;
+ u32 id;
};
-/**
- * sam9x5_periph_clk_bind() - for the periph clock driver
- * Recursively bind its children as clk devices.
- *
- * @return: 0 on success, or negative error code on failure
- */
-static int sam9x5_periph_clk_bind(struct udevice *dev)
+
+#define to_clk_peripheral(_c) container_of(_c, struct clk_peripheral, clk)
+
+struct clk_sam9x5_peripheral {
+ const struct clk_pcr_layout *layout;
+ void __iomem *base;
+ struct clk clk;
+ struct clk_range range;
+ u32 id;
+ u32 div;
+ bool auto_div;
+};
+
+#define to_clk_sam9x5_peripheral(_c) \
+ container_of(_c, struct clk_sam9x5_peripheral, clk)
+
+static int clk_peripheral_enable(struct clk *clk)
{
- return at91_clk_sub_device_bind(dev, "periph-clk");
+ struct clk_peripheral *periph = to_clk_peripheral(clk);
+ int offset = AT91_PMC_PCER;
+ u32 id = periph->id;
+
+ if (id < PERIPHERAL_ID_MIN)
+ return 0;
+ if (id > PERIPHERAL_ID_MAX)
+ offset = AT91_PMC_PCER1;
+ pmc_write(periph->base, offset, PERIPHERAL_MASK(id));
+
+ return 0;
+}
+
+static int clk_peripheral_disable(struct clk *clk)
+{
+ struct clk_peripheral *periph = to_clk_peripheral(clk);
+ int offset = AT91_PMC_PCDR;
+ u32 id = periph->id;
+
+ if (id < PERIPHERAL_ID_MIN)
+ return -EINVAL;
+
+ if (id > PERIPHERAL_ID_MAX)
+ offset = AT91_PMC_PCDR1;
+ pmc_write(periph->base, offset, PERIPHERAL_MASK(id));
+
+ return 0;
}
-static const struct udevice_id sam9x5_periph_clk_match[] = {
- {
- .compatible = "atmel,at91rm9200-clk-peripheral",
- .data = CLK_PERIPH_AT91RM9200,
- },
- {
- .compatible = "atmel,at91sam9x5-clk-peripheral",
- .data = CLK_PERIPH_AT91SAM9X5,
- },
- {}
+static const struct clk_ops peripheral_ops = {
+ .enable = clk_peripheral_enable,
+ .disable = clk_peripheral_disable,
+ .get_rate = clk_generic_get_rate,
};
-U_BOOT_DRIVER(atmel_at91rm9200_clk_peripheral) = {
- .name = "atmel_at91rm9200_clk_peripheral",
- .id = UCLASS_MISC,
- .of_match = sam9x5_periph_clk_match,
- .bind = sam9x5_periph_clk_bind,
+struct clk *
+at91_clk_register_peripheral(void __iomem *base, const char *name,
+ const char *parent_name, u32 id)
+{
+ struct clk_peripheral *periph;
+ struct clk *clk;
+ int ret;
+
+ if (!base || !name || !parent_name || id > PERIPHERAL_ID_MAX)
+ return ERR_PTR(-EINVAL);
+
+ periph = kzalloc(sizeof(*periph), GFP_KERNEL);
+ if (!periph)
+ return ERR_PTR(-ENOMEM);
+
+ periph->id = id;
+ periph->base = base;
+
+ clk = &periph->clk;
+ clk->flags = CLK_GET_RATE_NOCACHE;
+ ret = clk_register(clk, UBOOT_DM_CLK_AT91_PERIPH, name, parent_name);
+ if (ret) {
+ kfree(periph);
+ clk = ERR_PTR(ret);
+ }
+
+ return clk;
+}
+
+U_BOOT_DRIVER(at91_periph_clk) = {
+ .name = UBOOT_DM_CLK_AT91_PERIPH,
+ .id = UCLASS_CLK,
+ .ops = &peripheral_ops,
+ .flags = DM_FLAG_PRE_RELOC,
};
-/*---------------------------------------------------------*/
+static int clk_sam9x5_peripheral_enable(struct clk *clk)
+{
+ struct clk_sam9x5_peripheral *periph = to_clk_sam9x5_peripheral(clk);
+
+ if (periph->id < PERIPHERAL_ID_MIN)
+ return 0;
+
+ pmc_write(periph->base, periph->layout->offset,
+ (periph->id & periph->layout->pid_mask));
+ pmc_update_bits(periph->base, periph->layout->offset,
+ periph->layout->cmd | AT91_PMC_PCR_EN,
+ periph->layout->cmd | AT91_PMC_PCR_EN);
-static int periph_clk_enable(struct clk *clk)
+ return 0;
+}
+
+static int clk_sam9x5_peripheral_disable(struct clk *clk)
{
- struct pmc_platdata *plat = dev_get_platdata(clk->dev);
- struct at91_pmc *pmc = plat->reg_base;
- enum periph_clk_type clk_type;
- void *addr;
-
- if (clk->id < PERIPHERAL_ID_MIN)
- return -1;
-
- clk_type = dev_get_driver_data(dev_get_parent(clk->dev));
- if (clk_type == CLK_PERIPH_AT91RM9200) {
- addr = &pmc->pcer;
- if (clk->id > PERIPHERAL_ID_MAX)
- addr = &pmc->pcer1;
-
- setbits_le32(addr, PERIPHERAL_MASK(clk->id));
- } else {
- writel(clk->id & AT91_PMC_PCR_PID_MASK, &pmc->pcr);
- setbits_le32(&pmc->pcr,
- AT91_PMC_PCR_CMD_WRITE | AT91_PMC_PCR_EN);
- }
+ struct clk_sam9x5_peripheral *periph = to_clk_sam9x5_peripheral(clk);
+
+ if (periph->id < PERIPHERAL_ID_MIN)
+ return -EINVAL;
+
+ pmc_write(periph->base, periph->layout->offset,
+ (periph->id & periph->layout->pid_mask));
+ pmc_update_bits(periph->base, periph->layout->offset,
+ AT91_PMC_PCR_EN | periph->layout->cmd,
+ periph->layout->cmd);
return 0;
}
-static ulong periph_get_rate(struct clk *clk)
+static ulong clk_sam9x5_peripheral_get_rate(struct clk *clk)
{
- struct udevice *dev;
- struct clk clk_dev;
- ulong clk_rate;
- int ret;
+ struct clk_sam9x5_peripheral *periph = to_clk_sam9x5_peripheral(clk);
+ ulong parent_rate = clk_get_parent_rate(clk);
+ u32 val, shift = ffs(periph->layout->div_mask) - 1;
- dev = dev_get_parent(clk->dev);
+ if (!parent_rate)
+ return 0;
- ret = clk_get_by_index(dev, 0, &clk_dev);
- if (ret)
- return ret;
+ pmc_write(periph->base, periph->layout->offset,
+ (periph->id & periph->layout->pid_mask));
+ pmc_read(periph->base, periph->layout->offset, &val);
+ shift = (val & periph->layout->div_mask) >> shift;
- clk_rate = clk_get_rate(&clk_dev);
+ return parent_rate >> shift;
+}
+
+static ulong clk_sam9x5_peripheral_set_rate(struct clk *clk, ulong rate)
+{
+ struct clk_sam9x5_peripheral *periph = to_clk_sam9x5_peripheral(clk);
+ ulong parent_rate = clk_get_parent_rate(clk);
+ int shift;
+
+ if (!parent_rate)
+ return 0;
+
+ if (periph->id < PERIPHERAL_ID_MIN || !periph->range.max) {
+ if (parent_rate == rate)
+ return rate;
+ else
+ return 0;
+ }
+
+ if (periph->range.max && rate > periph->range.max)
+ return 0;
+
+ for (shift = 0; shift <= PERIPHERAL_MAX_SHIFT; shift++) {
+ if (parent_rate >> shift <= rate)
+ break;
+ }
+ if (shift == PERIPHERAL_MAX_SHIFT + 1)
+ return 0;
- clk_free(&clk_dev);
+ pmc_write(periph->base, periph->layout->offset,
+ (periph->id & periph->layout->pid_mask));
+ pmc_update_bits(periph->base, periph->layout->offset,
+ periph->layout->div_mask | periph->layout->cmd,
+ (shift << (ffs(periph->layout->div_mask) - 1)) |
+ periph->layout->cmd);
- return clk_rate;
+ return parent_rate >> shift;
}
-static struct clk_ops periph_clk_ops = {
- .of_xlate = at91_clk_of_xlate,
- .enable = periph_clk_enable,
- .get_rate = periph_get_rate,
+static const struct clk_ops sam9x5_peripheral_ops = {
+ .enable = clk_sam9x5_peripheral_enable,
+ .disable = clk_sam9x5_peripheral_disable,
+ .get_rate = clk_sam9x5_peripheral_get_rate,
+ .set_rate = clk_sam9x5_peripheral_set_rate,
};
-U_BOOT_DRIVER(clk_periph) = {
- .name = "periph-clk",
- .id = UCLASS_CLK,
- .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
- .probe = at91_clk_probe,
- .ops = &periph_clk_ops,
+struct clk *
+at91_clk_register_sam9x5_peripheral(void __iomem *base,
+ const struct clk_pcr_layout *layout,
+ const char *name, const char *parent_name,
+ u32 id, const struct clk_range *range)
+{
+ struct clk_sam9x5_peripheral *periph;
+ struct clk *clk;
+ int ret;
+
+ if (!base || !layout || !name || !parent_name || !range)
+ return ERR_PTR(-EINVAL);
+
+ periph = kzalloc(sizeof(*periph), GFP_KERNEL);
+ if (!periph)
+ return ERR_PTR(-ENOMEM);
+
+ periph->id = id;
+ periph->base = base;
+ periph->layout = layout;
+ periph->range = *range;
+
+ clk = &periph->clk;
+ clk->flags = CLK_GET_RATE_NOCACHE;
+ ret = clk_register(clk, UBOOT_DM_CLK_AT91_SAM9X5_PERIPH, name,
+ parent_name);
+ if (ret) {
+ kfree(periph);
+ clk = ERR_PTR(ret);
+ }
+
+ return clk;
+}
+
+U_BOOT_DRIVER(at91_sam9x5_periph_clk) = {
+ .name = UBOOT_DM_CLK_AT91_SAM9X5_PERIPH,
+ .id = UCLASS_CLK,
+ .ops = &sam9x5_peripheral_ops,
+ .flags = DM_FLAG_PRE_RELOC,
};
diff --git a/drivers/clk/at91/clk-plla.c b/drivers/clk/at91/clk-plla.c
deleted file mode 100644
index 79d725819f..0000000000
--- a/drivers/clk/at91/clk-plla.c
+++ /dev/null
@@ -1,54 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2016 Atmel Corporation
- * Wenyou.Yang <wenyou.yang@atmel.com>
- */
-
-#include <common.h>
-#include <clk-uclass.h>
-#include <dm.h>
-#include <linux/io.h>
-#include <mach/at91_pmc.h>
-#include "pmc.h"
-
-DECLARE_GLOBAL_DATA_PTR;
-
-static int plla_clk_enable(struct clk *clk)
-{
- struct pmc_platdata *plat = dev_get_platdata(clk->dev);
- struct at91_pmc *pmc = plat->reg_base;
-
- if (readl(&pmc->sr) & AT91_PMC_LOCKA)
- return 0;
-
- return -EINVAL;
-}
-
-static ulong plla_clk_get_rate(struct clk *clk)
-{
- return gd->arch.plla_rate_hz;
-}
-
-static struct clk_ops plla_clk_ops = {
- .enable = plla_clk_enable,
- .get_rate = plla_clk_get_rate,
-};
-
-static int plla_clk_probe(struct udevice *dev)
-{
- return at91_pmc_core_probe(dev);
-}
-
-static const struct udevice_id plla_clk_match[] = {
- { .compatible = "atmel,sama5d3-clk-pll" },
- {}
-};
-
-U_BOOT_DRIVER(at91_plla_clk) = {
- .name = "at91-plla-clk",
- .id = UCLASS_CLK,
- .of_match = plla_clk_match,
- .probe = plla_clk_probe,
- .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
- .ops = &plla_clk_ops,
-};
diff --git a/drivers/clk/at91/clk-plladiv.c b/drivers/clk/at91/clk-plladiv.c
deleted file mode 100644
index ca6158ef6a..0000000000
--- a/drivers/clk/at91/clk-plladiv.c
+++ /dev/null
@@ -1,85 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2018 Microhip / Atmel Corporation
- * Wenyou.Yang <wenyou.yang@microchip.com>
- */
-
-#include <common.h>
-#include <clk-uclass.h>
-#include <dm/device.h>
-#include <linux/io.h>
-#include <mach/at91_pmc.h>
-#include "pmc.h"
-
-static int at91_plladiv_clk_enable(struct clk *clk)
-{
- return 0;
-}
-
-static ulong at91_plladiv_clk_get_rate(struct clk *clk)
-{
- struct pmc_platdata *plat = dev_get_platdata(clk->dev);
- struct at91_pmc *pmc = plat->reg_base;
- struct clk source;
- ulong clk_rate;
- int ret;
-
- ret = clk_get_by_index(clk->dev, 0, &source);
- if (ret)
- return -EINVAL;
-
- clk_rate = clk_get_rate(&source);
- if (readl(&pmc->mckr) & AT91_PMC_MCKR_PLLADIV_2)
- clk_rate /= 2;
-
- return clk_rate;
-}
-
-static ulong at91_plladiv_clk_set_rate(struct clk *clk, ulong rate)
-{
- struct pmc_platdata *plat = dev_get_platdata(clk->dev);
- struct at91_pmc *pmc = plat->reg_base;
- struct clk source;
- ulong parent_rate;
- int ret;
-
- ret = clk_get_by_index(clk->dev, 0, &source);
- if (ret)
- return -EINVAL;
-
- parent_rate = clk_get_rate(&source);
- if ((parent_rate != rate) && ((parent_rate) / 2 != rate))
- return -EINVAL;
-
- if (parent_rate != rate) {
- writel((readl(&pmc->mckr) | AT91_PMC_MCKR_PLLADIV_2),
- &pmc->mckr);
- }
-
- return 0;
-}
-
-static struct clk_ops at91_plladiv_clk_ops = {
- .enable = at91_plladiv_clk_enable,
- .get_rate = at91_plladiv_clk_get_rate,
- .set_rate = at91_plladiv_clk_set_rate,
-};
-
-static int at91_plladiv_clk_probe(struct udevice *dev)
-{
- return at91_pmc_core_probe(dev);
-}
-
-static const struct udevice_id at91_plladiv_clk_match[] = {
- { .compatible = "atmel,at91sam9x5-clk-plldiv" },
- {}
-};
-
-U_BOOT_DRIVER(at91_plladiv_clk) = {
- .name = "at91-plladiv-clk",
- .id = UCLASS_CLK,
- .of_match = at91_plladiv_clk_match,
- .probe = at91_plladiv_clk_probe,
- .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
- .ops = &at91_plladiv_clk_ops,
-};
diff --git a/drivers/clk/at91/clk-programmable.c b/drivers/clk/at91/clk-programmable.c
new file mode 100644
index 0000000000..868de4b177
--- /dev/null
+++ b/drivers/clk/at91/clk-programmable.c
@@ -0,0 +1,208 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Programmable clock support for AT91 architectures.
+ *
+ * Copyright (C) 2020 Microchip Technology Inc. and its subsidiaries
+ *
+ * Author: Claudiu Beznea <claudiu.beznea@microchip.com>
+ *
+ * Based on drivers/clk/at91/clk-programmable.c from Linux.
+ */
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <linux/clk-provider.h>
+#include <linux/clk/at91_pmc.h>
+
+#include "pmc.h"
+
+#define UBOOT_DM_CLK_AT91_PROG "at91-prog-clk"
+
+#define PROG_ID_MAX 7
+
+#define PROG_STATUS_MASK(id) (1 << ((id) + 8))
+#define PROG_PRES(_l, _p) (((_p) >> (_l)->pres_shift) & (_l)->pres_mask)
+#define PROG_MAX_RM9200_CSS 3
+
+struct clk_programmable {
+ void __iomem *base;
+ const u32 *clk_mux_table;
+ const u32 *mux_table;
+ const struct clk_programmable_layout *layout;
+ u32 num_parents;
+ struct clk clk;
+ u8 id;
+};
+
+#define to_clk_programmable(_c) container_of(_c, struct clk_programmable, clk)
+
+static ulong clk_programmable_get_rate(struct clk *clk)
+{
+ struct clk_programmable *prog = to_clk_programmable(clk);
+ const struct clk_programmable_layout *layout = prog->layout;
+ ulong rate, parent_rate = clk_get_parent_rate(clk);
+ unsigned int pckr;
+
+ pmc_read(prog->base, AT91_PMC_PCKR(prog->id), &pckr);
+
+ if (layout->is_pres_direct)
+ rate = parent_rate / (PROG_PRES(layout, pckr) + 1);
+ else
+ rate = parent_rate >> PROG_PRES(layout, pckr);
+
+ return rate;
+}
+
+static int clk_programmable_set_parent(struct clk *clk, struct clk *parent)
+{
+ struct clk_programmable *prog = to_clk_programmable(clk);
+ const struct clk_programmable_layout *layout = prog->layout;
+ unsigned int mask = layout->css_mask;
+ int index;
+
+ index = at91_clk_mux_val_to_index(prog->clk_mux_table,
+ prog->num_parents, parent->id);
+ if (index < 0)
+ return index;
+
+ index = at91_clk_mux_index_to_val(prog->mux_table, prog->num_parents,
+ index);
+ if (index < 0)
+ return index;
+
+ if (layout->have_slck_mck)
+ mask |= AT91_PMC_CSSMCK_MCK;
+
+ if (index > layout->css_mask) {
+ if (index > PROG_MAX_RM9200_CSS && !layout->have_slck_mck)
+ return -EINVAL;
+
+ index |= AT91_PMC_CSSMCK_MCK;
+ }
+
+ pmc_update_bits(prog->base, AT91_PMC_PCKR(prog->id), mask, index);
+
+ return 0;
+}
+
+static ulong clk_programmable_set_rate(struct clk *clk, ulong rate)
+{
+ struct clk_programmable *prog = to_clk_programmable(clk);
+ const struct clk_programmable_layout *layout = prog->layout;
+ ulong parent_rate = clk_get_parent_rate(clk);
+ ulong div = parent_rate / rate;
+ int shift = 0;
+
+ if (!parent_rate || !div)
+ return -EINVAL;
+
+ if (layout->is_pres_direct) {
+ shift = div - 1;
+
+ if (shift > layout->pres_mask)
+ return -EINVAL;
+ } else {
+ shift = fls(div) - 1;
+
+ if (div != (1 << shift))
+ return -EINVAL;
+
+ if (shift >= layout->pres_mask)
+ return -EINVAL;
+ }
+
+ pmc_update_bits(prog->base, AT91_PMC_PCKR(prog->id),
+ layout->pres_mask << layout->pres_shift,
+ shift << layout->pres_shift);
+
+ if (layout->is_pres_direct)
+ return (parent_rate / shift + 1);
+
+ return parent_rate >> shift;
+}
+
+static const struct clk_ops programmable_ops = {
+ .get_rate = clk_programmable_get_rate,
+ .set_parent = clk_programmable_set_parent,
+ .set_rate = clk_programmable_set_rate,
+};
+
+struct clk *at91_clk_register_programmable(void __iomem *base, const char *name,
+ const char *const *parent_names, u8 num_parents, u8 id,
+ const struct clk_programmable_layout *layout,
+ const u32 *clk_mux_table, const u32 *mux_table)
+{
+ struct clk_programmable *prog;
+ struct clk *clk;
+ u32 val, tmp;
+ int ret;
+
+ if (!base || !name || !parent_names || !num_parents ||
+ !layout || !clk_mux_table || !mux_table || id > PROG_ID_MAX)
+ return ERR_PTR(-EINVAL);
+
+ prog = kzalloc(sizeof(*prog), GFP_KERNEL);
+ if (!prog)
+ return ERR_PTR(-ENOMEM);
+
+ prog->id = id;
+ prog->layout = layout;
+ prog->base = base;
+ prog->clk_mux_table = clk_mux_table;
+ prog->mux_table = mux_table;
+ prog->num_parents = num_parents;
+
+ pmc_read(prog->base, AT91_PMC_PCKR(prog->id), &tmp);
+ val = tmp & prog->layout->css_mask;
+ if (layout->have_slck_mck && (tmp & AT91_PMC_CSSMCK_MCK) && !val)
+ ret = PROG_MAX_RM9200_CSS + 1;
+ else
+ ret = at91_clk_mux_val_to_index(prog->mux_table,
+ prog->num_parents, val);
+ if (ret < 0) {
+ kfree(prog);
+ return ERR_PTR(ret);
+ }
+
+ clk = &prog->clk;
+ clk->flags = CLK_GET_RATE_NOCACHE;
+ ret = clk_register(clk, UBOOT_DM_CLK_AT91_PROG, name,
+ parent_names[ret]);
+ if (ret) {
+ kfree(prog);
+ clk = ERR_PTR(ret);
+ }
+
+ return clk;
+}
+
+U_BOOT_DRIVER(at91_prog_clk) = {
+ .name = UBOOT_DM_CLK_AT91_PROG,
+ .id = UCLASS_CLK,
+ .ops = &programmable_ops,
+ .flags = DM_FLAG_PRE_RELOC,
+};
+
+const struct clk_programmable_layout at91rm9200_programmable_layout = {
+ .pres_mask = 0x7,
+ .pres_shift = 2,
+ .css_mask = 0x3,
+ .have_slck_mck = 0,
+ .is_pres_direct = 0,
+};
+
+const struct clk_programmable_layout at91sam9g45_programmable_layout = {
+ .pres_mask = 0x7,
+ .pres_shift = 2,
+ .css_mask = 0x3,
+ .have_slck_mck = 1,
+ .is_pres_direct = 0,
+};
+
+const struct clk_programmable_layout at91sam9x5_programmable_layout = {
+ .pres_mask = 0x7,
+ .pres_shift = 4,
+ .css_mask = 0x7,
+ .have_slck_mck = 0,
+ .is_pres_direct = 0,
+};
diff --git a/drivers/clk/at91/clk-sam9x60-pll.c b/drivers/clk/at91/clk-sam9x60-pll.c
new file mode 100644
index 0000000000..1bfae5fd01
--- /dev/null
+++ b/drivers/clk/at91/clk-sam9x60-pll.c
@@ -0,0 +1,442 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * SAM9X60's PLL clock support.
+ *
+ * Copyright (C) 2020 Microchip Technology Inc. and its subsidiaries
+ *
+ * Author: Claudiu Beznea <claudiu.beznea@microchip.com>
+ *
+ * Based on drivers/clk/at91/clk-sam9x60-pll.c from Linux.
+ *
+ */
+
+#include <asm/processor.h>
+#include <common.h>
+#include <clk-uclass.h>
+#include <div64.h>
+#include <dm.h>
+#include <linux/clk-provider.h>
+#include <linux/clk/at91_pmc.h>
+#include <linux/delay.h>
+
+#include "pmc.h"
+
+#define UBOOT_DM_CLK_AT91_SAM9X60_DIV_PLL "at91-sam9x60-div-pll-clk"
+#define UBOOT_DM_CLK_AT91_SAM9X60_FRAC_PLL "at91-sam9x60-frac-pll-clk"
+
+#define PMC_PLL_CTRL0_DIV_MSK GENMASK(7, 0)
+#define PMC_PLL_CTRL1_MUL_MSK GENMASK(31, 24)
+#define PMC_PLL_CTRL1_FRACR_MSK GENMASK(21, 0)
+
+#define PLL_DIV_MAX (FIELD_GET(PMC_PLL_CTRL0_DIV_MSK, UINT_MAX) + 1)
+#define UPLL_DIV 2
+#define PLL_MUL_MAX (FIELD_GET(PMC_PLL_CTRL1_MUL_MSK, UINT_MAX) + 1)
+
+#define FCORE_MIN (600000000)
+#define FCORE_MAX (1200000000)
+
+#define PLL_MAX_ID 7
+
+struct sam9x60_pll {
+ void __iomem *base;
+ const struct clk_pll_characteristics *characteristics;
+ const struct clk_pll_layout *layout;
+ struct clk clk;
+ u8 id;
+};
+
+#define to_sam9x60_pll(_clk) container_of(_clk, struct sam9x60_pll, clk)
+
+static inline bool sam9x60_pll_ready(void __iomem *base, int id)
+{
+ unsigned int status;
+
+ pmc_read(base, AT91_PMC_PLL_ISR0, &status);
+
+ return !!(status & BIT(id));
+}
+
+static long sam9x60_frac_pll_compute_mul_frac(u32 *mul, u32 *frac, ulong rate,
+ ulong parent_rate)
+{
+ unsigned long tmprate, remainder;
+ unsigned long nmul = 0;
+ unsigned long nfrac = 0;
+
+ if (rate < FCORE_MIN || rate > FCORE_MAX)
+ return -ERANGE;
+
+ /*
+ * Calculate the multiplier associated with the current
+ * divider that provide the closest rate to the requested one.
+ */
+ nmul = mult_frac(rate, 1, parent_rate);
+ tmprate = mult_frac(parent_rate, nmul, 1);
+ remainder = rate - tmprate;
+
+ if (remainder) {
+ nfrac = DIV_ROUND_CLOSEST_ULL((u64)remainder * (1 << 22),
+ parent_rate);
+
+ tmprate += DIV_ROUND_CLOSEST_ULL((u64)nfrac * parent_rate,
+ (1 << 22));
+ }
+
+ /* Check if resulted rate is valid. */
+ if (tmprate < FCORE_MIN || tmprate > FCORE_MAX)
+ return -ERANGE;
+
+ *mul = nmul - 1;
+ *frac = nfrac;
+
+ return tmprate;
+}
+
+static ulong sam9x60_frac_pll_set_rate(struct clk *clk, ulong rate)
+{
+ struct sam9x60_pll *pll = to_sam9x60_pll(clk);
+ void __iomem *base = pll->base;
+ ulong parent_rate = clk_get_parent_rate(clk);
+ u32 nmul, cmul, nfrac, cfrac, val;
+ bool ready = sam9x60_pll_ready(base, pll->id);
+ long ret;
+
+ if (!parent_rate)
+ return 0;
+
+ ret = sam9x60_frac_pll_compute_mul_frac(&nmul, &nfrac, rate,
+ parent_rate);
+ if (ret < 0)
+ return 0;
+
+ pmc_update_bits(base, AT91_PMC_PLL_UPDT, AT91_PMC_PLL_UPDT_ID_MSK,
+ pll->id);
+ pmc_read(base, AT91_PMC_PLL_CTRL1, &val);
+ cmul = (val & pll->layout->mul_mask) >> pll->layout->mul_shift;
+ cfrac = (val & pll->layout->frac_mask) >> pll->layout->frac_shift;
+
+ /* Check against current values. */
+ if (sam9x60_pll_ready(base, pll->id) &&
+ nmul == cmul && nfrac == cfrac)
+ return 0;
+
+ /* Update it to hardware. */
+ pmc_write(base, AT91_PMC_PLL_CTRL1,
+ (nmul << pll->layout->mul_shift) |
+ (nfrac << pll->layout->frac_shift));
+
+ pmc_update_bits(base, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | pll->id);
+
+ while (ready && !sam9x60_pll_ready(base, pll->id)) {
+ debug("waiting for pll %u...\n", pll->id);
+ cpu_relax();
+ }
+
+ return parent_rate * (nmul + 1) + ((u64)parent_rate * nfrac >> 22);
+}
+
+static ulong sam9x60_frac_pll_get_rate(struct clk *clk)
+{
+ struct sam9x60_pll *pll = to_sam9x60_pll(clk);
+ void __iomem *base = pll->base;
+ ulong parent_rate = clk_get_parent_rate(clk);
+ u32 mul, frac, val;
+
+ if (!parent_rate)
+ return 0;
+
+ pmc_update_bits(base, AT91_PMC_PLL_UPDT, AT91_PMC_PLL_UPDT_ID_MSK,
+ pll->id);
+ pmc_read(base, AT91_PMC_PLL_CTRL1, &val);
+ mul = (val & pll->layout->mul_mask) >> pll->layout->mul_shift;
+ frac = (val & pll->layout->frac_mask) >> pll->layout->frac_shift;
+
+ return (parent_rate * (mul + 1) + ((u64)parent_rate * frac >> 22));
+}
+
+static int sam9x60_frac_pll_enable(struct clk *clk)
+{
+ struct sam9x60_pll *pll = to_sam9x60_pll(clk);
+ void __iomem *base = pll->base;
+ unsigned int val;
+ ulong crate;
+
+ crate = sam9x60_frac_pll_get_rate(clk);
+ if (crate < FCORE_MIN || crate > FCORE_MAX)
+ return -ERANGE;
+
+ pmc_update_bits(base, AT91_PMC_PLL_UPDT, AT91_PMC_PLL_UPDT_ID_MSK,
+ pll->id);
+ pmc_read(base, AT91_PMC_PLL_CTRL1, &val);
+
+ if (sam9x60_pll_ready(base, pll->id))
+ return 0;
+
+ pmc_update_bits(base, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PMM_UPDT_STUPTIM_MSK |
+ AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_STUPTIM(0x3f) | pll->id);
+
+ /* Recommended value for AT91_PMC_PLL_ACR */
+ if (pll->characteristics->upll)
+ val = AT91_PMC_PLL_ACR_DEFAULT_UPLL;
+ else
+ val = AT91_PMC_PLL_ACR_DEFAULT_PLLA;
+ pmc_write(base, AT91_PMC_PLL_ACR, val);
+
+ if (pll->characteristics->upll) {
+ /* Enable the UTMI internal bandgap */
+ val |= AT91_PMC_PLL_ACR_UTMIBG;
+ pmc_write(base, AT91_PMC_PLL_ACR, val);
+
+ udelay(10);
+
+ /* Enable the UTMI internal regulator */
+ val |= AT91_PMC_PLL_ACR_UTMIVR;
+ pmc_write(base, AT91_PMC_PLL_ACR, val);
+
+ udelay(10);
+
+ pmc_update_bits(base, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE |
+ AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | pll->id);
+ }
+
+ pmc_update_bits(base, AT91_PMC_PLL_CTRL0,
+ AT91_PMC_PLL_CTRL0_ENLOCK | AT91_PMC_PLL_CTRL0_ENPLL,
+ AT91_PMC_PLL_CTRL0_ENLOCK | AT91_PMC_PLL_CTRL0_ENPLL);
+
+ pmc_update_bits(base, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | pll->id);
+
+ while (!sam9x60_pll_ready(base, pll->id)) {
+ debug("waiting for pll %u...\n", pll->id);
+ cpu_relax();
+ }
+
+ return 0;
+}
+
+static int sam9x60_frac_pll_disable(struct clk *clk)
+{
+ struct sam9x60_pll *pll = to_sam9x60_pll(clk);
+ void __iomem *base = pll->base;
+
+ pmc_update_bits(base, AT91_PMC_PLL_UPDT, AT91_PMC_PLL_UPDT_ID_MSK,
+ pll->id);
+
+ pmc_update_bits(base, AT91_PMC_PLL_CTRL0,
+ AT91_PMC_PLL_CTRL0_ENPLL, 0);
+
+ if (pll->characteristics->upll)
+ pmc_update_bits(base, AT91_PMC_PLL_ACR,
+ AT91_PMC_PLL_ACR_UTMIBG |
+ AT91_PMC_PLL_ACR_UTMIVR, 0);
+
+ pmc_update_bits(base, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | pll->id);
+
+ return 0;
+}
+
+static const struct clk_ops sam9x60_frac_pll_ops = {
+ .enable = sam9x60_frac_pll_enable,
+ .disable = sam9x60_frac_pll_disable,
+ .set_rate = sam9x60_frac_pll_set_rate,
+ .get_rate = sam9x60_frac_pll_get_rate,
+};
+
+static int sam9x60_div_pll_enable(struct clk *clk)
+{
+ struct sam9x60_pll *pll = to_sam9x60_pll(clk);
+ void __iomem *base = pll->base;
+ unsigned int val;
+
+ pmc_update_bits(base, AT91_PMC_PLL_UPDT, AT91_PMC_PLL_UPDT_ID_MSK,
+ pll->id);
+ pmc_read(base, AT91_PMC_PLL_CTRL0, &val);
+
+ /* Stop if enabled. */
+ if (val & pll->layout->endiv_mask)
+ return 0;
+
+ pmc_update_bits(base, AT91_PMC_PLL_CTRL0,
+ pll->layout->endiv_mask,
+ (1 << pll->layout->endiv_shift));
+
+ pmc_update_bits(base, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | pll->id);
+
+ while (!sam9x60_pll_ready(base, pll->id)) {
+ debug("waiting for pll %u...\n", pll->id);
+ cpu_relax();
+ }
+
+ return 0;
+}
+
+static int sam9x60_div_pll_disable(struct clk *clk)
+{
+ struct sam9x60_pll *pll = to_sam9x60_pll(clk);
+ void __iomem *base = pll->base;
+
+ pmc_update_bits(base, AT91_PMC_PLL_UPDT, AT91_PMC_PLL_UPDT_ID_MSK,
+ pll->id);
+
+ pmc_update_bits(base, AT91_PMC_PLL_CTRL0,
+ pll->layout->endiv_mask, 0);
+
+ pmc_update_bits(base, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | pll->id);
+
+ return 0;
+}
+
+static ulong sam9x60_div_pll_set_rate(struct clk *clk, ulong rate)
+{
+ struct sam9x60_pll *pll = to_sam9x60_pll(clk);
+ void __iomem *base = pll->base;
+ const struct clk_pll_characteristics *characteristics =
+ pll->characteristics;
+ ulong parent_rate = clk_get_parent_rate(clk);
+ u8 div = DIV_ROUND_CLOSEST_ULL(parent_rate, rate) - 1;
+ ulong req_rate = parent_rate / (div + 1);
+ bool ready = sam9x60_pll_ready(base, pll->id);
+ u32 val;
+
+ if (!parent_rate || div > pll->layout->div_mask ||
+ req_rate < characteristics->output[0].min ||
+ req_rate > characteristics->output[0].max)
+ return 0;
+
+ pmc_update_bits(base, AT91_PMC_PLL_UPDT, AT91_PMC_PLL_UPDT_ID_MSK,
+ pll->id);
+ pmc_read(base, AT91_PMC_PLL_CTRL0, &val);
+ /* Compare against current value. */
+ if (div == ((val & pll->layout->div_mask) >> pll->layout->div_shift))
+ return 0;
+
+ /* Update it to hardware. */
+ pmc_update_bits(base, AT91_PMC_PLL_CTRL0,
+ pll->layout->div_mask,
+ div << pll->layout->div_shift);
+
+ pmc_update_bits(base, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | pll->id);
+
+ while (ready && !sam9x60_pll_ready(base, pll->id)) {
+ debug("waiting for pll %u...\n", pll->id);
+ cpu_relax();
+ }
+
+ return req_rate;
+}
+
+static ulong sam9x60_div_pll_get_rate(struct clk *clk)
+{
+ struct sam9x60_pll *pll = to_sam9x60_pll(clk);
+ void __iomem *base = pll->base;
+ ulong parent_rate = clk_get_parent_rate(clk);
+ u32 val;
+ u8 div;
+
+ if (!parent_rate)
+ return 0;
+
+ pmc_update_bits(base, AT91_PMC_PLL_UPDT, AT91_PMC_PLL_UPDT_ID_MSK,
+ pll->id);
+
+ pmc_read(base, AT91_PMC_PLL_CTRL0, &val);
+
+ div = (val & pll->layout->div_mask) >> pll->layout->div_shift;
+
+ return parent_rate / (div + 1);
+}
+
+static const struct clk_ops sam9x60_div_pll_ops = {
+ .enable = sam9x60_div_pll_enable,
+ .disable = sam9x60_div_pll_disable,
+ .set_rate = sam9x60_div_pll_set_rate,
+ .get_rate = sam9x60_div_pll_get_rate,
+};
+
+static struct clk *
+sam9x60_clk_register_pll(void __iomem *base, const char *type,
+ const char *name, const char *parent_name, u8 id,
+ const struct clk_pll_characteristics *characteristics,
+ const struct clk_pll_layout *layout, u32 flags)
+{
+ struct sam9x60_pll *pll;
+ struct clk *clk;
+ int ret;
+
+ if (!base || !type || !name || !parent_name || !characteristics ||
+ !layout || id > PLL_MAX_ID)
+ return ERR_PTR(-EINVAL);
+
+ pll = kzalloc(sizeof(*pll), GFP_KERNEL);
+ if (!pll)
+ return ERR_PTR(-ENOMEM);
+
+ pll->id = id;
+ pll->characteristics = characteristics;
+ pll->layout = layout;
+ pll->base = base;
+ clk = &pll->clk;
+ clk->flags = flags;
+
+ ret = clk_register(clk, type, name, parent_name);
+ if (ret) {
+ kfree(pll);
+ clk = ERR_PTR(ret);
+ }
+
+ return clk;
+}
+
+struct clk *
+sam9x60_clk_register_div_pll(void __iomem *base, const char *name,
+ const char *parent_name, u8 id,
+ const struct clk_pll_characteristics *characteristics,
+ const struct clk_pll_layout *layout, bool critical)
+{
+ return sam9x60_clk_register_pll(base,
+ UBOOT_DM_CLK_AT91_SAM9X60_DIV_PLL, name, parent_name, id,
+ characteristics, layout,
+ CLK_GET_RATE_NOCACHE | (critical ? CLK_IS_CRITICAL : 0));
+}
+
+struct clk *
+sam9x60_clk_register_frac_pll(void __iomem *base, const char *name,
+ const char *parent_name, u8 id,
+ const struct clk_pll_characteristics *characteristics,
+ const struct clk_pll_layout *layout, bool critical)
+{
+ return sam9x60_clk_register_pll(base,
+ UBOOT_DM_CLK_AT91_SAM9X60_FRAC_PLL, name, parent_name, id,
+ characteristics, layout,
+ CLK_GET_RATE_NOCACHE | (critical ? CLK_IS_CRITICAL : 0));
+}
+
+U_BOOT_DRIVER(at91_sam9x60_div_pll_clk) = {
+ .name = UBOOT_DM_CLK_AT91_SAM9X60_DIV_PLL,
+ .id = UCLASS_CLK,
+ .ops = &sam9x60_div_pll_ops,
+ .flags = DM_FLAG_PRE_RELOC,
+};
+
+U_BOOT_DRIVER(at91_sam9x60_frac_pll_clk) = {
+ .name = UBOOT_DM_CLK_AT91_SAM9X60_FRAC_PLL,
+ .id = UCLASS_CLK,
+ .ops = &sam9x60_frac_pll_ops,
+ .flags = DM_FLAG_PRE_RELOC,
+};
+
diff --git a/drivers/clk/at91/clk-slow.c b/drivers/clk/at91/clk-slow.c
deleted file mode 100644
index 1f8665768b..0000000000
--- a/drivers/clk/at91/clk-slow.c
+++ /dev/null
@@ -1,36 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2016 Atmel Corporation
- * Wenyou.Yang <wenyou.yang@atmel.com>
- */
-
-#include <common.h>
-#include <clk-uclass.h>
-#include <dm.h>
-
-static int at91_slow_clk_enable(struct clk *clk)
-{
- return 0;
-}
-
-static ulong at91_slow_clk_get_rate(struct clk *clk)
-{
- return CONFIG_SYS_AT91_SLOW_CLOCK;
-}
-
-static struct clk_ops at91_slow_clk_ops = {
- .enable = at91_slow_clk_enable,
- .get_rate = at91_slow_clk_get_rate,
-};
-
-static const struct udevice_id at91_slow_clk_match[] = {
- { .compatible = "atmel,at91sam9x5-clk-slow" },
- {}
-};
-
-U_BOOT_DRIVER(at91_slow_clk) = {
- .name = "at91-slow-clk",
- .id = UCLASS_CLK,
- .of_match = at91_slow_clk_match,
- .ops = &at91_slow_clk_ops,
-};
diff --git a/drivers/clk/at91/clk-system.c b/drivers/clk/at91/clk-system.c
index 76b1958670..82f79e74a1 100644
--- a/drivers/clk/at91/clk-system.c
+++ b/drivers/clk/at91/clk-system.c
@@ -1,111 +1,112 @@
// SPDX-License-Identifier: GPL-2.0+
/*
- * Copyright (C) 2016 Atmel Corporation
- * Wenyou.Yang <wenyou.yang@atmel.com>
+ * System clock support for AT91 architectures.
+ *
+ * Copyright (C) Microchip Technology Inc. and its subsidiaries
+ *
+ * Author: Claudiu Beznea <claudiu.beznea@microchip.com>
+ *
+ * Based on drivers/clk/at91/clk-system.c from Linux.
*/
-
+#include <asm/processor.h>
#include <common.h>
#include <clk-uclass.h>
#include <dm.h>
-#include <linux/bitops.h>
#include <linux/io.h>
-#include <mach/at91_pmc.h>
+#include <linux/clk-provider.h>
+#include <linux/clk/at91_pmc.h>
+
#include "pmc.h"
-#define SYSTEM_MAX_ID 31
+#define UBOOT_DM_CLK_AT91_SYSTEM "at91-system-clk"
-/**
- * at91_system_clk_bind() - for the system clock driver
- * Recursively bind its children as clk devices.
- *
- * @return: 0 on success, or negative error code on failure
- */
-static int at91_system_clk_bind(struct udevice *dev)
-{
- return at91_clk_sub_device_bind(dev, "system-clk");
-}
-
-static const struct udevice_id at91_system_clk_match[] = {
- { .compatible = "atmel,at91rm9200-clk-system" },
- {}
-};
+#define SYSTEM_MAX_ID 31
-U_BOOT_DRIVER(at91_system_clk) = {
- .name = "at91-system-clk",
- .id = UCLASS_MISC,
- .of_match = at91_system_clk_match,
- .bind = at91_system_clk_bind,
+struct clk_system {
+ void __iomem *base;
+ struct clk clk;
+ u8 id;
};
-/*----------------------------------------------------------*/
+#define to_clk_system(_c) container_of(_c, struct clk_system, clk)
static inline int is_pck(int id)
{
return (id >= 8) && (id <= 15);
}
-static ulong system_clk_get_rate(struct clk *clk)
+static inline bool clk_system_ready(void __iomem *base, int id)
{
- struct clk clk_dev;
- int ret;
+ unsigned int status;
- ret = clk_get_by_index(clk->dev, 0, &clk_dev);
- if (ret)
- return -EINVAL;
+ pmc_read(base, AT91_PMC_SR, &status);
- return clk_get_rate(&clk_dev);
+ return !!(status & (1 << id));
}
-static ulong system_clk_set_rate(struct clk *clk, ulong rate)
+static int clk_system_enable(struct clk *clk)
{
- struct clk clk_dev;
- int ret;
+ struct clk_system *sys = to_clk_system(clk);
- ret = clk_get_by_index(clk->dev, 0, &clk_dev);
- if (ret)
- return -EINVAL;
+ pmc_write(sys->base, AT91_PMC_SCER, 1 << sys->id);
- return clk_set_rate(&clk_dev, rate);
+ if (!is_pck(sys->id))
+ return 0;
+
+ while (!clk_system_ready(sys->base, sys->id)) {
+ debug("waiting for pck%u\n", sys->id);
+ cpu_relax();
+ }
+
+ return 0;
}
-static int system_clk_enable(struct clk *clk)
+static int clk_system_disable(struct clk *clk)
{
- struct pmc_platdata *plat = dev_get_platdata(clk->dev);
- struct at91_pmc *pmc = plat->reg_base;
- u32 mask;
+ struct clk_system *sys = to_clk_system(clk);
- if (clk->id > SYSTEM_MAX_ID)
- return -EINVAL;
+ pmc_write(sys->base, AT91_PMC_SCDR, 1 << sys->id);
- mask = BIT(clk->id);
+ return 0;
+}
- writel(mask, &pmc->scer);
+static const struct clk_ops system_ops = {
+ .enable = clk_system_enable,
+ .disable = clk_system_disable,
+ .get_rate = clk_generic_get_rate,
+};
- /**
- * For the programmable clocks the Ready status in the PMC
- * status register should be checked after enabling.
- * For other clocks this is unnecessary.
- */
- if (!is_pck(clk->id))
- return 0;
+struct clk *at91_clk_register_system(void __iomem *base, const char *name,
+ const char *parent_name, u8 id)
+{
+ struct clk_system *sys;
+ struct clk *clk;
+ int ret;
- while (!(readl(&pmc->sr) & mask))
- ;
+ if (!base || !name || !parent_name || id > SYSTEM_MAX_ID)
+ return ERR_PTR(-EINVAL);
- return 0;
-}
+ sys = kzalloc(sizeof(*sys), GFP_KERNEL);
+ if (!sys)
+ return ERR_PTR(-ENOMEM);
-static struct clk_ops system_clk_ops = {
- .of_xlate = at91_clk_of_xlate,
- .get_rate = system_clk_get_rate,
- .set_rate = system_clk_set_rate,
- .enable = system_clk_enable,
-};
+ sys->id = id;
+ sys->base = base;
-U_BOOT_DRIVER(system_clk) = {
- .name = "system-clk",
+ clk = &sys->clk;
+ clk->flags = CLK_GET_RATE_NOCACHE;
+ ret = clk_register(clk, UBOOT_DM_CLK_AT91_SYSTEM, name, parent_name);
+ if (ret) {
+ kfree(sys);
+ clk = ERR_PTR(ret);
+ }
+
+ return clk;
+}
+
+U_BOOT_DRIVER(at91_system_clk) = {
+ .name = UBOOT_DM_CLK_AT91_SYSTEM,
.id = UCLASS_CLK,
- .probe = at91_clk_probe,
- .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
- .ops = &system_clk_ops,
+ .ops = &system_ops,
+ .flags = DM_FLAG_PRE_RELOC,
};
diff --git a/drivers/clk/at91/clk-usb.c b/drivers/clk/at91/clk-usb.c
deleted file mode 100644
index af9d724369..0000000000
--- a/drivers/clk/at91/clk-usb.c
+++ /dev/null
@@ -1,147 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2018 Microhip / Atmel Corporation
- * Wenyou.Yang <wenyou.yang@microchip.com>
- */
-
-#include <common.h>
-#include <clk-uclass.h>
-#include <log.h>
-#include <dm/device.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <mach/at91_pmc.h>
-#include "pmc.h"
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#define AT91_USB_CLK_SOURCE_MAX 2
-#define AT91_USB_CLK_MAX_DIV 15
-
-struct at91_usb_clk_priv {
- u32 num_clksource;
-};
-
-static ulong at91_usb_clk_get_rate(struct clk *clk)
-{
- struct pmc_platdata *plat = dev_get_platdata(clk->dev);
- struct at91_pmc *pmc = plat->reg_base;
- struct clk source;
- u32 tmp, usbdiv;
- u8 source_index;
- int ret;
-
- tmp = readl(&pmc->pcr);
- source_index = (tmp >> AT91_PMC_USB_USBS_OFFSET) &
- AT91_PMC_USB_USBS_MASK;
- usbdiv = (tmp >> AT91_PMC_USB_DIV_OFFSET) & AT91_PMC_USB_DIV_MASK;
-
- ret = clk_get_by_index(clk->dev, source_index, &source);
- if (ret)
- return 0;
-
- return clk_get_rate(&source) / (usbdiv + 1);
-}
-
-static ulong at91_usb_clk_set_rate(struct clk *clk, ulong rate)
-{
- struct pmc_platdata *plat = dev_get_platdata(clk->dev);
- struct at91_pmc *pmc = plat->reg_base;
- struct at91_usb_clk_priv *priv = dev_get_priv(clk->dev);
- struct clk source, best_source;
- ulong tmp_rate, best_rate = rate, source_rate;
- int tmp_diff, best_diff = -1;
- u32 div, best_div = 0;
- u8 best_source_index = 0;
- u8 i;
- u32 tmp;
- int ret;
-
- for (i = 0; i < priv->num_clksource; i++) {
- ret = clk_get_by_index(clk->dev, i, &source);
- if (ret)
- return ret;
-
- source_rate = clk_get_rate(&source);
- if (IS_ERR_VALUE(source_rate))
- return source_rate;
-
- for (div = 1; div < AT91_USB_CLK_MAX_DIV + 2; div++) {
- tmp_rate = DIV_ROUND_CLOSEST(source_rate, div);
- tmp_diff = abs(rate - tmp_rate);
-
- if (best_diff < 0 || best_diff > tmp_diff) {
- best_rate = tmp_rate;
- best_diff = tmp_diff;
-
- best_div = div - 1;
- best_source = source;
- best_source_index = i;
- }
-
- if (!best_diff || tmp_rate < rate)
- break;
- }
-
- if (!best_diff)
- break;
- }
-
- debug("AT91 USB: best sourc: %s, best_rate = %ld, best_div = %d\n",
- best_source.dev->name, best_rate, best_div);
-
- ret = clk_enable(&best_source);
- if (ret)
- return ret;
-
- tmp = AT91_PMC_USB_USBS_(best_source_index) |
- AT91_PMC_USB_DIV_(best_div);
- writel(tmp, &pmc->usb);
-
- return 0;
-}
-
-static struct clk_ops at91_usb_clk_ops = {
- .get_rate = at91_usb_clk_get_rate,
- .set_rate = at91_usb_clk_set_rate,
-};
-
-static int at91_usb_clk_ofdata_to_platdata(struct udevice *dev)
-{
- struct at91_usb_clk_priv *priv = dev_get_priv(dev);
- u32 cells[AT91_USB_CLK_SOURCE_MAX];
- u32 num_clksource;
-
- num_clksource = fdtdec_get_int_array_count(gd->fdt_blob,
- dev_of_offset(dev),
- "clocks", cells,
- AT91_USB_CLK_SOURCE_MAX);
-
- if (!num_clksource)
- return -1;
-
- priv->num_clksource = num_clksource;
-
- return 0;
-}
-
-static int at91_usb_clk_probe(struct udevice *dev)
-{
- return at91_pmc_core_probe(dev);
-}
-
-static const struct udevice_id at91_usb_clk_match[] = {
- { .compatible = "atmel,at91sam9x5-clk-usb" },
- {}
-};
-
-U_BOOT_DRIVER(at91_usb_clk) = {
- .name = "at91-usb-clk",
- .id = UCLASS_CLK,
- .of_match = at91_usb_clk_match,
- .probe = at91_usb_clk_probe,
- .ofdata_to_platdata = at91_usb_clk_ofdata_to_platdata,
- .priv_auto_alloc_size = sizeof(struct at91_usb_clk_priv),
- .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
- .ops = &at91_usb_clk_ops,
-};
diff --git a/drivers/clk/at91/clk-utmi.c b/drivers/clk/at91/clk-utmi.c
index 18af0bfeaa..7c8bcfb51d 100644
--- a/drivers/clk/at91/clk-utmi.c
+++ b/drivers/clk/at91/clk-utmi.c
@@ -1,49 +1,65 @@
// SPDX-License-Identifier: GPL-2.0+
/*
- * Copyright (C) 2016 Atmel Corporation
- * Wenyou.Yang <wenyou.yang@atmel.com>
+ * UTMI clock support for AT91 architectures.
+ *
+ * Copyright (C) 2020 Microchip Technology Inc. and its subsidiaries
+ *
+ * Author: Claudiu Beznea <claudiu.beznea@microchip.com>
+ *
+ * Based on drivers/clk/at91/clk-utmi.c from Linux.
*/
-
+#include <asm/processor.h>
#include <common.h>
#include <clk-uclass.h>
#include <dm.h>
-#include <syscon.h>
-#include <linux/io.h>
-#include <mach/at91_pmc.h>
+#include <linux/clk-provider.h>
+#include <linux/clk/at91_pmc.h>
#include <mach/at91_sfr.h>
+#include <regmap.h>
+#include <syscon.h>
+
#include "pmc.h"
+#define UBOOT_DM_CLK_AT91_UTMI "at91-utmi-clk"
+#define UBOOT_DM_CLK_AT91_SAMA7G5_UTMI "at91-sama7g5-utmi-clk"
+
/*
* The purpose of this clock is to generate a 480 MHz signal. A different
* rate can't be configured.
*/
#define UTMI_RATE 480000000
-static int utmi_clk_enable(struct clk *clk)
+struct clk_utmi {
+ void __iomem *base;
+ struct regmap *regmap_sfr;
+ struct clk clk;
+};
+
+#define to_clk_utmi(_clk) container_of(_clk, struct clk_utmi, clk)
+
+static inline bool clk_utmi_ready(struct regmap *regmap)
+{
+ unsigned int status;
+
+ pmc_read(regmap, AT91_PMC_SR, &status);
+
+ return !!(status & AT91_PMC_LOCKU);
+}
+
+static int clk_utmi_enable(struct clk *clk)
{
- struct pmc_platdata *plat = dev_get_platdata(clk->dev);
- struct at91_pmc *pmc = plat->reg_base;
- struct clk clk_dev;
- ulong clk_rate;
- u32 utmi_ref_clk_freq;
- u32 tmp;
- int err;
- int timeout = 2000000;
-
- if (readl(&pmc->sr) & AT91_PMC_LOCKU)
- return 0;
+ struct clk_utmi *utmi = to_clk_utmi(clk);
+ unsigned int uckr = AT91_PMC_UPLLEN | AT91_PMC_UPLLCOUNT |
+ AT91_PMC_BIASEN;
+ unsigned int utmi_ref_clk_freq;
+ ulong parent_rate = clk_get_parent_rate(clk);
/*
* If mainck rate is different from 12 MHz, we have to configure the
* FREQ field of the SFR_UTMICKTRIM register to generate properly
* the utmi clock.
*/
- err = clk_get_by_index(clk->dev, 0, &clk_dev);
- if (err)
- return -EINVAL;
-
- clk_rate = clk_get_rate(&clk_dev);
- switch (clk_rate) {
+ switch (parent_rate) {
case 12000000:
utmi_ref_clk_freq = 0;
break;
@@ -61,82 +77,158 @@ static int utmi_clk_enable(struct clk *clk)
utmi_ref_clk_freq = 3;
break;
default:
- printf("UTMICK: unsupported mainck rate\n");
+ debug("UTMICK: unsupported mainck rate\n");
return -EINVAL;
}
- if (plat->regmap_sfr) {
- err = regmap_read(plat->regmap_sfr, AT91_SFR_UTMICKTRIM, &tmp);
- if (err)
- return -EINVAL;
-
- tmp &= ~AT91_UTMICKTRIM_FREQ;
- tmp |= utmi_ref_clk_freq;
- err = regmap_write(plat->regmap_sfr, AT91_SFR_UTMICKTRIM, tmp);
- if (err)
- return -EINVAL;
+ if (utmi->regmap_sfr) {
+ regmap_update_bits(utmi->regmap_sfr, AT91_SFR_UTMICKTRIM,
+ AT91_UTMICKTRIM_FREQ, utmi_ref_clk_freq);
} else if (utmi_ref_clk_freq) {
- printf("UTMICK: sfr node required\n");
+ debug("UTMICK: sfr node required\n");
return -EINVAL;
}
- tmp = readl(&pmc->uckr);
- tmp |= AT91_PMC_UPLLEN |
- AT91_PMC_UPLLCOUNT |
- AT91_PMC_BIASEN;
- writel(tmp, &pmc->uckr);
-
- while ((--timeout) && !(readl(&pmc->sr) & AT91_PMC_LOCKU))
- ;
- if (!timeout) {
- printf("UTMICK: timeout waiting for UPLL lock\n");
- return -ETIMEDOUT;
+ pmc_update_bits(utmi->base, AT91_CKGR_UCKR, uckr, uckr);
+
+ while (!clk_utmi_ready(utmi->base)) {
+ debug("waiting for utmi...\n");
+ cpu_relax();
}
return 0;
}
-static ulong utmi_clk_get_rate(struct clk *clk)
+static int clk_utmi_disable(struct clk *clk)
+{
+ struct clk_utmi *utmi = to_clk_utmi(clk);
+
+ pmc_update_bits(utmi->base, AT91_CKGR_UCKR, AT91_PMC_UPLLEN, 0);
+
+ return 0;
+}
+
+static ulong clk_utmi_get_rate(struct clk *clk)
{
/* UTMI clk rate is fixed. */
return UTMI_RATE;
}
-static struct clk_ops utmi_clk_ops = {
- .enable = utmi_clk_enable,
- .get_rate = utmi_clk_get_rate,
+static const struct clk_ops utmi_ops = {
+ .enable = clk_utmi_enable,
+ .disable = clk_utmi_disable,
+ .get_rate = clk_utmi_get_rate,
};
-static int utmi_clk_ofdata_to_platdata(struct udevice *dev)
+struct clk *at91_clk_register_utmi(void __iomem *base, struct udevice *dev,
+ const char *name, const char *parent_name)
{
- struct pmc_platdata *plat = dev_get_platdata(dev);
struct udevice *syscon;
+ struct clk_utmi *utmi;
+ struct clk *clk;
+ int ret;
+
+ if (!base || !dev || !name || !parent_name)
+ return ERR_PTR(-EINVAL);
+
+ ret = uclass_get_device_by_phandle(UCLASS_SYSCON, dev,
+ "regmap-sfr", &syscon);
+ if (ret)
+ return ERR_PTR(ret);
+
+ utmi = kzalloc(sizeof(*utmi), GFP_KERNEL);
+ if (!utmi)
+ return ERR_PTR(-ENOMEM);
+
+ utmi->base = base;
+ utmi->regmap_sfr = syscon_get_regmap(syscon);
+ if (!utmi->regmap_sfr) {
+ kfree(utmi);
+ return ERR_PTR(-ENODEV);
+ }
- uclass_get_device_by_phandle(UCLASS_SYSCON, dev,
- "regmap-sfr", &syscon);
-
- if (syscon)
- plat->regmap_sfr = syscon_get_regmap(syscon);
+ clk = &utmi->clk;
+ clk->flags = CLK_GET_RATE_NOCACHE;
+ ret = clk_register(clk, UBOOT_DM_CLK_AT91_UTMI, name, parent_name);
+ if (ret) {
+ kfree(utmi);
+ clk = ERR_PTR(ret);
+ }
- return 0;
+ return clk;
}
-static int utmi_clk_probe(struct udevice *dev)
+U_BOOT_DRIVER(at91_utmi_clk) = {
+ .name = UBOOT_DM_CLK_AT91_UTMI,
+ .id = UCLASS_CLK,
+ .ops = &utmi_ops,
+ .flags = DM_FLAG_PRE_RELOC,
+};
+
+static int clk_utmi_sama7g5_enable(struct clk *clk)
{
- return at91_pmc_core_probe(dev);
+ struct clk_utmi *utmi = to_clk_utmi(clk);
+ ulong parent_rate = clk_get_parent_rate(clk);
+ unsigned int val;
+
+ switch (parent_rate) {
+ case 16000000:
+ val = 0;
+ break;
+ case 20000000:
+ val = 2;
+ break;
+ case 24000000:
+ val = 3;
+ break;
+ case 32000000:
+ val = 5;
+ break;
+ default:
+ debug("UTMICK: unsupported main_xtal rate\n");
+ return -EINVAL;
+ }
+
+ pmc_write(utmi->base, AT91_PMC_XTALF, val);
+
+ return 0;
}
-static const struct udevice_id utmi_clk_match[] = {
- { .compatible = "atmel,at91sam9x5-clk-utmi" },
- {}
+static const struct clk_ops sama7g5_utmi_ops = {
+ .enable = clk_utmi_sama7g5_enable,
+ .get_rate = clk_utmi_get_rate,
};
-U_BOOT_DRIVER(at91sam9x5_utmi_clk) = {
- .name = "at91sam9x5-utmi-clk",
+struct clk *at91_clk_sama7g5_register_utmi(void __iomem *base,
+ const char *name, const char *parent_name)
+{
+ struct clk_utmi *utmi;
+ struct clk *clk;
+ int ret;
+
+ if (!base || !name || !parent_name)
+ return ERR_PTR(-EINVAL);
+
+ utmi = kzalloc(sizeof(*utmi), GFP_KERNEL);
+ if (!utmi)
+ return ERR_PTR(-ENOMEM);
+
+ utmi->base = base;
+
+ clk = &utmi->clk;
+ ret = clk_register(clk, UBOOT_DM_CLK_AT91_SAMA7G5_UTMI, name,
+ parent_name);
+ if (ret) {
+ kfree(utmi);
+ clk = ERR_PTR(ret);
+ }
+
+ return clk;
+}
+
+U_BOOT_DRIVER(at91_sama7g5_utmi_clk) = {
+ .name = UBOOT_DM_CLK_AT91_SAMA7G5_UTMI,
.id = UCLASS_CLK,
- .of_match = utmi_clk_match,
- .probe = utmi_clk_probe,
- .ofdata_to_platdata = utmi_clk_ofdata_to_platdata,
- .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
- .ops = &utmi_clk_ops,
+ .ops = &sama7g5_utmi_ops,
+ .flags = DM_FLAG_PRE_RELOC,
};
diff --git a/drivers/clk/at91/compat.c b/drivers/clk/at91/compat.c
new file mode 100644
index 0000000000..8cf6254046
--- /dev/null
+++ b/drivers/clk/at91/compat.c
@@ -0,0 +1,1023 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Compatible code for non CCF AT91 platforms.
+ *
+ * Copyright (C) 2020 Microchip Technology Inc. and its subsidiaries
+ *
+ * Author: Claudiu Beznea <claudiu.beznea@microchip.com>
+ */
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <dm/lists.h>
+#include <dm/util.h>
+#include <mach/at91_pmc.h>
+#include <mach/at91_sfr.h>
+#include <regmap.h>
+#include <syscon.h>
+
+#include "pmc.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct pmc_platdata {
+ struct at91_pmc *reg_base;
+ struct regmap *regmap_sfr;
+};
+
+static const struct udevice_id at91_pmc_match[] = {
+ { .compatible = "atmel,at91rm9200-pmc" },
+ { .compatible = "atmel,at91sam9260-pmc" },
+ { .compatible = "atmel,at91sam9g45-pmc" },
+ { .compatible = "atmel,at91sam9n12-pmc" },
+ { .compatible = "atmel,at91sam9x5-pmc" },
+ { .compatible = "atmel,sama5d3-pmc" },
+ { .compatible = "atmel,sama5d2-pmc" },
+ {}
+};
+
+U_BOOT_DRIVER(at91_pmc) = {
+ .name = "at91-pmc",
+ .id = UCLASS_SIMPLE_BUS,
+ .of_match = at91_pmc_match,
+};
+
+static int at91_pmc_core_probe(struct udevice *dev)
+{
+ struct pmc_platdata *plat = dev_get_platdata(dev);
+
+ dev = dev_get_parent(dev);
+
+ plat->reg_base = dev_read_addr_ptr(dev);
+
+ return 0;
+}
+
+/**
+ * at91_clk_sub_device_bind() - for the at91 clock driver
+ * Recursively bind its children as clk devices.
+ *
+ * @return: 0 on success, or negative error code on failure
+ */
+int at91_clk_sub_device_bind(struct udevice *dev, const char *drv_name)
+{
+ const void *fdt = gd->fdt_blob;
+ int offset = dev_of_offset(dev);
+ bool pre_reloc_only = !(gd->flags & GD_FLG_RELOC);
+ const char *name;
+ int ret;
+
+ for (offset = fdt_first_subnode(fdt, offset);
+ offset > 0;
+ offset = fdt_next_subnode(fdt, offset)) {
+ if (pre_reloc_only &&
+ !ofnode_pre_reloc(offset_to_ofnode(offset)))
+ continue;
+ /*
+ * If this node has "compatible" property, this is not
+ * a clock sub-node, but a normal device. skip.
+ */
+ fdt_get_property(fdt, offset, "compatible", &ret);
+ if (ret >= 0)
+ continue;
+
+ if (ret != -FDT_ERR_NOTFOUND)
+ return ret;
+
+ name = fdt_get_name(fdt, offset, NULL);
+ if (!name)
+ return -EINVAL;
+ ret = device_bind_driver_to_node(dev, drv_name, name,
+ offset_to_ofnode(offset), NULL);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+int at91_clk_of_xlate(struct clk *clk, struct ofnode_phandle_args *args)
+{
+ int periph;
+
+ if (args->args_count) {
+ debug("Invalid args_count: %d\n", args->args_count);
+ return -EINVAL;
+ }
+
+ periph = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(clk->dev), "reg",
+ -1);
+ if (periph < 0)
+ return -EINVAL;
+
+ clk->id = periph;
+
+ return 0;
+}
+
+int at91_clk_probe(struct udevice *dev)
+{
+ struct udevice *dev_periph_container, *dev_pmc;
+ struct pmc_platdata *plat = dev_get_platdata(dev);
+
+ dev_periph_container = dev_get_parent(dev);
+ dev_pmc = dev_get_parent(dev_periph_container);
+
+ plat->reg_base = dev_read_addr_ptr(dev_pmc);
+
+ return 0;
+}
+
+/* SCKC specific code. */
+static const struct udevice_id at91_sckc_match[] = {
+ { .compatible = "atmel,at91sam9x5-sckc" },
+ {}
+};
+
+U_BOOT_DRIVER(at91_sckc) = {
+ .name = "at91-sckc",
+ .id = UCLASS_SIMPLE_BUS,
+ .of_match = at91_sckc_match,
+};
+
+/* Slow clock specific code. */
+static int at91_slow_clk_enable(struct clk *clk)
+{
+ return 0;
+}
+
+static ulong at91_slow_clk_get_rate(struct clk *clk)
+{
+ return CONFIG_SYS_AT91_SLOW_CLOCK;
+}
+
+static struct clk_ops at91_slow_clk_ops = {
+ .enable = at91_slow_clk_enable,
+ .get_rate = at91_slow_clk_get_rate,
+};
+
+static const struct udevice_id at91_slow_clk_match[] = {
+ { .compatible = "atmel,at91sam9x5-clk-slow" },
+ {}
+};
+
+U_BOOT_DRIVER(at91_slow_clk) = {
+ .name = "at91-slow-clk",
+ .id = UCLASS_CLK,
+ .of_match = at91_slow_clk_match,
+ .ops = &at91_slow_clk_ops,
+};
+
+/* Master clock specific code. */
+static ulong at91_master_clk_get_rate(struct clk *clk)
+{
+ return gd->arch.mck_rate_hz;
+}
+
+static struct clk_ops at91_master_clk_ops = {
+ .get_rate = at91_master_clk_get_rate,
+};
+
+static const struct udevice_id at91_master_clk_match[] = {
+ { .compatible = "atmel,at91rm9200-clk-master" },
+ { .compatible = "atmel,at91sam9x5-clk-master" },
+ {}
+};
+
+U_BOOT_DRIVER(at91_master_clk) = {
+ .name = "at91-master-clk",
+ .id = UCLASS_CLK,
+ .of_match = at91_master_clk_match,
+ .ops = &at91_master_clk_ops,
+};
+
+/* Main osc clock specific code. */
+static int main_osc_clk_enable(struct clk *clk)
+{
+ struct pmc_platdata *plat = dev_get_platdata(clk->dev);
+ struct at91_pmc *pmc = plat->reg_base;
+
+ if (readl(&pmc->sr) & AT91_PMC_MOSCSELS)
+ return 0;
+
+ return -EINVAL;
+}
+
+static ulong main_osc_clk_get_rate(struct clk *clk)
+{
+ return gd->arch.main_clk_rate_hz;
+}
+
+static struct clk_ops main_osc_clk_ops = {
+ .enable = main_osc_clk_enable,
+ .get_rate = main_osc_clk_get_rate,
+};
+
+static int main_osc_clk_probe(struct udevice *dev)
+{
+ return at91_pmc_core_probe(dev);
+}
+
+static const struct udevice_id main_osc_clk_match[] = {
+ { .compatible = "atmel,at91sam9x5-clk-main" },
+ {}
+};
+
+U_BOOT_DRIVER(at91sam9x5_main_osc_clk) = {
+ .name = "at91sam9x5-main-osc-clk",
+ .id = UCLASS_CLK,
+ .of_match = main_osc_clk_match,
+ .probe = main_osc_clk_probe,
+ .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
+ .ops = &main_osc_clk_ops,
+};
+
+/* PLLA clock specific code. */
+static int plla_clk_enable(struct clk *clk)
+{
+ struct pmc_platdata *plat = dev_get_platdata(clk->dev);
+ struct at91_pmc *pmc = plat->reg_base;
+
+ if (readl(&pmc->sr) & AT91_PMC_LOCKA)
+ return 0;
+
+ return -EINVAL;
+}
+
+static ulong plla_clk_get_rate(struct clk *clk)
+{
+ return gd->arch.plla_rate_hz;
+}
+
+static struct clk_ops plla_clk_ops = {
+ .enable = plla_clk_enable,
+ .get_rate = plla_clk_get_rate,
+};
+
+static int plla_clk_probe(struct udevice *dev)
+{
+ return at91_pmc_core_probe(dev);
+}
+
+static const struct udevice_id plla_clk_match[] = {
+ { .compatible = "atmel,sama5d3-clk-pll" },
+ {}
+};
+
+U_BOOT_DRIVER(at91_plla_clk) = {
+ .name = "at91-plla-clk",
+ .id = UCLASS_CLK,
+ .of_match = plla_clk_match,
+ .probe = plla_clk_probe,
+ .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
+ .ops = &plla_clk_ops,
+};
+
+/* PLLA DIV clock specific code. */
+static int at91_plladiv_clk_enable(struct clk *clk)
+{
+ return 0;
+}
+
+static ulong at91_plladiv_clk_get_rate(struct clk *clk)
+{
+ struct pmc_platdata *plat = dev_get_platdata(clk->dev);
+ struct at91_pmc *pmc = plat->reg_base;
+ struct clk source;
+ ulong clk_rate;
+ int ret;
+
+ ret = clk_get_by_index(clk->dev, 0, &source);
+ if (ret)
+ return -EINVAL;
+
+ clk_rate = clk_get_rate(&source);
+ if (readl(&pmc->mckr) & AT91_PMC_MCKR_PLLADIV_2)
+ clk_rate /= 2;
+
+ return clk_rate;
+}
+
+static ulong at91_plladiv_clk_set_rate(struct clk *clk, ulong rate)
+{
+ struct pmc_platdata *plat = dev_get_platdata(clk->dev);
+ struct at91_pmc *pmc = plat->reg_base;
+ struct clk source;
+ ulong parent_rate;
+ int ret;
+
+ ret = clk_get_by_index(clk->dev, 0, &source);
+ if (ret)
+ return -EINVAL;
+
+ parent_rate = clk_get_rate(&source);
+ if ((parent_rate != rate) && ((parent_rate) / 2 != rate))
+ return -EINVAL;
+
+ if (parent_rate != rate) {
+ writel((readl(&pmc->mckr) | AT91_PMC_MCKR_PLLADIV_2),
+ &pmc->mckr);
+ }
+
+ return 0;
+}
+
+static struct clk_ops at91_plladiv_clk_ops = {
+ .enable = at91_plladiv_clk_enable,
+ .get_rate = at91_plladiv_clk_get_rate,
+ .set_rate = at91_plladiv_clk_set_rate,
+};
+
+static int at91_plladiv_clk_probe(struct udevice *dev)
+{
+ return at91_pmc_core_probe(dev);
+}
+
+static const struct udevice_id at91_plladiv_clk_match[] = {
+ { .compatible = "atmel,at91sam9x5-clk-plldiv" },
+ {}
+};
+
+U_BOOT_DRIVER(at91_plladiv_clk) = {
+ .name = "at91-plladiv-clk",
+ .id = UCLASS_CLK,
+ .of_match = at91_plladiv_clk_match,
+ .probe = at91_plladiv_clk_probe,
+ .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
+ .ops = &at91_plladiv_clk_ops,
+};
+
+/* System clock specific code. */
+#define SYSTEM_MAX_ID 31
+
+/**
+ * at91_system_clk_bind() - for the system clock driver
+ * Recursively bind its children as clk devices.
+ *
+ * @return: 0 on success, or negative error code on failure
+ */
+static int at91_system_clk_bind(struct udevice *dev)
+{
+ return at91_clk_sub_device_bind(dev, "system-clk");
+}
+
+static const struct udevice_id at91_system_clk_match[] = {
+ { .compatible = "atmel,at91rm9200-clk-system" },
+ {}
+};
+
+U_BOOT_DRIVER(at91_system_clk) = {
+ .name = "at91-system-clk",
+ .id = UCLASS_MISC,
+ .of_match = at91_system_clk_match,
+ .bind = at91_system_clk_bind,
+};
+
+static inline int is_pck(int id)
+{
+ return (id >= 8) && (id <= 15);
+}
+
+static ulong system_clk_get_rate(struct clk *clk)
+{
+ struct clk clk_dev;
+ int ret;
+
+ ret = clk_get_by_index(clk->dev, 0, &clk_dev);
+ if (ret)
+ return -EINVAL;
+
+ return clk_get_rate(&clk_dev);
+}
+
+static ulong system_clk_set_rate(struct clk *clk, ulong rate)
+{
+ struct clk clk_dev;
+ int ret;
+
+ ret = clk_get_by_index(clk->dev, 0, &clk_dev);
+ if (ret)
+ return -EINVAL;
+
+ return clk_set_rate(&clk_dev, rate);
+}
+
+static int system_clk_enable(struct clk *clk)
+{
+ struct pmc_platdata *plat = dev_get_platdata(clk->dev);
+ struct at91_pmc *pmc = plat->reg_base;
+ u32 mask;
+
+ if (clk->id > SYSTEM_MAX_ID)
+ return -EINVAL;
+
+ mask = BIT(clk->id);
+
+ writel(mask, &pmc->scer);
+
+ /**
+ * For the programmable clocks the Ready status in the PMC
+ * status register should be checked after enabling.
+ * For other clocks this is unnecessary.
+ */
+ if (!is_pck(clk->id))
+ return 0;
+
+ while (!(readl(&pmc->sr) & mask))
+ ;
+
+ return 0;
+}
+
+static struct clk_ops system_clk_ops = {
+ .of_xlate = at91_clk_of_xlate,
+ .get_rate = system_clk_get_rate,
+ .set_rate = system_clk_set_rate,
+ .enable = system_clk_enable,
+};
+
+U_BOOT_DRIVER(system_clk) = {
+ .name = "system-clk",
+ .id = UCLASS_CLK,
+ .probe = at91_clk_probe,
+ .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
+ .ops = &system_clk_ops,
+};
+
+/* Peripheral clock specific code. */
+#define PERIPHERAL_ID_MIN 2
+#define PERIPHERAL_ID_MAX 31
+#define PERIPHERAL_MASK(id) (1 << ((id) & PERIPHERAL_ID_MAX))
+
+enum periph_clk_type {
+ CLK_PERIPH_AT91RM9200 = 0,
+ CLK_PERIPH_AT91SAM9X5,
+};
+
+/**
+ * sam9x5_periph_clk_bind() - for the periph clock driver
+ * Recursively bind its children as clk devices.
+ *
+ * @return: 0 on success, or negative error code on failure
+ */
+static int sam9x5_periph_clk_bind(struct udevice *dev)
+{
+ return at91_clk_sub_device_bind(dev, "periph-clk");
+}
+
+static const struct udevice_id sam9x5_periph_clk_match[] = {
+ {
+ .compatible = "atmel,at91rm9200-clk-peripheral",
+ .data = CLK_PERIPH_AT91RM9200,
+ },
+ {
+ .compatible = "atmel,at91sam9x5-clk-peripheral",
+ .data = CLK_PERIPH_AT91SAM9X5,
+ },
+ {}
+};
+
+U_BOOT_DRIVER(sam9x5_periph_clk) = {
+ .name = "sam9x5-periph-clk",
+ .id = UCLASS_MISC,
+ .of_match = sam9x5_periph_clk_match,
+ .bind = sam9x5_periph_clk_bind,
+};
+
+static int periph_clk_enable(struct clk *clk)
+{
+ struct pmc_platdata *plat = dev_get_platdata(clk->dev);
+ struct at91_pmc *pmc = plat->reg_base;
+ enum periph_clk_type clk_type;
+ void *addr;
+
+ if (clk->id < PERIPHERAL_ID_MIN)
+ return -1;
+
+ clk_type = dev_get_driver_data(dev_get_parent(clk->dev));
+ if (clk_type == CLK_PERIPH_AT91RM9200) {
+ addr = &pmc->pcer;
+ if (clk->id > PERIPHERAL_ID_MAX)
+ addr = &pmc->pcer1;
+
+ setbits_le32(addr, PERIPHERAL_MASK(clk->id));
+ } else {
+ writel(clk->id & AT91_PMC_PCR_PID_MASK, &pmc->pcr);
+ setbits_le32(&pmc->pcr,
+ AT91_PMC_PCR_CMD_WRITE | AT91_PMC_PCR_EN);
+ }
+
+ return 0;
+}
+
+static ulong periph_get_rate(struct clk *clk)
+{
+ struct udevice *dev;
+ struct clk clk_dev;
+ ulong clk_rate;
+ int ret;
+
+ dev = dev_get_parent(clk->dev);
+
+ ret = clk_get_by_index(dev, 0, &clk_dev);
+ if (ret)
+ return ret;
+
+ clk_rate = clk_get_rate(&clk_dev);
+
+ clk_free(&clk_dev);
+
+ return clk_rate;
+}
+
+static struct clk_ops periph_clk_ops = {
+ .of_xlate = at91_clk_of_xlate,
+ .enable = periph_clk_enable,
+ .get_rate = periph_get_rate,
+};
+
+U_BOOT_DRIVER(clk_periph) = {
+ .name = "periph-clk",
+ .id = UCLASS_CLK,
+ .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
+ .probe = at91_clk_probe,
+ .ops = &periph_clk_ops,
+};
+
+/* UTMI clock specific code. */
+#ifdef CONFIG_AT91_UTMI
+
+/*
+ * The purpose of this clock is to generate a 480 MHz signal. A different
+ * rate can't be configured.
+ */
+#define UTMI_RATE 480000000
+
+static int utmi_clk_enable(struct clk *clk)
+{
+ struct pmc_platdata *plat = dev_get_platdata(clk->dev);
+ struct at91_pmc *pmc = plat->reg_base;
+ struct clk clk_dev;
+ ulong clk_rate;
+ u32 utmi_ref_clk_freq;
+ u32 tmp;
+ int err;
+ int timeout = 2000000;
+
+ if (readl(&pmc->sr) & AT91_PMC_LOCKU)
+ return 0;
+
+ /*
+ * If mainck rate is different from 12 MHz, we have to configure the
+ * FREQ field of the SFR_UTMICKTRIM register to generate properly
+ * the utmi clock.
+ */
+ err = clk_get_by_index(clk->dev, 0, &clk_dev);
+ if (err)
+ return -EINVAL;
+
+ clk_rate = clk_get_rate(&clk_dev);
+ switch (clk_rate) {
+ case 12000000:
+ utmi_ref_clk_freq = 0;
+ break;
+ case 16000000:
+ utmi_ref_clk_freq = 1;
+ break;
+ case 24000000:
+ utmi_ref_clk_freq = 2;
+ break;
+ /*
+ * Not supported on SAMA5D2 but it's not an issue since MAINCK
+ * maximum value is 24 MHz.
+ */
+ case 48000000:
+ utmi_ref_clk_freq = 3;
+ break;
+ default:
+ printf("UTMICK: unsupported mainck rate\n");
+ return -EINVAL;
+ }
+
+ if (plat->regmap_sfr) {
+ err = regmap_read(plat->regmap_sfr, AT91_SFR_UTMICKTRIM, &tmp);
+ if (err)
+ return -EINVAL;
+
+ tmp &= ~AT91_UTMICKTRIM_FREQ;
+ tmp |= utmi_ref_clk_freq;
+ err = regmap_write(plat->regmap_sfr, AT91_SFR_UTMICKTRIM, tmp);
+ if (err)
+ return -EINVAL;
+ } else if (utmi_ref_clk_freq) {
+ printf("UTMICK: sfr node required\n");
+ return -EINVAL;
+ }
+
+ tmp = readl(&pmc->uckr);
+ tmp |= AT91_PMC_UPLLEN |
+ AT91_PMC_UPLLCOUNT |
+ AT91_PMC_BIASEN;
+ writel(tmp, &pmc->uckr);
+
+ while ((--timeout) && !(readl(&pmc->sr) & AT91_PMC_LOCKU))
+ ;
+ if (!timeout) {
+ printf("UTMICK: timeout waiting for UPLL lock\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+static ulong utmi_clk_get_rate(struct clk *clk)
+{
+ /* UTMI clk rate is fixed. */
+ return UTMI_RATE;
+}
+
+static struct clk_ops utmi_clk_ops = {
+ .enable = utmi_clk_enable,
+ .get_rate = utmi_clk_get_rate,
+};
+
+static int utmi_clk_ofdata_to_platdata(struct udevice *dev)
+{
+ struct pmc_platdata *plat = dev_get_platdata(dev);
+ struct udevice *syscon;
+
+ uclass_get_device_by_phandle(UCLASS_SYSCON, dev,
+ "regmap-sfr", &syscon);
+
+ if (syscon)
+ plat->regmap_sfr = syscon_get_regmap(syscon);
+
+ return 0;
+}
+
+static int utmi_clk_probe(struct udevice *dev)
+{
+ return at91_pmc_core_probe(dev);
+}
+
+static const struct udevice_id utmi_clk_match[] = {
+ { .compatible = "atmel,at91sam9x5-clk-utmi" },
+ {}
+};
+
+U_BOOT_DRIVER(at91sam9x5_utmi_clk) = {
+ .name = "at91sam9x5-utmi-clk",
+ .id = UCLASS_CLK,
+ .of_match = utmi_clk_match,
+ .probe = utmi_clk_probe,
+ .ofdata_to_platdata = utmi_clk_ofdata_to_platdata,
+ .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
+ .ops = &utmi_clk_ops,
+};
+
+#endif /* CONFIG_AT91_UTMI */
+
+/* H32MX clock specific code. */
+#ifdef CONFIG_AT91_H32MX
+
+#define H32MX_MAX_FREQ 90000000
+
+static ulong sama5d4_h32mx_clk_get_rate(struct clk *clk)
+{
+ struct pmc_platdata *plat = dev_get_platdata(clk->dev);
+ struct at91_pmc *pmc = plat->reg_base;
+ ulong rate = gd->arch.mck_rate_hz;
+
+ if (readl(&pmc->mckr) & AT91_PMC_MCKR_H32MXDIV)
+ rate /= 2;
+
+ if (rate > H32MX_MAX_FREQ)
+ dev_dbg(clk->dev, "H32MX clock is too fast\n");
+
+ return rate;
+}
+
+static struct clk_ops sama5d4_h32mx_clk_ops = {
+ .get_rate = sama5d4_h32mx_clk_get_rate,
+};
+
+static int sama5d4_h32mx_clk_probe(struct udevice *dev)
+{
+ return at91_pmc_core_probe(dev);
+}
+
+static const struct udevice_id sama5d4_h32mx_clk_match[] = {
+ { .compatible = "atmel,sama5d4-clk-h32mx" },
+ {}
+};
+
+U_BOOT_DRIVER(sama5d4_h32mx_clk) = {
+ .name = "sama5d4-h32mx-clk",
+ .id = UCLASS_CLK,
+ .of_match = sama5d4_h32mx_clk_match,
+ .probe = sama5d4_h32mx_clk_probe,
+ .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
+ .ops = &sama5d4_h32mx_clk_ops,
+};
+
+#endif /* CONFIG_AT91_H32MX */
+
+/* Generic clock specific code. */
+#ifdef CONFIG_AT91_GENERIC_CLK
+
+#define GENERATED_SOURCE_MAX 6
+#define GENERATED_MAX_DIV 255
+
+/**
+ * generated_clk_bind() - for the generated clock driver
+ * Recursively bind its children as clk devices.
+ *
+ * @return: 0 on success, or negative error code on failure
+ */
+static int generated_clk_bind(struct udevice *dev)
+{
+ return at91_clk_sub_device_bind(dev, "generic-clk");
+}
+
+static const struct udevice_id generated_clk_match[] = {
+ { .compatible = "atmel,sama5d2-clk-generated" },
+ {}
+};
+
+U_BOOT_DRIVER(generated_clk) = {
+ .name = "generated-clk",
+ .id = UCLASS_MISC,
+ .of_match = generated_clk_match,
+ .bind = generated_clk_bind,
+};
+
+struct generic_clk_priv {
+ u32 num_parents;
+};
+
+static ulong generic_clk_get_rate(struct clk *clk)
+{
+ struct pmc_platdata *plat = dev_get_platdata(clk->dev);
+ struct at91_pmc *pmc = plat->reg_base;
+ struct clk parent;
+ ulong clk_rate;
+ u32 tmp, gckdiv;
+ u8 clock_source, parent_index;
+ int ret;
+
+ writel(clk->id & AT91_PMC_PCR_PID_MASK, &pmc->pcr);
+ tmp = readl(&pmc->pcr);
+ clock_source = (tmp >> AT91_PMC_PCR_GCKCSS_OFFSET) &
+ AT91_PMC_PCR_GCKCSS_MASK;
+ gckdiv = (tmp >> AT91_PMC_PCR_GCKDIV_OFFSET) & AT91_PMC_PCR_GCKDIV_MASK;
+
+ parent_index = clock_source - 1;
+ ret = clk_get_by_index(dev_get_parent(clk->dev), parent_index, &parent);
+ if (ret)
+ return 0;
+
+ clk_rate = clk_get_rate(&parent) / (gckdiv + 1);
+
+ clk_free(&parent);
+
+ return clk_rate;
+}
+
+static ulong generic_clk_set_rate(struct clk *clk, ulong rate)
+{
+ struct pmc_platdata *plat = dev_get_platdata(clk->dev);
+ struct at91_pmc *pmc = plat->reg_base;
+ struct generic_clk_priv *priv = dev_get_priv(clk->dev);
+ struct clk parent, best_parent;
+ ulong tmp_rate, best_rate = rate, parent_rate;
+ int tmp_diff, best_diff = -1;
+ u32 div, best_div = 0;
+ u8 best_parent_index, best_clock_source = 0;
+ u8 i;
+ u32 tmp;
+ int ret;
+
+ for (i = 0; i < priv->num_parents; i++) {
+ ret = clk_get_by_index(dev_get_parent(clk->dev), i, &parent);
+ if (ret)
+ return ret;
+
+ parent_rate = clk_get_rate(&parent);
+ if (IS_ERR_VALUE(parent_rate))
+ return parent_rate;
+
+ for (div = 1; div < GENERATED_MAX_DIV + 2; div++) {
+ tmp_rate = DIV_ROUND_CLOSEST(parent_rate, div);
+ tmp_diff = abs(rate - tmp_rate);
+
+ if (best_diff < 0 || best_diff > tmp_diff) {
+ best_rate = tmp_rate;
+ best_diff = tmp_diff;
+
+ best_div = div - 1;
+ best_parent = parent;
+ best_parent_index = i;
+ best_clock_source = best_parent_index + 1;
+ }
+
+ if (!best_diff || tmp_rate < rate)
+ break;
+ }
+
+ if (!best_diff)
+ break;
+ }
+
+ debug("GCK: best parent: %s, best_rate = %ld, best_div = %d\n",
+ best_parent.dev->name, best_rate, best_div);
+
+ ret = clk_enable(&best_parent);
+ if (ret)
+ return ret;
+
+ writel(clk->id & AT91_PMC_PCR_PID_MASK, &pmc->pcr);
+ tmp = readl(&pmc->pcr);
+ tmp &= ~(AT91_PMC_PCR_GCKDIV | AT91_PMC_PCR_GCKCSS);
+ tmp |= AT91_PMC_PCR_GCKCSS_(best_clock_source) |
+ AT91_PMC_PCR_CMD_WRITE |
+ AT91_PMC_PCR_GCKDIV_(best_div) |
+ AT91_PMC_PCR_GCKEN;
+ writel(tmp, &pmc->pcr);
+
+ while (!(readl(&pmc->sr) & AT91_PMC_GCKRDY))
+ ;
+
+ return 0;
+}
+
+static struct clk_ops generic_clk_ops = {
+ .of_xlate = at91_clk_of_xlate,
+ .get_rate = generic_clk_get_rate,
+ .set_rate = generic_clk_set_rate,
+};
+
+static int generic_clk_ofdata_to_platdata(struct udevice *dev)
+{
+ struct generic_clk_priv *priv = dev_get_priv(dev);
+ u32 cells[GENERATED_SOURCE_MAX];
+ u32 num_parents;
+
+ num_parents = fdtdec_get_int_array_count(gd->fdt_blob,
+ dev_of_offset(dev_get_parent(dev)), "clocks", cells,
+ GENERATED_SOURCE_MAX);
+
+ if (!num_parents)
+ return -1;
+
+ priv->num_parents = num_parents;
+
+ return 0;
+}
+
+U_BOOT_DRIVER(generic_clk) = {
+ .name = "generic-clk",
+ .id = UCLASS_CLK,
+ .probe = at91_clk_probe,
+ .ofdata_to_platdata = generic_clk_ofdata_to_platdata,
+ .priv_auto_alloc_size = sizeof(struct generic_clk_priv),
+ .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
+ .ops = &generic_clk_ops,
+};
+
+#endif /* CONFIG_AT91_GENERIC_CLK */
+
+/* USB clock specific code. */
+#ifdef CONFIG_AT91_USB_CLK
+
+#define AT91_USB_CLK_SOURCE_MAX 2
+#define AT91_USB_CLK_MAX_DIV 15
+
+struct at91_usb_clk_priv {
+ u32 num_clksource;
+};
+
+static ulong at91_usb_clk_get_rate(struct clk *clk)
+{
+ struct pmc_platdata *plat = dev_get_platdata(clk->dev);
+ struct at91_pmc *pmc = plat->reg_base;
+ struct clk source;
+ u32 tmp, usbdiv;
+ u8 source_index;
+ int ret;
+
+ tmp = readl(&pmc->pcr);
+ source_index = (tmp >> AT91_PMC_USB_USBS_OFFSET) &
+ AT91_PMC_USB_USBS_MASK;
+ usbdiv = (tmp >> AT91_PMC_USB_DIV_OFFSET) & AT91_PMC_USB_DIV_MASK;
+
+ ret = clk_get_by_index(clk->dev, source_index, &source);
+ if (ret)
+ return 0;
+
+ return clk_get_rate(&source) / (usbdiv + 1);
+}
+
+static ulong at91_usb_clk_set_rate(struct clk *clk, ulong rate)
+{
+ struct pmc_platdata *plat = dev_get_platdata(clk->dev);
+ struct at91_pmc *pmc = plat->reg_base;
+ struct at91_usb_clk_priv *priv = dev_get_priv(clk->dev);
+ struct clk source, best_source;
+ ulong tmp_rate, best_rate = rate, source_rate;
+ int tmp_diff, best_diff = -1;
+ u32 div, best_div = 0;
+ u8 best_source_index = 0;
+ u8 i;
+ u32 tmp;
+ int ret;
+
+ for (i = 0; i < priv->num_clksource; i++) {
+ ret = clk_get_by_index(clk->dev, i, &source);
+ if (ret)
+ return ret;
+
+ source_rate = clk_get_rate(&source);
+ if (IS_ERR_VALUE(source_rate))
+ return source_rate;
+
+ for (div = 1; div < AT91_USB_CLK_MAX_DIV + 2; div++) {
+ tmp_rate = DIV_ROUND_CLOSEST(source_rate, div);
+ tmp_diff = abs(rate - tmp_rate);
+
+ if (best_diff < 0 || best_diff > tmp_diff) {
+ best_rate = tmp_rate;
+ best_diff = tmp_diff;
+
+ best_div = div - 1;
+ best_source = source;
+ best_source_index = i;
+ }
+
+ if (!best_diff || tmp_rate < rate)
+ break;
+ }
+
+ if (!best_diff)
+ break;
+ }
+
+ debug("AT91 USB: best sourc: %s, best_rate = %ld, best_div = %d\n",
+ best_source.dev->name, best_rate, best_div);
+
+ ret = clk_enable(&best_source);
+ if (ret)
+ return ret;
+
+ tmp = AT91_PMC_USB_USBS_(best_source_index) |
+ AT91_PMC_USB_DIV_(best_div);
+ writel(tmp, &pmc->usb);
+
+ return 0;
+}
+
+static struct clk_ops at91_usb_clk_ops = {
+ .get_rate = at91_usb_clk_get_rate,
+ .set_rate = at91_usb_clk_set_rate,
+};
+
+static int at91_usb_clk_ofdata_to_platdata(struct udevice *dev)
+{
+ struct at91_usb_clk_priv *priv = dev_get_priv(dev);
+ u32 cells[AT91_USB_CLK_SOURCE_MAX];
+ u32 num_clksource;
+
+ num_clksource = fdtdec_get_int_array_count(gd->fdt_blob,
+ dev_of_offset(dev),
+ "clocks", cells,
+ AT91_USB_CLK_SOURCE_MAX);
+
+ if (!num_clksource)
+ return -1;
+
+ priv->num_clksource = num_clksource;
+
+ return 0;
+}
+
+static int at91_usb_clk_probe(struct udevice *dev)
+{
+ return at91_pmc_core_probe(dev);
+}
+
+static const struct udevice_id at91_usb_clk_match[] = {
+ { .compatible = "atmel,at91sam9x5-clk-usb" },
+ {}
+};
+
+U_BOOT_DRIVER(at91_usb_clk) = {
+ .name = "at91-usb-clk",
+ .id = UCLASS_CLK,
+ .of_match = at91_usb_clk_match,
+ .probe = at91_usb_clk_probe,
+ .ofdata_to_platdata = at91_usb_clk_ofdata_to_platdata,
+ .priv_auto_alloc_size = sizeof(struct at91_usb_clk_priv),
+ .platdata_auto_alloc_size = sizeof(struct pmc_platdata),
+ .ops = &at91_usb_clk_ops,
+};
+
+#endif /* CONFIG_AT91_USB_CLK */
diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c
index ca90abef2d..660e231921 100644
--- a/drivers/clk/at91/pmc.c
+++ b/drivers/clk/at91/pmc.c
@@ -4,119 +4,167 @@
* Wenyou.Yang <wenyou.yang@atmel.com>
*/
-#include <common.h>
+#include <asm/io.h>
#include <clk-uclass.h>
-#include <dm.h>
-#include <log.h>
-#include <dm/lists.h>
-#include <dm/util.h>
+#include <common.h>
+
#include "pmc.h"
-DECLARE_GLOBAL_DATA_PTR;
-
-static const struct udevice_id at91_pmc_match[] = {
- { .compatible = "atmel,at91rm9200-pmc" },
- { .compatible = "atmel,at91sam9260-pmc" },
- { .compatible = "atmel,at91sam9g45-pmc" },
- { .compatible = "atmel,at91sam9n12-pmc" },
- { .compatible = "atmel,at91sam9x5-pmc" },
- { .compatible = "atmel,sama5d3-pmc" },
- { .compatible = "atmel,sama5d2-pmc" },
- {}
-};
+static int at91_clk_of_xlate(struct clk *clk, struct ofnode_phandle_args *args)
+{
+ if (args->args_count != 2) {
+ debug("AT91: clk: Invalid args_count: %d\n", args->args_count);
+ return -EINVAL;
+ }
-U_BOOT_DRIVER(atmel_at91rm9200_pmc) = {
- .name = "atmel_at91rm9200_pmc",
- .id = UCLASS_SIMPLE_BUS,
- .of_match = at91_pmc_match,
-};
+ clk->id = AT91_TO_CLK_ID(args->args[0], args->args[1]);
+
+ return 0;
+}
+
+static ulong at91_clk_get_rate(struct clk *clk)
+{
+ struct clk *c;
+ int ret;
+
+ ret = clk_get_by_id(clk->id, &c);
+ if (ret)
+ return ret;
+
+ return clk_get_rate(c);
+}
+
+static ulong at91_clk_set_rate(struct clk *clk, ulong rate)
+{
+ struct clk *c;
+ int ret;
-U_BOOT_DRIVER_ALIAS(atmel_at91rm9200_pmc, atmel_at91sam9260_pmc)
+ ret = clk_get_by_id(clk->id, &c);
+ if (ret)
+ return ret;
-/*---------------------------------------------------------*/
+ return clk_set_rate(c, rate);
+}
-int at91_pmc_core_probe(struct udevice *dev)
+static int at91_clk_enable(struct clk *clk)
{
- struct pmc_platdata *plat = dev_get_platdata(dev);
+ struct clk *c;
+ int ret;
- dev = dev_get_parent(dev);
+ ret = clk_get_by_id(clk->id, &c);
+ if (ret)
+ return ret;
- plat->reg_base = dev_read_addr_ptr(dev);
+ return clk_enable(c);
+}
- return 0;
+static int at91_clk_disable(struct clk *clk)
+{
+ struct clk *c;
+ int ret;
+
+ ret = clk_get_by_id(clk->id, &c);
+ if (ret)
+ return ret;
+
+ return clk_disable(c);
}
+const struct clk_ops at91_clk_ops = {
+ .of_xlate = at91_clk_of_xlate,
+ .set_rate = at91_clk_set_rate,
+ .get_rate = at91_clk_get_rate,
+ .enable = at91_clk_enable,
+ .disable = at91_clk_disable,
+};
+
/**
- * at91_clk_sub_device_bind() - for the at91 clock driver
- * Recursively bind its children as clk devices.
+ * pmc_read() - read content at address base + off into val
*
- * @return: 0 on success, or negative error code on failure
+ * @base: base address
+ * @off: offset to read from
+ * @val: where the content of base + off is stored
+ *
+ * @return: void
*/
-int at91_clk_sub_device_bind(struct udevice *dev, const char *drv_name)
+void pmc_read(void __iomem *base, unsigned int off, unsigned int *val)
{
- const void *fdt = gd->fdt_blob;
- int offset = dev_of_offset(dev);
- bool pre_reloc_only = !(gd->flags & GD_FLG_RELOC);
- const char *name;
- int ret;
-
- for (offset = fdt_first_subnode(fdt, offset);
- offset > 0;
- offset = fdt_next_subnode(fdt, offset)) {
- if (pre_reloc_only &&
- !ofnode_pre_reloc(offset_to_ofnode(offset)))
- continue;
- /*
- * If this node has "compatible" property, this is not
- * a clock sub-node, but a normal device. skip.
- */
- fdt_get_property(fdt, offset, "compatible", &ret);
- if (ret >= 0)
- continue;
-
- if (ret != -FDT_ERR_NOTFOUND)
- return ret;
-
- name = fdt_get_name(fdt, offset, NULL);
- if (!name)
- return -EINVAL;
- ret = device_bind_driver_to_node(dev, drv_name, name,
- offset_to_ofnode(offset), NULL);
- if (ret)
- return ret;
- }
+ *val = readl(base + off);
+}
- return 0;
+/**
+ * pmc_write() - write content of val at address base + off
+ *
+ * @base: base address
+ * @off: offset to write to
+ * @val: content to be written at base + off
+ *
+ * @return: void
+ */
+void pmc_write(void __iomem *base, unsigned int off, unsigned int val)
+{
+ writel(val, base + off);
}
-int at91_clk_of_xlate(struct clk *clk, struct ofnode_phandle_args *args)
+/**
+ * pmc_update_bits() - update a set of bits at address base + off
+ *
+ * @base: base address
+ * @off: offset to be updated
+ * @mask: mask of bits to be updated
+ * @bits: the new value to be updated
+ *
+ * @return: void
+ */
+void pmc_update_bits(void __iomem *base, unsigned int off,
+ unsigned int mask, unsigned int bits)
{
- int periph;
+ unsigned int tmp;
- if (args->args_count) {
- debug("Invalid args_count: %d\n", args->args_count);
- return -EINVAL;
- }
+ tmp = readl(base + off);
+ tmp &= ~mask;
+ writel(tmp | (bits & mask), base + off);
+}
- periph = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(clk->dev), "reg",
- -1);
- if (periph < 0)
+/**
+ * at91_clk_mux_val_to_index() - get parent index in mux table
+ *
+ * @table: clock mux table
+ * @num_parents: clock number of parents
+ * @val: clock id who's mux index should be retrieved
+ *
+ * @return: clock index in mux table or a negative error number in case of
+ * failure
+ */
+int at91_clk_mux_val_to_index(const u32 *table, u32 num_parents, u32 val)
+{
+ int i;
+
+ if (!table || !num_parents)
return -EINVAL;
- clk->id = periph;
+ for (i = 0; i < num_parents; i++) {
+ if (table[i] == val)
+ return i;
+ }
- return 0;
+ return -EINVAL;
}
-int at91_clk_probe(struct udevice *dev)
+/**
+ * at91_clk_mux_index_to_val() - get parent ID corresponding to an entry in
+ * clock's mux table
+ *
+ * @table: clock's mux table
+ * @num_parents: clock's number of parents
+ * @index: index in mux table which clock's ID should be retrieved
+ *
+ * @return: clock ID or a negative error number in case of failure
+ */
+int at91_clk_mux_index_to_val(const u32 *table, u32 num_parents, u32 index)
{
- struct udevice *dev_periph_container, *dev_pmc;
- struct pmc_platdata *plat = dev_get_platdata(dev);
-
- dev_periph_container = dev_get_parent(dev);
- dev_pmc = dev_get_parent(dev_periph_container);
-
- plat->reg_base = dev_read_addr_ptr(dev_pmc);
+ if (!table || !num_parents || index < 0 || index > num_parents)
+ return -EINVAL;
- return 0;
+ return table[index];
}
diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h
index 517ba1d6b4..a6a714fd22 100644
--- a/drivers/clk/at91/pmc.h
+++ b/drivers/clk/at91/pmc.h
@@ -7,17 +7,141 @@
#ifndef __AT91_PMC_H__
#define __AT91_PMC_H__
-#include <regmap.h>
+#include <linux/bitops.h>
+#include <linux/io.h>
-struct pmc_platdata {
- struct at91_pmc *reg_base;
- struct regmap *regmap_sfr;
+/* Keep a range of 256 available clocks for every clock type. */
+#define AT91_TO_CLK_ID(_t, _i) (((_t) << 8) | ((_i) & 0xff))
+#define AT91_CLK_ID_TO_DID(_i) ((_i) & 0xff)
+
+struct clk_range {
+ unsigned long min;
+ unsigned long max;
+};
+
+struct clk_master_layout {
+ u32 offset;
+ u32 mask;
+ u8 pres_shift;
};
-int at91_pmc_core_probe(struct udevice *dev);
-int at91_clk_sub_device_bind(struct udevice *dev, const char *drv_name);
+extern const struct clk_master_layout at91rm9200_master_layout;
+extern const struct clk_master_layout at91sam9x5_master_layout;
+
+struct clk_master_characteristics {
+ struct clk_range output;
+ u32 divisors[4];
+ u8 have_div3_pres;
+};
+
+struct clk_pll_characteristics {
+ struct clk_range input;
+ int num_output;
+ const struct clk_range *output;
+ u16 *icpll;
+ u8 *out;
+ u8 upll : 1;
+};
+
+struct clk_pll_layout {
+ u32 pllr_mask;
+ u32 mul_mask;
+ u32 frac_mask;
+ u32 div_mask;
+ u32 endiv_mask;
+ u8 mul_shift;
+ u8 frac_shift;
+ u8 div_shift;
+ u8 endiv_shift;
+};
+
+struct clk_programmable_layout {
+ u8 pres_mask;
+ u8 pres_shift;
+ u8 css_mask;
+ u8 have_slck_mck;
+ u8 is_pres_direct;
+};
+
+struct clk_pcr_layout {
+ u32 offset;
+ u32 cmd;
+ u32 div_mask;
+ u32 gckcss_mask;
+ u32 pid_mask;
+};
+
+extern const struct clk_programmable_layout at91rm9200_programmable_layout;
+extern const struct clk_programmable_layout at91sam9g45_programmable_layout;
+extern const struct clk_programmable_layout at91sam9x5_programmable_layout;
+
+extern const struct clk_ops at91_clk_ops;
+
+struct clk *at91_clk_main_rc(void __iomem *reg, const char *name,
+ const char *parent_name);
+struct clk *at91_clk_main_osc(void __iomem *reg, const char *name,
+ const char *parent_name, bool bypass);
+struct clk *at91_clk_rm9200_main(void __iomem *reg, const char *name,
+ const char *parent_name);
+struct clk *at91_clk_sam9x5_main(void __iomem *reg, const char *name,
+ const char * const *parent_names, int num_parents,
+ const u32 *mux_table, int type);
+struct clk *
+sam9x60_clk_register_div_pll(void __iomem *base, const char *name,
+ const char *parent_name, u8 id,
+ const struct clk_pll_characteristics *characteristics,
+ const struct clk_pll_layout *layout, bool critical);
+struct clk *
+sam9x60_clk_register_frac_pll(void __iomem *base, const char *name,
+ const char *parent_name, u8 id,
+ const struct clk_pll_characteristics *characteristics,
+ const struct clk_pll_layout *layout, bool critical);
+struct clk *
+at91_clk_register_master(void __iomem *base, const char *name,
+ const char * const *parent_names, int num_parents,
+ const struct clk_master_layout *layout,
+ const struct clk_master_characteristics *characteristics,
+ const u32 *mux_table);
+struct clk *
+at91_clk_sama7g5_register_master(void __iomem *base, const char *name,
+ const char * const *parent_names, int num_parents,
+ const u32 *mux_table, const u32 *clk_mux_table,
+ bool critical, u8 id);
+struct clk *
+at91_clk_register_utmi(void __iomem *base, struct udevice *dev,
+ const char *name, const char *parent_name);
+struct clk *
+at91_clk_sama7g5_register_utmi(void __iomem *base, const char *name,
+ const char *parent_name);
+struct clk *
+at91_clk_register_programmable(void __iomem *base, const char *name,
+ const char * const *parent_names, u8 num_parents, u8 id,
+ const struct clk_programmable_layout *layout,
+ const u32 *clk_mux_table, const u32 *mux_table);
+struct clk *
+at91_clk_register_system(void __iomem *base, const char *name,
+ const char *parent_name, u8 id);
+struct clk *
+at91_clk_register_peripheral(void __iomem *base, const char *name,
+ const char *parent_name, u32 id);
+struct clk *
+at91_clk_register_sam9x5_peripheral(void __iomem *base,
+ const struct clk_pcr_layout *layout,
+ const char *name, const char *parent_name,
+ u32 id, const struct clk_range *range);
+struct clk *
+at91_clk_register_generic(void __iomem *base,
+ const struct clk_pcr_layout *layout, const char *name,
+ const char * const *parent_names,
+ const u32 *clk_mux_table, const u32 *mux_table,
+ u8 num_parents, u8 id, const struct clk_range *range);
+
+int at91_clk_mux_val_to_index(const u32 *table, u32 num_parents, u32 val);
+int at91_clk_mux_index_to_val(const u32 *table, u32 num_parents, u32 index);
-int at91_clk_of_xlate(struct clk *clk, struct ofnode_phandle_args *args);
-int at91_clk_probe(struct udevice *dev);
+void pmc_read(void __iomem *base, unsigned int off, unsigned int *val);
+void pmc_write(void __iomem *base, unsigned int off, unsigned int val);
+void pmc_update_bits(void __iomem *base, unsigned int off, unsigned int mask,
+ unsigned int bits);
#endif
diff --git a/drivers/clk/at91/sama7g5.c b/drivers/clk/at91/sama7g5.c
new file mode 100644
index 0000000000..b96937673b
--- /dev/null
+++ b/drivers/clk/at91/sama7g5.c
@@ -0,0 +1,1401 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * SAMA7G5 PMC clock support.
+ *
+ * Copyright (C) 2020 Microchip Technology Inc. and its subsidiaries
+ *
+ * Author: Claudiu Beznea <claudiu.beznea@microchip.com>
+ *
+ * Based on drivers/clk/at91/sama7g5.c from Linux.
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <dt-bindings/clk/at91.h>
+#include <linux/clk-provider.h>
+
+#include "pmc.h"
+
+/**
+ * Clock identifiers to be used in conjunction with macros like
+ * AT91_TO_CLK_ID()
+ *
+ * @ID_MD_SLCK: TD slow clock identifier
+ * @ID_TD_SLCK: MD slow clock identifier
+ * @ID_MAIN_XTAL: Main Xtal clock identifier
+ * @ID_MAIN_RC: Main RC clock identifier
+ * @ID_MAIN_RC_OSC: Main RC Oscillator clock identifier
+ * @ID_MAIN_OSC: Main Oscillator clock identifier
+ * @ID_MAINCK: MAINCK clock identifier
+ * @ID_PLL_CPU_FRAC: CPU PLL fractional clock identifier
+ * @ID_PLL_CPU_DIV: CPU PLL divider clock identifier
+ * @ID_PLL_SYS_FRAC: SYS PLL fractional clock identifier
+ * @ID_PLL_SYS_DIV: SYS PLL divider clock identifier
+ * @ID_PLL_DDR_FRAC: DDR PLL fractional clock identifier
+ * @ID_PLL_DDR_DIV: DDR PLL divider clock identifier
+ * @ID_PLL_IMG_FRAC: IMC PLL fractional clock identifier
+ * @ID_PLL_IMG_DIV: IMG PLL divider clock identifier
+ * @ID_PLL_BAUD_FRAC: Baud PLL fractional clock identifier
+ * @ID_PLL_BAUD_DIV: Baud PLL divider clock identifier
+ * @ID_PLL_AUDIO_FRAC: Audio PLL fractional clock identifier
+ * @ID_PLL_AUDIO_DIVPMC: Audio PLL PMC divider clock identifier
+ * @ID_PLL_AUDIO_DIVIO: Audio PLL IO divider clock identifier
+ * @ID_PLL_ETH_FRAC: Ethernet PLL fractional clock identifier
+ * @ID_PLL_ETH_DIV: Ethernet PLL divider clock identifier
+
+ * @ID_MCK0: MCK0 clock identifier
+ * @ID_MCK1: MCK1 clock identifier
+ * @ID_MCK2: MCK2 clock identifier
+ * @ID_MCK3: MCK3 clock identifier
+ * @ID_MCK4: MCK4 clock identifier
+
+ * @ID_UTMI: UTMI clock identifier
+
+ * @ID_PROG0: Programmable 0 clock identifier
+ * @ID_PROG1: Programmable 1 clock identifier
+ * @ID_PROG2: Programmable 2 clock identifier
+ * @ID_PROG3: Programmable 3 clock identifier
+ * @ID_PROG4: Programmable 4 clock identifier
+ * @ID_PROG5: Programmable 5 clock identifier
+ * @ID_PROG6: Programmable 6 clock identifier
+ * @ID_PROG7: Programmable 7 clock identifier
+
+ * @ID_PCK0: System clock 0 clock identifier
+ * @ID_PCK1: System clock 1 clock identifier
+ * @ID_PCK2: System clock 2 clock identifier
+ * @ID_PCK3: System clock 3 clock identifier
+ * @ID_PCK4: System clock 4 clock identifier
+ * @ID_PCK5: System clock 5 clock identifier
+ * @ID_PCK6: System clock 6 clock identifier
+ * @ID_PCK7: System clock 7 clock identifier
+ */
+enum pmc_clk_ids {
+ ID_MD_SLCK = 0,
+ ID_TD_SLCK = 1,
+ ID_MAIN_XTAL = 2,
+ ID_MAIN_RC = 3,
+ ID_MAIN_RC_OSC = 4,
+ ID_MAIN_OSC = 5,
+ ID_MAINCK = 6,
+
+ ID_PLL_CPU_FRAC = 7,
+ ID_PLL_CPU_DIV = 8,
+ ID_PLL_SYS_FRAC = 9,
+ ID_PLL_SYS_DIV = 10,
+ ID_PLL_DDR_FRAC = 11,
+ ID_PLL_DDR_DIV = 12,
+ ID_PLL_IMG_FRAC = 13,
+ ID_PLL_IMG_DIV = 14,
+ ID_PLL_BAUD_FRAC = 15,
+ ID_PLL_BAUD_DIV = 16,
+ ID_PLL_AUDIO_FRAC = 17,
+ ID_PLL_AUDIO_DIVPMC = 18,
+ ID_PLL_AUDIO_DIVIO = 19,
+ ID_PLL_ETH_FRAC = 20,
+ ID_PLL_ETH_DIV = 21,
+
+ ID_MCK0 = 22,
+ ID_MCK1 = 23,
+ ID_MCK2 = 24,
+ ID_MCK3 = 25,
+ ID_MCK4 = 26,
+
+ ID_UTMI = 27,
+
+ ID_PROG0 = 28,
+ ID_PROG1 = 29,
+ ID_PROG2 = 30,
+ ID_PROG3 = 31,
+ ID_PROG4 = 32,
+ ID_PROG5 = 33,
+ ID_PROG6 = 34,
+ ID_PROG7 = 35,
+
+ ID_PCK0 = 36,
+ ID_PCK1 = 37,
+ ID_PCK2 = 38,
+ ID_PCK3 = 39,
+ ID_PCK4 = 40,
+ ID_PCK5 = 41,
+ ID_PCK6 = 42,
+ ID_PCK7 = 43,
+
+ ID_MAX,
+};
+
+/**
+ * PLL type identifiers
+ * @PLL_TYPE_FRAC: fractional PLL identifier
+ * @PLL_TYPE_DIV: divider PLL identifier
+ */
+enum pll_type {
+ PLL_TYPE_FRAC,
+ PLL_TYPE_DIV,
+};
+
+/* Clock names used as parents for multiple clocks. */
+static const char *clk_names[] = {
+ [ID_MAIN_RC_OSC] = "main_rc_osc",
+ [ID_MAIN_OSC] = "main_osc",
+ [ID_MAINCK] = "mainck",
+ [ID_PLL_CPU_DIV] = "cpupll_divpmcck",
+ [ID_PLL_SYS_DIV] = "syspll_divpmcck",
+ [ID_PLL_DDR_DIV] = "ddrpll_divpmcck",
+ [ID_PLL_IMG_DIV] = "imgpll_divpmcck",
+ [ID_PLL_BAUD_DIV] = "baudpll_divpmcck",
+ [ID_PLL_AUDIO_DIVPMC] = "audiopll_divpmcck",
+ [ID_PLL_AUDIO_DIVIO] = "audiopll_diviock",
+ [ID_PLL_ETH_DIV] = "ethpll_divpmcck",
+ [ID_MCK0] = "mck0",
+};
+
+/* Fractional PLL output range. */
+static const struct clk_range pll_outputs[] = {
+ { .min = 2343750, .max = 1200000000 },
+};
+
+/* PLL characteristics. */
+static const struct clk_pll_characteristics pll_characteristics = {
+ .input = { .min = 12000000, .max = 50000000 },
+ .num_output = ARRAY_SIZE(pll_outputs),
+ .output = pll_outputs,
+};
+
+/* Layout for fractional PLLs. */
+static const struct clk_pll_layout pll_layout_frac = {
+ .mul_mask = GENMASK(31, 24),
+ .frac_mask = GENMASK(21, 0),
+ .mul_shift = 24,
+ .frac_shift = 0,
+};
+
+/* Layout for DIVPMC dividers. */
+static const struct clk_pll_layout pll_layout_divpmc = {
+ .div_mask = GENMASK(7, 0),
+ .endiv_mask = BIT(29),
+ .div_shift = 0,
+ .endiv_shift = 29,
+};
+
+/* Layout for DIVIO dividers. */
+static const struct clk_pll_layout pll_layout_divio = {
+ .div_mask = GENMASK(19, 12),
+ .endiv_mask = BIT(30),
+ .div_shift = 12,
+ .endiv_shift = 30,
+};
+
+/* MCK0 characteristics. */
+static const struct clk_master_characteristics mck0_characteristics = {
+ .output = { .min = 140000000, .max = 200000000 },
+ .divisors = { 1, 2, 4, 3 },
+ .have_div3_pres = 1,
+};
+
+/* MCK0 layout. */
+static const struct clk_master_layout mck0_layout = {
+ .mask = 0x373,
+ .pres_shift = 4,
+ .offset = 0x28,
+};
+
+/* Programmable clock layout. */
+static const struct clk_programmable_layout programmable_layout = {
+ .pres_mask = 0xff,
+ .pres_shift = 8,
+ .css_mask = 0x1f,
+ .have_slck_mck = 0,
+ .is_pres_direct = 1,
+};
+
+/* Peripheral clock layout. */
+static const struct clk_pcr_layout sama7g5_pcr_layout = {
+ .offset = 0x88,
+ .cmd = BIT(31),
+ .gckcss_mask = GENMASK(12, 8),
+ .pid_mask = GENMASK(6, 0),
+ .div_mask = GENMASK(15, 14),
+};
+
+/**
+ * PLL clocks description
+ * @n: clock name
+ * @p: clock parent
+ * @l: clock layout
+ * @t: clock type
+ * @c: true if clock is critical and cannot be disabled
+ * @id: clock id corresponding to PLL driver
+ * @cid: clock id corresponding to clock subsystem
+ */
+static const struct {
+ const char *n;
+ const char *p;
+ const struct clk_pll_layout *l;
+ u8 t;
+ u8 c;
+ u8 id;
+ u8 cid;
+} sama7g5_plls[] = {
+ {
+ .n = "cpupll_fracck",
+ .p = "mainck",
+ .l = &pll_layout_frac,
+ .t = PLL_TYPE_FRAC,
+ .c = 1,
+ .id = 0,
+ .cid = ID_PLL_CPU_FRAC,
+ },
+
+ {
+ .n = "cpupll_divpmcck",
+ .p = "cpupll_fracck",
+ .l = &pll_layout_divpmc,
+ .t = PLL_TYPE_DIV,
+ .c = 1,
+ .id = 0,
+ .cid = ID_PLL_CPU_DIV,
+ },
+
+ {
+ .n = "syspll_fracck",
+ .p = "mainck",
+ .l = &pll_layout_frac,
+ .t = PLL_TYPE_FRAC,
+ .c = 1,
+ .id = 1,
+ .cid = ID_PLL_SYS_FRAC,
+ },
+
+ {
+ .n = "syspll_divpmcck",
+ .p = "syspll_fracck",
+ .l = &pll_layout_divpmc,
+ .t = PLL_TYPE_DIV,
+ .c = 1,
+ .id = 1,
+ .cid = ID_PLL_SYS_DIV,
+ },
+
+ {
+ .n = "ddrpll_fracck",
+ .p = "mainck",
+ .l = &pll_layout_frac,
+ .t = PLL_TYPE_FRAC,
+ .c = 1,
+ .id = 2,
+ .cid = ID_PLL_DDR_FRAC,
+ },
+
+ {
+ .n = "ddrpll_divpmcck",
+ .p = "ddrpll_fracck",
+ .l = &pll_layout_divpmc,
+ .t = PLL_TYPE_DIV,
+ .c = 1,
+ .id = 2,
+ .cid = ID_PLL_DDR_DIV,
+ },
+
+ {
+ .n = "imgpll_fracck",
+ .p = "mainck",
+ .l = &pll_layout_frac,
+ .t = PLL_TYPE_FRAC,
+ .id = 3,
+ .cid = ID_PLL_IMG_FRAC,
+ },
+
+ {
+ .n = "imgpll_divpmcck",
+ .p = "imgpll_fracck",
+ .l = &pll_layout_divpmc,
+ .t = PLL_TYPE_DIV,
+ .id = 3,
+ .cid = ID_PLL_IMG_DIV
+ },
+
+ {
+ .n = "baudpll_fracck",
+ .p = "mainck",
+ .l = &pll_layout_frac,
+ .t = PLL_TYPE_FRAC,
+ .id = 4,
+ .cid = ID_PLL_BAUD_FRAC,
+ },
+
+ {
+ .n = "baudpll_divpmcck",
+ .p = "baudpll_fracck",
+ .l = &pll_layout_divpmc,
+ .t = PLL_TYPE_DIV,
+ .id = 4,
+ .cid = ID_PLL_BAUD_DIV,
+ },
+
+ {
+ .n = "audiopll_fracck",
+ .p = "main_osc",
+ .l = &pll_layout_frac,
+ .t = PLL_TYPE_FRAC,
+ .id = 5,
+ .cid = ID_PLL_AUDIO_FRAC,
+ },
+
+ {
+ .n = "audiopll_divpmcck",
+ .p = "audiopll_fracck",
+ .l = &pll_layout_divpmc,
+ .t = PLL_TYPE_DIV,
+ .id = 5,
+ .cid = ID_PLL_AUDIO_DIVPMC,
+ },
+
+ {
+ .n = "audiopll_diviock",
+ .p = "audiopll_fracck",
+ .l = &pll_layout_divio,
+ .t = PLL_TYPE_DIV,
+ .id = 5,
+ .cid = ID_PLL_AUDIO_DIVIO,
+ },
+
+ {
+ .n = "ethpll_fracck",
+ .p = "main_osc",
+ .l = &pll_layout_frac,
+ .t = PLL_TYPE_FRAC,
+ .id = 6,
+ .cid = ID_PLL_ETH_FRAC,
+ },
+
+ {
+ .n = "ethpll_divpmcck",
+ .p = "ethpll_fracck",
+ .l = &pll_layout_divpmc,
+ .t = PLL_TYPE_DIV,
+ .id = 6,
+ .cid = ID_PLL_ETH_DIV,
+ },
+};
+
+/**
+ * Master clock (MCK[1..4]) description
+ * @n: clock name
+ * @ep: extra parents names array
+ * @ep_chg_chg_id: index in parents array that specifies the changeable
+ * parent
+ * @ep_count: extra parents count
+ * @ep_mux_table: mux table for extra parents
+ * @ep_clk_mux_table: mux table to deal with subsystem clock ids
+ * @id: clock id corresponding to MCK driver
+ * @cid: clock id corresponding to clock subsystem
+ * @c: true if clock is critical and cannot be disabled
+ */
+static const struct {
+ const char *n;
+ const char *ep[4];
+ u8 ep_count;
+ u8 ep_mux_table[4];
+ u8 ep_clk_mux_table[4];
+ u8 id;
+ u8 cid;
+ u8 c;
+} sama7g5_mckx[] = {
+ {
+ .n = "mck1",
+ .id = 1,
+ .cid = ID_MCK1,
+ .ep = { "syspll_divpmcck", },
+ .ep_mux_table = { 5, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, },
+ .ep_count = 1,
+ .c = 1,
+ },
+
+ {
+ .n = "mck2",
+ .id = 2,
+ .cid = ID_MCK2,
+ .ep = { "ddrpll_divpmcck", },
+ .ep_mux_table = { 6, },
+ .ep_clk_mux_table = { ID_PLL_DDR_DIV, },
+ .ep_count = 1,
+ .c = 1,
+ },
+
+ {
+ .n = "mck3",
+ .id = 3,
+ .cid = ID_MCK3,
+ .ep = { "syspll_divpmcck", "ddrpll_divpmcck", "imgpll_divpmcck", },
+ .ep_mux_table = { 5, 6, 7, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_DDR_DIV, ID_PLL_IMG_DIV, },
+ .ep_count = 3,
+ },
+
+ {
+ .n = "mck4",
+ .id = 4,
+ .cid = ID_MCK4,
+ .ep = { "syspll_divpmcck", },
+ .ep_mux_table = { 5, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, },
+ .ep_count = 1,
+ .c = 1,
+ },
+};
+
+/**
+ * Programmable clock description
+ * @n: clock name
+ * @cid: clock id corresponding to clock subsystem
+ */
+static const struct {
+ const char *n;
+ u8 cid;
+} sama7g5_prog[] = {
+ { .n = "prog0", .cid = ID_PROG0, },
+ { .n = "prog1", .cid = ID_PROG1, },
+ { .n = "prog2", .cid = ID_PROG2, },
+ { .n = "prog3", .cid = ID_PROG3, },
+ { .n = "prog4", .cid = ID_PROG4, },
+ { .n = "prog5", .cid = ID_PROG5, },
+ { .n = "prog6", .cid = ID_PROG6, },
+ { .n = "prog7", .cid = ID_PROG7, },
+};
+
+/* Mux table for programmable clocks. */
+static u32 sama7g5_prog_mux_table[] = { 0, 1, 2, 3, 5, 6, 7, 8, 9, 10, };
+
+/**
+ * System clock description
+ * @n: clock name
+ * @p: parent clock name
+ * @id: clock id corresponding to system clock driver
+ * @cid: clock id corresponding to clock subsystem
+ */
+static const struct {
+ const char *n;
+ const char *p;
+ u8 id;
+ u8 cid;
+} sama7g5_systemck[] = {
+ { .n = "pck0", .p = "prog0", .id = 8, .cid = ID_PCK0, },
+ { .n = "pck1", .p = "prog1", .id = 9, .cid = ID_PCK1, },
+ { .n = "pck2", .p = "prog2", .id = 10, .cid = ID_PCK2, },
+ { .n = "pck3", .p = "prog3", .id = 11, .cid = ID_PCK3, },
+ { .n = "pck4", .p = "prog4", .id = 12, .cid = ID_PCK4, },
+ { .n = "pck5", .p = "prog5", .id = 13, .cid = ID_PCK5, },
+ { .n = "pck6", .p = "prog6", .id = 14, .cid = ID_PCK6, },
+ { .n = "pck7", .p = "prog7", .id = 15, .cid = ID_PCK7, },
+};
+
+/**
+ * Peripheral clock description
+ * @n: clock name
+ * @p: clock parent name
+ * @r: clock range values
+ * @id: clock id
+ */
+static const struct {
+ const char *n;
+ const char *p;
+ struct clk_range r;
+ u8 id;
+} sama7g5_periphck[] = {
+ { .n = "pioA_clk", .p = "mck0", .id = 11, },
+ { .n = "sfr_clk", .p = "mck1", .id = 19, },
+ { .n = "hsmc_clk", .p = "mck1", .id = 21, },
+ { .n = "xdmac0_clk", .p = "mck1", .id = 22, },
+ { .n = "xdmac1_clk", .p = "mck1", .id = 23, },
+ { .n = "xdmac2_clk", .p = "mck1", .id = 24, },
+ { .n = "acc_clk", .p = "mck1", .id = 25, },
+ { .n = "aes_clk", .p = "mck1", .id = 27, },
+ { .n = "tzaesbasc_clk", .p = "mck1", .id = 28, },
+ { .n = "asrc_clk", .p = "mck1", .id = 30, .r = { .max = 200000000, }, },
+ { .n = "cpkcc_clk", .p = "mck0", .id = 32, },
+ { .n = "csi_clk", .p = "mck3", .id = 33, .r = { .max = 266000000, }, },
+ { .n = "csi2dc_clk", .p = "mck3", .id = 34, .r = { .max = 266000000, }, },
+ { .n = "eic_clk", .p = "mck1", .id = 37, },
+ { .n = "flex0_clk", .p = "mck1", .id = 38, },
+ { .n = "flex1_clk", .p = "mck1", .id = 39, },
+ { .n = "flex2_clk", .p = "mck1", .id = 40, },
+ { .n = "flex3_clk", .p = "mck1", .id = 41, },
+ { .n = "flex4_clk", .p = "mck1", .id = 42, },
+ { .n = "flex5_clk", .p = "mck1", .id = 43, },
+ { .n = "flex6_clk", .p = "mck1", .id = 44, },
+ { .n = "flex7_clk", .p = "mck1", .id = 45, },
+ { .n = "flex8_clk", .p = "mck1", .id = 46, },
+ { .n = "flex9_clk", .p = "mck1", .id = 47, },
+ { .n = "flex10_clk", .p = "mck1", .id = 48, },
+ { .n = "flex11_clk", .p = "mck1", .id = 49, },
+ { .n = "gmac0_clk", .p = "mck1", .id = 51, },
+ { .n = "gmac1_clk", .p = "mck1", .id = 52, },
+ { .n = "gmac0_tsu_clk", .p = "mck1", .id = 53, },
+ { .n = "gmac1_tsu_clk", .p = "mck1", .id = 54, },
+ { .n = "icm_clk", .p = "mck1", .id = 55, },
+ { .n = "isc_clk", .p = "mck3", .id = 56, .r = { .max = 266000000, }, },
+ { .n = "i2smcc0_clk", .p = "mck1", .id = 57, .r = { .max = 200000000, }, },
+ { .n = "i2smcc1_clk", .p = "mck1", .id = 58, .r = { .max = 200000000, }, },
+ { .n = "matrix_clk", .p = "mck1", .id = 60, },
+ { .n = "mcan0_clk", .p = "mck1", .id = 61, .r = { .max = 200000000, }, },
+ { .n = "mcan1_clk", .p = "mck1", .id = 62, .r = { .max = 200000000, }, },
+ { .n = "mcan2_clk", .p = "mck1", .id = 63, .r = { .max = 200000000, }, },
+ { .n = "mcan3_clk", .p = "mck1", .id = 64, .r = { .max = 200000000, }, },
+ { .n = "mcan4_clk", .p = "mck1", .id = 65, .r = { .max = 200000000, }, },
+ { .n = "mcan5_clk", .p = "mck1", .id = 66, .r = { .max = 200000000, }, },
+ { .n = "pdmc0_clk", .p = "mck1", .id = 68, .r = { .max = 200000000, }, },
+ { .n = "pdmc1_clk", .p = "mck1", .id = 69, .r = { .max = 200000000, }, },
+ { .n = "pit64b0_clk", .p = "mck1", .id = 70, },
+ { .n = "pit64b1_clk", .p = "mck1", .id = 71, },
+ { .n = "pit64b2_clk", .p = "mck1", .id = 72, },
+ { .n = "pit64b3_clk", .p = "mck1", .id = 73, },
+ { .n = "pit64b4_clk", .p = "mck1", .id = 74, },
+ { .n = "pit64b5_clk", .p = "mck1", .id = 75, },
+ { .n = "pwm_clk", .p = "mck1", .id = 77, },
+ { .n = "qspi0_clk", .p = "mck1", .id = 78, },
+ { .n = "qspi1_clk", .p = "mck1", .id = 79, },
+ { .n = "sdmmc0_clk", .p = "mck1", .id = 80, },
+ { .n = "sdmmc1_clk", .p = "mck1", .id = 81, },
+ { .n = "sdmmc2_clk", .p = "mck1", .id = 82, },
+ { .n = "sha_clk", .p = "mck1", .id = 83, },
+ { .n = "spdifrx_clk", .p = "mck1", .id = 84, .r = { .max = 200000000, }, },
+ { .n = "spdiftx_clk", .p = "mck1", .id = 85, .r = { .max = 200000000, }, },
+ { .n = "ssc0_clk", .p = "mck1", .id = 86, .r = { .max = 200000000, }, },
+ { .n = "ssc1_clk", .p = "mck1", .id = 87, .r = { .max = 200000000, }, },
+ { .n = "tcb0_ch0_clk", .p = "mck1", .id = 88, .r = { .max = 200000000, }, },
+ { .n = "tcb0_ch1_clk", .p = "mck1", .id = 89, .r = { .max = 200000000, }, },
+ { .n = "tcb0_ch2_clk", .p = "mck1", .id = 90, .r = { .max = 200000000, }, },
+ { .n = "tcb1_ch0_clk", .p = "mck1", .id = 91, .r = { .max = 200000000, }, },
+ { .n = "tcb1_ch1_clk", .p = "mck1", .id = 92, .r = { .max = 200000000, }, },
+ { .n = "tcb1_ch2_clk", .p = "mck1", .id = 93, .r = { .max = 200000000, }, },
+ { .n = "tcpca_clk", .p = "mck1", .id = 94, },
+ { .n = "tcpcb_clk", .p = "mck1", .id = 95, },
+ { .n = "tdes_clk", .p = "mck1", .id = 96, },
+ { .n = "trng_clk", .p = "mck1", .id = 97, },
+ { .n = "udphsa_clk", .p = "mck1", .id = 104, },
+ { .n = "udphsb_clk", .p = "mck1", .id = 105, },
+ { .n = "uhphs_clk", .p = "mck1", .id = 106, },
+};
+
+/**
+ * Generic clock description
+ * @n: clock name
+ * @ep: extra parents names
+ * @ep_mux_table: extra parents mux table
+ * @ep_clk_mux_table: extra parents clock mux table (for CCF)
+ * @r: clock output range
+ * @ep_count: extra parents count
+ * @id: clock id
+ */
+static const struct {
+ const char *n;
+ const char *ep[8];
+ const char ep_mux_table[8];
+ const char ep_clk_mux_table[8];
+ struct clk_range r;
+ u8 ep_count;
+ u8 id;
+} sama7g5_gck[] = {
+ {
+ .n = "adc_gclk",
+ .id = 26,
+ .r = { .max = 100000000, },
+ .ep = { "syspll_divpmcck", "imgpll_divpmcck", "audiopll_divpmcck", },
+ .ep_mux_table = { 5, 7, 9, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_IMG_DIV,
+ ID_PLL_AUDIO_DIVPMC, },
+ .ep_count = 3,
+ },
+
+ {
+ .n = "asrc_gclk",
+ .id = 30,
+ .r = { .max = 200000000 },
+ .ep = { "audiopll_divpmcck", },
+ .ep_mux_table = { 9, },
+ .ep_clk_mux_table = { ID_PLL_AUDIO_DIVPMC, },
+ .ep_count = 1,
+ },
+
+ {
+ .n = "csi_gclk",
+ .id = 33,
+ .r = { .max = 27000000 },
+ .ep = { "ddrpll_divpmcck", "imgpll_divpmcck", },
+ .ep_clk_mux_table = { ID_PLL_DDR_DIV, ID_PLL_IMG_DIV, },
+ .ep_mux_table = { 6, 7, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "flex0_gclk",
+ .id = 38,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "flex1_gclk",
+ .id = 39,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "flex2_gclk",
+ .id = 40,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "flex3_gclk",
+ .id = 41,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "flex4_gclk",
+ .id = 42,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "flex5_gclk",
+ .id = 43,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "flex6_gclk",
+ .id = 44,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "flex7_gclk",
+ .id = 45,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "flex8_gclk",
+ .id = 46,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "flex9_gclk",
+ .id = 47,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "flex10_gclk",
+ .id = 48,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "flex11_gclk",
+ .id = 49,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "gmac0_gclk",
+ .id = 51,
+ .r = { .max = 125000000 },
+ .ep = { "ethpll_divpmcck", },
+ .ep_clk_mux_table = { ID_PLL_ETH_DIV, },
+ .ep_mux_table = { 10, },
+ .ep_count = 1,
+ },
+
+ {
+ .n = "gmac1_gclk",
+ .id = 52,
+ .r = { .max = 50000000 },
+ .ep = { "ethpll_divpmcck", },
+ .ep_mux_table = { 10, },
+ .ep_clk_mux_table = { ID_PLL_ETH_DIV, },
+ .ep_count = 1,
+ },
+
+ {
+ .n = "gmac0_tsu_gclk",
+ .id = 53,
+ .r = { .max = 300000000 },
+ .ep = { "audiopll_divpmcck", "ethpll_divpmcck", },
+ .ep_mux_table = { 9, 10, },
+ .ep_clk_mux_table = { ID_PLL_AUDIO_DIVPMC, ID_PLL_ETH_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "gmac1_tsu_gclk",
+ .id = 54,
+ .r = { .max = 300000000 },
+ .ep = { "audiopll_divpmcck", "ethpll_divpmcck", },
+ .ep_mux_table = { 9, 10, },
+ .ep_clk_mux_table = { ID_PLL_AUDIO_DIVPMC, ID_PLL_ETH_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "i2smcc0_gclk",
+ .id = 57,
+ .r = { .max = 100000000 },
+ .ep = { "syspll_divpmcck", "audiopll_divpmcck", },
+ .ep_mux_table = { 5, 9, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_AUDIO_DIVPMC, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "i2smcc1_gclk",
+ .id = 58,
+ .r = { .max = 100000000 },
+ .ep = { "syspll_divpmcck", "audiopll_divpmcck", },
+ .ep_mux_table = { 5, 9, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_AUDIO_DIVPMC, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "mcan0_gclk",
+ .id = 61,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "mcan1_gclk",
+ .id = 62,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "mcan2_gclk",
+ .id = 63,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "mcan3_gclk",
+ .id = 64,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "mcan4_gclk",
+ .id = 65,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "mcan5_gclk",
+ .id = 66,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "pdmc0_gclk",
+ .id = 68,
+ .r = { .max = 50000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "pdmc1_gclk",
+ .id = 69,
+ .r = { .max = 50000000, },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "pit64b0_gclk",
+ .id = 70,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "imgpll_divpmcck", "baudpll_divpmcck",
+ "audiopll_divpmcck", "ethpll_divpmcck", },
+ .ep_mux_table = { 5, 7, 8, 9, 10, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_IMG_DIV,
+ ID_PLL_BAUD_DIV, ID_PLL_AUDIO_DIVPMC,
+ ID_PLL_ETH_DIV, },
+ .ep_count = 5,
+ },
+
+ {
+ .n = "pit64b1_gclk",
+ .id = 71,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "imgpll_divpmcck", "baudpll_divpmcck",
+ "audiopll_divpmcck", "ethpll_divpmcck", },
+ .ep_mux_table = { 5, 7, 8, 9, 10, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_IMG_DIV,
+ ID_PLL_BAUD_DIV, ID_PLL_AUDIO_DIVPMC,
+ ID_PLL_ETH_DIV, },
+ .ep_count = 5,
+ },
+
+ {
+ .n = "pit64b2_gclk",
+ .id = 72,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "imgpll_divpmcck", "baudpll_divpmcck",
+ "audiopll_divpmcck", "ethpll_divpmcck", },
+ .ep_mux_table = { 5, 7, 8, 9, 10, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_IMG_DIV,
+ ID_PLL_BAUD_DIV, ID_PLL_AUDIO_DIVPMC,
+ ID_PLL_ETH_DIV, },
+ .ep_count = 5,
+ },
+
+ {
+ .n = "pit64b3_gclk",
+ .id = 73,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "imgpll_divpmcck", "baudpll_divpmcck",
+ "audiopll_divpmcck", "ethpll_divpmcck", },
+ .ep_mux_table = { 5, 7, 8, 9, 10, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_IMG_DIV,
+ ID_PLL_BAUD_DIV, ID_PLL_AUDIO_DIVPMC,
+ ID_PLL_ETH_DIV, },
+ .ep_count = 5,
+ },
+
+ {
+ .n = "pit64b4_gclk",
+ .id = 74,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "imgpll_divpmcck", "baudpll_divpmcck",
+ "audiopll_divpmcck", "ethpll_divpmcck", },
+ .ep_mux_table = { 5, 7, 8, 9, 10, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_IMG_DIV,
+ ID_PLL_BAUD_DIV, ID_PLL_AUDIO_DIVPMC,
+ ID_PLL_ETH_DIV, },
+ .ep_count = 5,
+ },
+
+ {
+ .n = "pit64b5_gclk",
+ .id = 75,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "imgpll_divpmcck", "baudpll_divpmcck",
+ "audiopll_divpmcck", "ethpll_divpmcck", },
+ .ep_mux_table = { 5, 7, 8, 9, 10, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_IMG_DIV,
+ ID_PLL_BAUD_DIV, ID_PLL_AUDIO_DIVPMC,
+ ID_PLL_ETH_DIV, },
+ .ep_count = 5,
+ },
+
+ {
+ .n = "qspi0_gclk",
+ .id = 78,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_IMG_DIV,
+ ID_PLL_BAUD_DIV, ID_PLL_AUDIO_DIVPMC,
+ ID_PLL_ETH_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "qspi1_gclk",
+ .id = 79,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "sdmmc0_gclk",
+ .id = 80,
+ .r = { .max = 208000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "sdmmc1_gclk",
+ .id = 81,
+ .r = { .max = 208000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "sdmmc2_gclk",
+ .id = 82,
+ .r = { .max = 208000000 },
+ .ep = { "syspll_divpmcck", "baudpll_divpmcck", },
+ .ep_mux_table = { 5, 8, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_BAUD_DIV, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "spdifrx_gclk",
+ .id = 84,
+ .r = { .max = 150000000 },
+ .ep = { "syspll_divpmcck", "audiopll_divpmcck", },
+ .ep_mux_table = { 5, 9, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_AUDIO_DIVPMC, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "spdiftx_gclk",
+ .id = 85,
+ .r = { .max = 25000000 },
+ .ep = { "syspll_divpmcck", "audiopll_divpmcck", },
+ .ep_mux_table = { 5, 9, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_AUDIO_DIVPMC, },
+ .ep_count = 2,
+ },
+
+ {
+ .n = "tcb0_ch0_gclk",
+ .id = 88,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "imgpll_divpmcck", "baudpll_divpmcck",
+ "audiopll_divpmcck", "ethpll_divpmcck", },
+ .ep_mux_table = { 5, 7, 8, 9, 10, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_IMG_DIV,
+ ID_PLL_BAUD_DIV, ID_PLL_AUDIO_DIVPMC,
+ ID_PLL_ETH_DIV, },
+ .ep_count = 5,
+ },
+
+ {
+ .n = "tcb1_ch0_gclk",
+ .id = 91,
+ .r = { .max = 200000000 },
+ .ep = { "syspll_divpmcck", "imgpll_divpmcck", "baudpll_divpmcck",
+ "audiopll_divpmcck", "ethpll_divpmcck", },
+ .ep_mux_table = { 5, 7, 8, 9, 10, },
+ .ep_clk_mux_table = { ID_PLL_SYS_DIV, ID_PLL_IMG_DIV,
+ ID_PLL_BAUD_DIV, ID_PLL_AUDIO_DIVPMC,
+ ID_PLL_ETH_DIV, },
+ .ep_count = 5,
+ },
+};
+
+/**
+ * Clock setup description
+ * @cid: clock id corresponding to clock subsystem
+ * @pid: parent clock id corresponding to clock subsystem
+ * @rate: clock rate
+ * @prate: parent rate
+ */
+static const struct pmc_clk_setup {
+ unsigned int cid;
+ unsigned int pid;
+ unsigned long rate;
+ unsigned long prate;
+} sama7g5_clk_setup[] = {
+ {
+ .cid = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_PLL_ETH_FRAC),
+ .rate = 625000000,
+ },
+
+ {
+ .cid = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_PLL_ETH_DIV),
+ .rate = 625000000,
+ },
+};
+
+#define SAMA7G5_MAX_MUX_ALLOCS (64)
+
+#define prepare_mux_table(_allocs, _index, _dst, _src, _num, _label) \
+ do { \
+ int _i; \
+ if ((_index) >= SAMA7G5_MAX_MUX_ALLOCS) { \
+ debug("%s(): AT91: MUX: insufficient space\n", \
+ __func__); \
+ goto _label; \
+ } \
+ (_dst) = kzalloc(sizeof(*(_dst)) * (_num), GFP_KERNEL); \
+ if (!(_dst)) \
+ goto _label; \
+ (_allocs)[(_index)++] = (_dst); \
+ for (_i = 0; _i < (_num); _i++) \
+ (_dst)[_i] = (_src)[_i]; \
+ } while (0)
+
+static int sama7g5_clk_probe(struct udevice *dev)
+{
+ void __iomem *base = (void *)devfdt_get_addr(dev);
+ unsigned int *clkmuxallocs[SAMA7G5_MAX_MUX_ALLOCS];
+ unsigned int *muxallocs[SAMA7G5_MAX_MUX_ALLOCS];
+ const char *p[10];
+ unsigned int cm[10], m[10], *tmpclkmux, *tmpmux;
+ struct clk clk, *c, *parent;
+ bool main_osc_bypass;
+ int ret, muxallocindex = 0, clkmuxallocindex = 0, i, j;
+
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ memset(muxallocs, 0, ARRAY_SIZE(muxallocs));
+ memset(clkmuxallocs, 0, ARRAY_SIZE(clkmuxallocs));
+
+ ret = clk_get_by_index(dev, 0, &clk);
+ if (ret)
+ return ret;
+ ret = clk_get_by_id(clk.id, &c);
+ if (ret)
+ return ret;
+ clk_names[ID_TD_SLCK] = kmemdup(clk_hw_get_name(c),
+ strlen(clk_hw_get_name(c)) + 1, GFP_KERNEL);
+ if (!clk_names[ID_TD_SLCK])
+ return -ENOMEM;
+
+ ret = clk_get_by_index(dev, 1, &clk);
+ if (ret)
+ return ret;
+ ret = clk_get_by_id(clk.id, &c);
+ if (ret)
+ return ret;
+ clk_names[ID_MD_SLCK] = kmemdup(clk_hw_get_name(c),
+ strlen(clk_hw_get_name(c)) + 1, GFP_KERNEL);
+ if (!clk_names[ID_MD_SLCK])
+ return -ENOMEM;
+
+ ret = clk_get_by_index(dev, 2, &clk);
+ if (ret)
+ return ret;
+ clk_names[ID_MAIN_XTAL] = kmemdup(clk_hw_get_name(&clk),
+ strlen(clk_hw_get_name(&clk)) + 1, GFP_KERNEL);
+ if (!clk_names[ID_MAIN_XTAL])
+ return -ENOMEM;
+
+ ret = clk_get_by_index(dev, 3, &clk);
+ if (ret)
+ goto fail;
+ clk_names[ID_MAIN_RC] = kmemdup(clk_hw_get_name(&clk),
+ strlen(clk_hw_get_name(&clk)) + 1, GFP_KERNEL);
+ if (ret)
+ goto fail;
+
+ main_osc_bypass = dev_read_bool(dev, "atmel,main-osc-bypass");
+
+ /* Register main rc oscillator. */
+ clk_dm(AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MAIN_RC_OSC),
+ at91_clk_main_rc(base, clk_names[ID_MAIN_RC_OSC],
+ clk_names[ID_MAIN_RC]));
+
+ /* Register main oscillator. */
+ clk_dm(AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MAIN_OSC),
+ at91_clk_main_osc(base, clk_names[ID_MAIN_OSC],
+ clk_names[ID_MAIN_XTAL], main_osc_bypass));
+
+ /* Register mainck. */
+ p[0] = clk_names[ID_MAIN_RC_OSC];
+ p[1] = clk_names[ID_MAIN_OSC];
+ cm[0] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MAIN_RC_OSC);
+ cm[1] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MAIN_OSC);
+ prepare_mux_table(clkmuxallocs, clkmuxallocindex, tmpclkmux, cm, 2,
+ fail);
+ clk_dm(AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MAINCK),
+ at91_clk_sam9x5_main(base, clk_names[ID_MAINCK], p,
+ 2, tmpclkmux, PMC_TYPE_CORE));
+
+ /* Register PLL fracs clocks. */
+ for (i = 0; i < ARRAY_SIZE(sama7g5_plls); i++) {
+ if (sama7g5_plls[i].t != PLL_TYPE_FRAC)
+ continue;
+
+ clk_dm(AT91_TO_CLK_ID(PMC_TYPE_CORE, sama7g5_plls[i].cid),
+ sam9x60_clk_register_frac_pll(base, sama7g5_plls[i].n,
+ sama7g5_plls[i].p, sama7g5_plls[i].id,
+ &pll_characteristics, sama7g5_plls[i].l,
+ sama7g5_plls[i].c));
+ }
+
+ /* Register PLL div clocks. */
+ for (i = 0; i < ARRAY_SIZE(sama7g5_plls); i++) {
+ if (sama7g5_plls[i].t != PLL_TYPE_DIV)
+ continue;
+
+ clk_dm(AT91_TO_CLK_ID(PMC_TYPE_CORE, sama7g5_plls[i].cid),
+ sam9x60_clk_register_div_pll(base, sama7g5_plls[i].n,
+ sama7g5_plls[i].p, sama7g5_plls[i].id,
+ &pll_characteristics, sama7g5_plls[i].l,
+ sama7g5_plls[i].c));
+ }
+
+ /* Register MCK0 clock. */
+ p[0] = clk_names[ID_MD_SLCK];
+ p[1] = clk_names[ID_MAINCK];
+ p[2] = clk_names[ID_PLL_CPU_DIV];
+ p[3] = clk_names[ID_PLL_SYS_DIV];
+ cm[0] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MD_SLCK);
+ cm[1] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MAINCK);
+ cm[2] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_PLL_CPU_DIV);
+ cm[3] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_PLL_SYS_DIV);
+ prepare_mux_table(clkmuxallocs, clkmuxallocindex, tmpclkmux, cm, 2,
+ fail);
+ clk_dm(AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MCK0),
+ at91_clk_register_master(base, clk_names[ID_MCK0], p,
+ 4, &mck0_layout, &mck0_characteristics, tmpclkmux));
+
+ /* Register MCK1-4 clocks. */
+ p[0] = clk_names[ID_MD_SLCK];
+ p[1] = clk_names[ID_TD_SLCK];
+ p[2] = clk_names[ID_MAINCK];
+ p[3] = clk_names[ID_MCK0];
+ m[0] = 0;
+ m[1] = 1;
+ m[2] = 2;
+ m[3] = 3;
+ cm[0] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MD_SLCK);
+ cm[1] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_TD_SLCK);
+ cm[2] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MAINCK);
+ cm[3] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MCK0);
+ for (i = 0; i < ARRAY_SIZE(sama7g5_mckx); i++) {
+ for (j = 0; j < sama7g5_mckx[i].ep_count; j++) {
+ p[4 + j] = sama7g5_mckx[i].ep[j];
+ m[4 + j] = sama7g5_mckx[i].ep_mux_table[j];
+ cm[4 + j] = AT91_TO_CLK_ID(PMC_TYPE_CORE,
+ sama7g5_mckx[i].ep_clk_mux_table[j]);
+ }
+
+ prepare_mux_table(clkmuxallocs, clkmuxallocindex, tmpclkmux, cm,
+ 4 + sama7g5_mckx[i].ep_count, fail);
+ prepare_mux_table(muxallocs, muxallocindex, tmpmux, m,
+ 4 + sama7g5_mckx[i].ep_count, fail);
+
+ clk_dm(AT91_TO_CLK_ID(PMC_TYPE_CORE, sama7g5_mckx[i].cid),
+ at91_clk_sama7g5_register_master(base,
+ sama7g5_mckx[i].n, p, 4 + sama7g5_mckx[i].ep_count,
+ tmpmux, tmpclkmux, sama7g5_mckx[i].c,
+ sama7g5_mckx[i].id));
+ }
+
+ /* Register UTMI clock. */
+ clk_dm(AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_UTMI),
+ at91_clk_sama7g5_register_utmi(base, "utmick",
+ clk_names[ID_MAIN_XTAL]));
+
+ /* Register programmable clocks. */
+ p[0] = clk_names[ID_MD_SLCK];
+ p[1] = clk_names[ID_TD_SLCK];
+ p[2] = clk_names[ID_MAINCK];
+ p[3] = clk_names[ID_MCK0];
+ p[4] = clk_names[ID_PLL_SYS_DIV];
+ p[5] = clk_names[ID_PLL_DDR_DIV];
+ p[6] = clk_names[ID_PLL_IMG_DIV];
+ p[7] = clk_names[ID_PLL_BAUD_DIV];
+ p[8] = clk_names[ID_PLL_AUDIO_DIVPMC];
+ p[9] = clk_names[ID_PLL_ETH_DIV];
+ cm[0] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MD_SLCK);
+ cm[1] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_TD_SLCK);
+ cm[2] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MAINCK);
+ cm[3] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MCK0);
+ cm[4] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_PLL_SYS_DIV);
+ cm[5] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_PLL_DDR_DIV);
+ cm[6] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_PLL_IMG_DIV);
+ cm[7] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_PLL_BAUD_DIV);
+ cm[8] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_PLL_AUDIO_DIVPMC);
+ cm[9] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_PLL_ETH_DIV);
+ for (i = 0; i < ARRAY_SIZE(sama7g5_prog); i++) {
+ prepare_mux_table(clkmuxallocs, clkmuxallocindex, tmpclkmux, cm,
+ 10, fail);
+
+ clk_dm(AT91_TO_CLK_ID(PMC_TYPE_CORE, sama7g5_prog[i].cid),
+ at91_clk_register_programmable(base, sama7g5_prog[i].n,
+ p, 10, i, &programmable_layout, tmpclkmux,
+ sama7g5_prog_mux_table));
+ }
+
+ /* System clocks. */
+ for (i = 0; i < ARRAY_SIZE(sama7g5_systemck); i++) {
+ clk_dm(AT91_TO_CLK_ID(PMC_TYPE_SYSTEM, sama7g5_systemck[i].cid),
+ at91_clk_register_system(base, sama7g5_systemck[i].n,
+ sama7g5_systemck[i].p, sama7g5_systemck[i].id));
+ }
+
+ /* Peripheral clocks. */
+ for (i = 0; i < ARRAY_SIZE(sama7g5_periphck); i++) {
+ clk_dm(AT91_TO_CLK_ID(PMC_TYPE_PERIPHERAL,
+ sama7g5_periphck[i].id),
+ at91_clk_register_sam9x5_peripheral(base,
+ &sama7g5_pcr_layout, sama7g5_periphck[i].n,
+ sama7g5_periphck[i].p, sama7g5_periphck[i].id,
+ &sama7g5_periphck[i].r));
+ }
+
+ /* Generic clocks. */
+ p[0] = clk_names[ID_MD_SLCK];
+ p[1] = clk_names[ID_TD_SLCK];
+ p[2] = clk_names[ID_MAINCK];
+ p[3] = clk_names[ID_MCK0];
+ m[0] = 0;
+ m[1] = 1;
+ m[2] = 2;
+ m[3] = 3;
+ cm[0] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MD_SLCK);
+ cm[1] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_TD_SLCK);
+ cm[2] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MAINCK);
+ cm[3] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MCK0);
+ for (i = 0; i < ARRAY_SIZE(sama7g5_gck); i++) {
+ for (j = 0; j < sama7g5_gck[i].ep_count; j++) {
+ p[4 + j] = sama7g5_gck[i].ep[j];
+ m[4 + j] = sama7g5_gck[i].ep_mux_table[j];
+ cm[4 + j] = AT91_TO_CLK_ID(PMC_TYPE_CORE,
+ sama7g5_gck[i].ep_clk_mux_table[j]);
+ }
+
+ prepare_mux_table(clkmuxallocs, clkmuxallocindex, tmpclkmux, cm,
+ 4 + sama7g5_gck[i].ep_count, fail);
+ prepare_mux_table(muxallocs, muxallocindex, tmpmux, m,
+ 4 + sama7g5_gck[i].ep_count, fail);
+
+ clk_dm(AT91_TO_CLK_ID(PMC_TYPE_GCK, sama7g5_gck[i].id),
+ at91_clk_register_generic(base, &sama7g5_pcr_layout,
+ sama7g5_gck[i].n, p, tmpclkmux, tmpmux,
+ 4 + sama7g5_gck[i].ep_count, sama7g5_gck[i].id,
+ &sama7g5_gck[i].r));
+ }
+
+ /* Setup clocks. */
+ for (i = 0; i < ARRAY_SIZE(sama7g5_clk_setup); i++) {
+ ret = clk_get_by_id(sama7g5_clk_setup[i].cid, &c);
+ if (ret)
+ goto fail;
+
+ if (sama7g5_clk_setup[i].pid) {
+ ret = clk_get_by_id(sama7g5_clk_setup[i].pid, &parent);
+ if (ret)
+ goto fail;
+
+ ret = clk_set_parent(c, parent);
+ if (ret)
+ goto fail;
+
+ if (sama7g5_clk_setup[i].prate) {
+ ret = clk_set_rate(parent,
+ sama7g5_clk_setup[i].prate);
+ if (ret < 0)
+ goto fail;
+ }
+ }
+
+ if (sama7g5_clk_setup[i].rate) {
+ ret = clk_set_rate(c, sama7g5_clk_setup[i].rate);
+ if (ret < 0)
+ goto fail;
+ }
+ }
+
+ return 0;
+
+fail:
+ for (i = 0; i < ARRAY_SIZE(muxallocs); i++)
+ kfree(muxallocs[i]);
+
+ for (i = 0; i < ARRAY_SIZE(clkmuxallocs); i++)
+ kfree(clkmuxallocs[i]);
+
+ return -ENOMEM;
+}
+
+static const struct udevice_id sama7g5_clk_ids[] = {
+ { .compatible = "microchip,sama7g5-pmc" },
+ { /* Sentinel. */ },
+};
+
+U_BOOT_DRIVER(at91_sama7g5_pmc) = {
+ .name = "at91-sama7g5-pmc",
+ .id = UCLASS_CLK,
+ .of_match = sama7g5_clk_ids,
+ .ops = &at91_clk_ops,
+ .probe = sama7g5_clk_probe,
+ .flags = DM_FLAG_PRE_RELOC,
+};
diff --git a/drivers/clk/at91/sckc.c b/drivers/clk/at91/sckc.c
index a879b008ff..dd62dc5510 100644
--- a/drivers/clk/at91/sckc.c
+++ b/drivers/clk/at91/sckc.c
@@ -1,19 +1,172 @@
// SPDX-License-Identifier: GPL-2.0+
/*
- * Copyright (C) 2016 Atmel Corporation
- * Wenyou.Yang <wenyou.yang@atmel.com>
+ * Slow clock support for AT91 architectures.
+ *
+ * Copyright (C) 2020 Microchip Technology Inc. and its subsidiaries
+ *
+ * Author: Claudiu Beznea <claudiu.beznea@microchip.com>
*/
#include <common.h>
+#include <clk-uclass.h>
#include <dm.h>
+#include <dt-bindings/clk/at91.h>
+#include <linux/clk-provider.h>
-static const struct udevice_id at91_sckc_match[] = {
- { .compatible = "atmel,at91sam9x5-sckc" },
- {}
+#include "pmc.h"
+
+#define UBOOT_DM_CLK_AT91_SAM9X60_TD_SLCK "at91-sam9x60-td-slck"
+#define UBOOT_DM_CLK_AT91_SCKC "at91-sckc"
+
+#define AT91_OSC_SEL BIT(24)
+#define AT91_OSC_SEL_SHIFT (24)
+
+struct sam9x60_sckc {
+ void __iomem *reg;
+ const char **parent_names;
+ unsigned int num_parents;
+ struct clk clk;
+};
+
+#define to_sam9x60_sckc(c) container_of(c, struct sam9x60_sckc, clk)
+
+static int sam9x60_sckc_of_xlate(struct clk *clk,
+ struct ofnode_phandle_args *args)
+{
+ if (args->args_count != 1) {
+ debug("AT91: SCKC: Invalid args_count: %d\n", args->args_count);
+ return -EINVAL;
+ }
+
+ clk->id = AT91_TO_CLK_ID(PMC_TYPE_SLOW, args->args[0]);
+
+ return 0;
+}
+
+static const struct clk_ops sam9x60_sckc_ops = {
+ .of_xlate = sam9x60_sckc_of_xlate,
+ .get_rate = clk_generic_get_rate,
+};
+
+static int sam9x60_td_slck_set_parent(struct clk *clk, struct clk *parent)
+{
+ struct sam9x60_sckc *sckc = to_sam9x60_sckc(clk);
+ u32 i;
+
+ for (i = 0; i < sckc->num_parents; i++) {
+ if (!strcmp(parent->dev->name, sckc->parent_names[i]))
+ break;
+ }
+ if (i == sckc->num_parents)
+ return -EINVAL;
+
+ pmc_update_bits(sckc->reg, 0, AT91_OSC_SEL, (i << AT91_OSC_SEL_SHIFT));
+
+ return 0;
+}
+
+static const struct clk_ops sam9x60_td_slck_ops = {
+ .get_rate = clk_generic_get_rate,
+ .set_parent = sam9x60_td_slck_set_parent,
+};
+
+static struct clk *at91_sam9x60_clk_register_td_slck(struct sam9x60_sckc *sckc,
+ const char *name, const char * const *parent_names,
+ int num_parents)
+{
+ struct clk *clk;
+ int ret = -ENOMEM;
+ u32 val, i;
+
+ if (!sckc || !name || !parent_names || num_parents != 2)
+ return ERR_PTR(-EINVAL);
+
+ sckc->parent_names = kzalloc(sizeof(*sckc->parent_names) * num_parents,
+ GFP_KERNEL);
+ if (!sckc->parent_names)
+ return ERR_PTR(ret);
+
+ for (i = 0; i < num_parents; i++) {
+ sckc->parent_names[i] = kmemdup(parent_names[i],
+ strlen(parent_names[i]) + 1, GFP_KERNEL);
+ if (!sckc->parent_names[i])
+ goto free;
+ }
+ sckc->num_parents = num_parents;
+
+ pmc_read(sckc->reg, 0, &val);
+ val = (val & AT91_OSC_SEL) >> AT91_OSC_SEL_SHIFT;
+
+ clk = &sckc->clk;
+ ret = clk_register(clk, UBOOT_DM_CLK_AT91_SAM9X60_TD_SLCK, name,
+ parent_names[val]);
+ if (ret)
+ goto free;
+
+ return clk;
+
+free:
+ for (; i >= 0; i--)
+ kfree(sckc->parent_names[i]);
+ kfree(sckc->parent_names);
+
+ return ERR_PTR(ret);
+}
+
+U_BOOT_DRIVER(at91_sam9x60_td_slck) = {
+ .name = UBOOT_DM_CLK_AT91_SAM9X60_TD_SLCK,
+ .id = UCLASS_CLK,
+ .ops = &sam9x60_td_slck_ops,
+ .flags = DM_FLAG_PRE_RELOC,
+};
+
+static int at91_sam9x60_sckc_probe(struct udevice *dev)
+{
+ struct sam9x60_sckc *sckc = dev_get_priv(dev);
+ void __iomem *base = (void *)devfdt_get_addr(dev);
+ const char *slow_rc_osc, *slow_osc;
+ const char *parents[2];
+ struct clk *clk, c;
+ int ret;
+
+ ret = clk_get_by_index(dev, 0, &c);
+ if (ret)
+ return ret;
+ slow_rc_osc = clk_hw_get_name(&c);
+
+ ret = clk_get_by_index(dev, 1, &c);
+ if (ret)
+ return ret;
+ slow_osc = clk_hw_get_name(&c);
+
+ clk = clk_register_fixed_factor(NULL, "md_slck", slow_rc_osc, 0, 1, 1);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+ clk_dm(AT91_TO_CLK_ID(PMC_TYPE_SLOW, 0), clk);
+
+ parents[0] = slow_rc_osc;
+ parents[1] = slow_osc;
+ sckc[1].reg = base;
+ clk = at91_sam9x60_clk_register_td_slck(&sckc[1], "td_slck",
+ parents, 2);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+ clk_dm(AT91_TO_CLK_ID(PMC_TYPE_SLOW, 1), clk);
+
+ return 0;
+}
+
+static const struct udevice_id sam9x60_sckc_ids[] = {
+ { .compatible = "microchip,sam9x60-sckc" },
+ { /* Sentinel. */ },
};
U_BOOT_DRIVER(at91_sckc) = {
- .name = "at91-sckc",
- .id = UCLASS_SIMPLE_BUS,
- .of_match = at91_sckc_match,
+ .name = UBOOT_DM_CLK_AT91_SCKC,
+ .id = UCLASS_CLK,
+ .of_match = sam9x60_sckc_ids,
+ .priv_auto_alloc_size = sizeof(struct sam9x60_sckc) * 2,
+ .ops = &sam9x60_sckc_ops,
+ .probe = at91_sam9x60_sckc_probe,
+ .flags = DM_FLAG_PRE_RELOC,
};
diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c
index 934cd5787a..4076535271 100644
--- a/drivers/clk/clk-uclass.c
+++ b/drivers/clk/clk-uclass.c
@@ -14,6 +14,7 @@
#include <errno.h>
#include <log.h>
#include <malloc.h>
+#include <dm/device-internal.h>
#include <dm/devres.h>
#include <dm/read.h>
#include <linux/bug.h>
@@ -187,9 +188,26 @@ bulk_get_err:
return ret;
}
+static struct clk *clk_set_default_get_by_id(struct clk *clk)
+{
+ struct clk *c = clk;
+
+ if (CONFIG_IS_ENABLED(CLK_CCF)) {
+ int ret = clk_get_by_id(clk->id, &c);
+
+ if (ret) {
+ debug("%s(): could not get parent clock pointer, id %lu\n",
+ __func__, clk->id);
+ ERR_PTR(ret);
+ }
+ }
+
+ return c;
+}
+
static int clk_set_default_parents(struct udevice *dev, int stage)
{
- struct clk clk, parent_clk;
+ struct clk clk, parent_clk, *c, *p;
int index;
int num_parents;
int ret;
@@ -215,6 +233,10 @@ static int clk_set_default_parents(struct udevice *dev, int stage)
return ret;
}
+ p = clk_set_default_get_by_id(&parent_clk);
+ if (IS_ERR(p))
+ return PTR_ERR(p);
+
ret = clk_get_by_indexed_prop(dev, "assigned-clocks",
index, &clk);
if (ret) {
@@ -234,7 +256,11 @@ static int clk_set_default_parents(struct udevice *dev, int stage)
/* do not setup twice the parent clocks */
continue;
- ret = clk_set_parent(&clk, &parent_clk);
+ c = clk_set_default_get_by_id(&clk);
+ if (IS_ERR(c))
+ return PTR_ERR(c);
+
+ ret = clk_set_parent(c, p);
/*
* Not all drivers may support clock-reparenting (as of now).
* Ignore errors due to this.
@@ -254,7 +280,7 @@ static int clk_set_default_parents(struct udevice *dev, int stage)
static int clk_set_default_rates(struct udevice *dev, int stage)
{
- struct clk clk;
+ struct clk clk, *c;
int index;
int num_rates;
int size;
@@ -298,7 +324,11 @@ static int clk_set_default_rates(struct udevice *dev, int stage)
/* do not setup twice the parent clocks */
continue;
- ret = clk_set_rate(&clk, rates[index]);
+ c = clk_set_default_get_by_id(&clk);
+ if (IS_ERR(c))
+ return PTR_ERR(c);
+
+ ret = clk_set_rate(c, rates[index]);
if (ret < 0) {
debug("%s: failed to set rate on clock index %d (%ld) for %s\n",
@@ -512,6 +542,7 @@ ulong clk_set_rate(struct clk *clk, ulong rate)
int clk_set_parent(struct clk *clk, struct clk *parent)
{
const struct clk_ops *ops;
+ int ret;
debug("%s(clk=%p, parent=%p)\n", __func__, clk, parent);
if (!clk_valid(clk))
@@ -521,7 +552,14 @@ int clk_set_parent(struct clk *clk, struct clk *parent)
if (!ops->set_parent)
return -ENOSYS;
- return ops->set_parent(clk, parent);
+ ret = ops->set_parent(clk, parent);
+ if (ret)
+ return ret;
+
+ if (CONFIG_IS_ENABLED(CLK_CCF))
+ ret = device_reparent(clk->dev, parent->dev);
+
+ return ret;
}
int clk_enable(struct clk *clk)
@@ -597,6 +635,9 @@ int clk_disable(struct clk *clk)
if (CONFIG_IS_ENABLED(CLK_CCF)) {
if (clk->id && !clk_get_by_id(clk->id, &clkp)) {
+ if (clkp->flags & CLK_IS_CRITICAL)
+ return 0;
+
if (clkp->enable_count == 0) {
printf("clk %s already disabled\n",
clkp->dev->name);
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 786f4e887e..319808d433 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -57,6 +57,9 @@ ulong clk_generic_get_rate(struct clk *clk)
const char *clk_hw_get_name(const struct clk *hw)
{
+ assert(hw);
+ assert(hw->dev);
+
return hw->dev->name;
}
diff --git a/drivers/clk/clk_fixed_rate.c b/drivers/clk/clk_fixed_rate.c
index 2c20eddb0b..55e1f8caa5 100644
--- a/drivers/clk/clk_fixed_rate.c
+++ b/drivers/clk/clk_fixed_rate.c
@@ -53,4 +53,5 @@ U_BOOT_DRIVER(clk_fixed_rate) = {
.ofdata_to_platdata = clk_fixed_rate_ofdata_to_platdata,
.platdata_auto_alloc_size = sizeof(struct clk_fixed_rate),
.ops = &clk_fixed_rate_ops,
+ .flags = DM_FLAG_PRE_RELOC,
};
diff --git a/drivers/clk/clk_scmi.c b/drivers/clk/clk_scmi.c
new file mode 100644
index 0000000000..93a4819501
--- /dev/null
+++ b/drivers/clk/clk_scmi.c
@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019-2020 Linaro Limited
+ */
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <scmi_agent.h>
+#include <scmi_protocols.h>
+#include <asm/types.h>
+
+static int scmi_clk_gate(struct clk *clk, int enable)
+{
+ struct scmi_clk_state_in in = {
+ .clock_id = clk->id,
+ .attributes = enable,
+ };
+ struct scmi_clk_state_out out;
+ struct scmi_msg msg = SCMI_MSG_IN(SCMI_PROTOCOL_ID_CLOCK,
+ SCMI_CLOCK_CONFIG_SET,
+ in, out);
+ int ret;
+
+ ret = devm_scmi_process_msg(clk->dev->parent, &msg);
+ if (ret)
+ return ret;
+
+ return scmi_to_linux_errno(out.status);
+}
+
+static int scmi_clk_enable(struct clk *clk)
+{
+ return scmi_clk_gate(clk, 1);
+}
+
+static int scmi_clk_disable(struct clk *clk)
+{
+ return scmi_clk_gate(clk, 0);
+}
+
+static ulong scmi_clk_get_rate(struct clk *clk)
+{
+ struct scmi_clk_rate_get_in in = {
+ .clock_id = clk->id,
+ };
+ struct scmi_clk_rate_get_out out;
+ struct scmi_msg msg = SCMI_MSG_IN(SCMI_PROTOCOL_ID_CLOCK,
+ SCMI_CLOCK_RATE_GET,
+ in, out);
+ int ret;
+
+ ret = devm_scmi_process_msg(clk->dev->parent, &msg);
+ if (ret < 0)
+ return ret;
+
+ ret = scmi_to_linux_errno(out.status);
+ if (ret < 0)
+ return ret;
+
+ return (ulong)(((u64)out.rate_msb << 32) | out.rate_lsb);
+}
+
+static ulong scmi_clk_set_rate(struct clk *clk, ulong rate)
+{
+ struct scmi_clk_rate_set_in in = {
+ .clock_id = clk->id,
+ .flags = SCMI_CLK_RATE_ROUND_CLOSEST,
+ .rate_lsb = (u32)rate,
+ .rate_msb = (u32)((u64)rate >> 32),
+ };
+ struct scmi_clk_rate_set_out out;
+ struct scmi_msg msg = SCMI_MSG_IN(SCMI_PROTOCOL_ID_CLOCK,
+ SCMI_CLOCK_RATE_SET,
+ in, out);
+ int ret;
+
+ ret = devm_scmi_process_msg(clk->dev->parent, &msg);
+ if (ret < 0)
+ return ret;
+
+ ret = scmi_to_linux_errno(out.status);
+ if (ret < 0)
+ return ret;
+
+ return scmi_clk_get_rate(clk);
+}
+
+static const struct clk_ops scmi_clk_ops = {
+ .enable = scmi_clk_enable,
+ .disable = scmi_clk_disable,
+ .get_rate = scmi_clk_get_rate,
+ .set_rate = scmi_clk_set_rate,
+};
+
+U_BOOT_DRIVER(scmi_clock) = {
+ .name = "scmi_clk",
+ .id = UCLASS_CLK,
+ .ops = &scmi_clk_ops,
+};
diff --git a/drivers/clk/clk_zynqmp.c b/drivers/clk/clk_zynqmp.c
index 2313ac0bc0..7795119756 100644
--- a/drivers/clk/clk_zynqmp.c
+++ b/drivers/clk/clk_zynqmp.c
@@ -710,7 +710,7 @@ static const struct udevice_id zynqmp_clk_ids[] = {
};
U_BOOT_DRIVER(zynqmp_clk) = {
- .name = "zynqmp-clk",
+ .name = "zynqmp_clk",
.id = UCLASS_CLK,
.of_match = zynqmp_clk_ids,
.probe = zynqmp_clk_probe,
diff --git a/drivers/clk/kendryte/clk.c b/drivers/clk/kendryte/clk.c
index 981b3b7699..bb196961af 100644
--- a/drivers/clk/kendryte/clk.c
+++ b/drivers/clk/kendryte/clk.c
@@ -646,6 +646,10 @@ static int k210_clk_probe(struct udevice *dev)
REGISTER_GATE(K210_CLK_RTC, "rtc", in0);
#undef REGISTER_GATE
+ /* The MTIME register in CLINT runs at one 50th the CPU clock speed */
+ clk_dm(K210_CLK_CLINT,
+ clk_register_fixed_factor(NULL, "clint", "cpu", 0, 1, 50));
+
return 0;
}