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path: root/drivers/clk/renesas/r8a779f0-cpg-mssr.c
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Diffstat (limited to 'drivers/clk/renesas/r8a779f0-cpg-mssr.c')
-rw-r--r--drivers/clk/renesas/r8a779f0-cpg-mssr.c183
1 files changed, 183 insertions, 0 deletions
diff --git a/drivers/clk/renesas/r8a779f0-cpg-mssr.c b/drivers/clk/renesas/r8a779f0-cpg-mssr.c
new file mode 100644
index 000000000000..e6ec02c2c2a8
--- /dev/null
+++ b/drivers/clk/renesas/r8a779f0-cpg-mssr.c
@@ -0,0 +1,183 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * r8a779f0 Clock Pulse Generator / Module Standby and Software Reset
+ *
+ * Copyright (C) 2021 Renesas Electronics Corp.
+ *
+ * Based on r8a779a0-cpg-mssr.c
+ */
+
+#include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/soc/renesas/rcar-rst.h>
+
+#include <dt-bindings/clock/r8a779f0-cpg-mssr.h>
+
+#include "renesas-cpg-mssr.h"
+#include "rcar-gen4-cpg.h"
+
+enum clk_ids {
+ /* Core Clock Outputs exported to DT */
+ LAST_DT_CORE_CLK = R8A779F0_CLK_R,
+
+ /* External Input Clocks */
+ CLK_EXTAL,
+ CLK_EXTALR,
+
+ /* Internal Core Clocks */
+ CLK_MAIN,
+ CLK_PLL1,
+ CLK_PLL2,
+ CLK_PLL3,
+ CLK_PLL5,
+ CLK_PLL6,
+ CLK_PLL1_DIV2,
+ CLK_PLL2_DIV2,
+ CLK_PLL3_DIV2,
+ CLK_PLL5_DIV2,
+ CLK_PLL5_DIV4,
+ CLK_PLL6_DIV2,
+ CLK_S0,
+ CLK_SDSRC,
+ CLK_RPCSRC,
+ CLK_OCO,
+
+ /* Module Clocks */
+ MOD_CLK_BASE
+};
+
+static const struct cpg_core_clk r8a779f0_core_clks[] __initconst = {
+ /* External Clock Inputs */
+ DEF_INPUT("extal", CLK_EXTAL),
+ DEF_INPUT("extalr", CLK_EXTALR),
+
+ /* Internal Core Clocks */
+ DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN4_MAIN, CLK_EXTAL),
+ DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN4_PLL1, CLK_MAIN),
+ DEF_BASE(".pll2", CLK_PLL2, CLK_TYPE_GEN4_PLL2, CLK_MAIN),
+ DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN4_PLL3, CLK_MAIN),
+ DEF_BASE(".pll5", CLK_PLL5, CLK_TYPE_GEN4_PLL5, CLK_MAIN),
+ DEF_BASE(".pll6", CLK_PLL6, CLK_TYPE_GEN4_PLL6, CLK_MAIN),
+
+ DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
+ DEF_FIXED(".pll2_div2", CLK_PLL2_DIV2, CLK_PLL2, 2, 1),
+ DEF_FIXED(".pll3_div2", CLK_PLL3_DIV2, CLK_PLL3, 2, 1),
+ DEF_FIXED(".pll5_div2", CLK_PLL5_DIV2, CLK_PLL5, 2, 1),
+ DEF_FIXED(".pll5_div4", CLK_PLL5_DIV4, CLK_PLL5_DIV2, 2, 1),
+ DEF_FIXED(".pll6_div2", CLK_PLL6_DIV2, CLK_PLL6, 2, 1),
+ DEF_FIXED(".s0", CLK_S0, CLK_PLL1_DIV2, 2, 1),
+ DEF_BASE(".sdsrc", CLK_SDSRC, CLK_TYPE_GEN4_SDSRC, CLK_PLL5),
+ DEF_RATE(".oco", CLK_OCO, 32768),
+
+ DEF_BASE(".rpcsrc", CLK_RPCSRC, CLK_TYPE_GEN4_RPCSRC, CLK_PLL5),
+ DEF_BASE(".rpc", R8A779F0_CLK_RPC, CLK_TYPE_GEN4_RPC, CLK_RPCSRC),
+ DEF_BASE("rpcd2", R8A779F0_CLK_RPCD2, CLK_TYPE_GEN4_RPCD2, R8A779F0_CLK_RPC),
+
+ /* Core Clock Outputs */
+ DEF_FIXED("s0d2", R8A779F0_CLK_S0D2, CLK_S0, 2, 1),
+ DEF_FIXED("s0d3", R8A779F0_CLK_S0D3, CLK_S0, 3, 1),
+ DEF_FIXED("s0d4", R8A779F0_CLK_S0D4, CLK_S0, 4, 1),
+ DEF_FIXED("cl16m", R8A779F0_CLK_CL16M, CLK_S0, 48, 1),
+ DEF_FIXED("s0d2_mm", R8A779F0_CLK_S0D2_MM, CLK_S0, 2, 1),
+ DEF_FIXED("s0d3_mm", R8A779F0_CLK_S0D3_MM, CLK_S0, 3, 1),
+ DEF_FIXED("s0d4_mm", R8A779F0_CLK_S0D4_MM, CLK_S0, 4, 1),
+ DEF_FIXED("cl16m_mm", R8A779F0_CLK_CL16M_MM, CLK_S0, 48, 1),
+ DEF_FIXED("s0d2_rt", R8A779F0_CLK_S0D2_RT, CLK_S0, 2, 1),
+ DEF_FIXED("s0d3_rt", R8A779F0_CLK_S0D3_RT, CLK_S0, 3, 1),
+ DEF_FIXED("s0d4_rt", R8A779F0_CLK_S0D4_RT, CLK_S0, 4, 1),
+ DEF_FIXED("s0d6_rt", R8A779F0_CLK_S0D6_RT, CLK_S0, 6, 1),
+ DEF_FIXED("cl16m_rt", R8A779F0_CLK_CL16M_RT, CLK_S0, 48, 1),
+ DEF_FIXED("s0d3_per", R8A779F0_CLK_S0D3_PER, CLK_S0, 3, 1),
+ DEF_FIXED("s0d6_per", R8A779F0_CLK_S0D6_PER, CLK_S0, 6, 1),
+ DEF_FIXED("s0d12_per", R8A779F0_CLK_S0D12_PER, CLK_S0, 12, 1),
+ DEF_FIXED("s0d24_per", R8A779F0_CLK_S0D24_PER, CLK_S0, 24, 1),
+ DEF_FIXED("cl16m_per", R8A779F0_CLK_CL16M_PER, CLK_S0, 48, 1),
+ DEF_FIXED("s0d2_hsc", R8A779F0_CLK_S0D2_HSC, CLK_S0, 2, 1),
+ DEF_FIXED("s0d3_hsc", R8A779F0_CLK_S0D3_HSC, CLK_S0, 3, 1),
+ DEF_FIXED("s0d4_hsc", R8A779F0_CLK_S0D4_HSC, CLK_S0, 4, 1),
+ DEF_FIXED("s0d6_hsc", R8A779F0_CLK_S0D6_HSC, CLK_S0, 6, 1),
+ DEF_FIXED("s0d12_hsc", R8A779F0_CLK_S0D12_HSC, CLK_S0, 12, 1),
+ DEF_FIXED("cl16m_hsc", R8A779F0_CLK_CL16M_HSC, CLK_S0, 48, 1),
+ DEF_FIXED("s0d2_cc", R8A779F0_CLK_S0D2_CC, CLK_S0, 2, 1),
+ DEF_FIXED("rsw2", R8A779F0_CLK_RSW2, CLK_PLL5, 2, 1),
+ DEF_FIXED("cbfusa", R8A779F0_CLK_CBFUSA, CLK_EXTAL, 2, 1),
+ DEF_FIXED("cpex", R8A779F0_CLK_CPEX, CLK_EXTAL, 2, 1),
+
+ DEF_GEN4_SD("sd0", R8A779F0_CLK_SD0, CLK_SDSRC, 0x870),
+ DEF_DIV6P1("mso", R8A779F0_CLK_MSO, CLK_PLL5_DIV4, 0x87c),
+
+ DEF_GEN4_OSC("osc", R8A779F0_CLK_OSC, CLK_EXTAL, 8),
+ DEF_GEN4_MDSEL("r", R8A779F0_CLK_R, 29, CLK_EXTALR, 1, CLK_OCO, 1),
+};
+
+static const struct mssr_mod_clk r8a779f0_mod_clks[] __initconst = {
+ DEF_MOD("scif0", 702, R8A779F0_CLK_S0D12_PER),
+ DEF_MOD("scif1", 703, R8A779F0_CLK_S0D12_PER),
+ DEF_MOD("scif3", 704, R8A779F0_CLK_S0D12_PER),
+ DEF_MOD("scif4", 705, R8A779F0_CLK_S0D12_PER),
+};
+
+/*
+ * CPG Clock Data
+ */
+/*
+ * MD EXTAL PLL1 PLL2 PLL3 PLL5 PLL6 OSC
+ * 14 13 (MHz)
+ * ----------------------------------------------------------------
+ * 0 0 16 / 1 x200 x150 x200 x200 x134 /15
+ * 0 1 20 / 1 x160 x120 x160 x160 x106 /19
+ * 1 0 Prohibited setting
+ * 1 1 40 / 2 x160 x120 x160 x160 x106 /38
+ */
+#define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 13) | \
+ (((md) & BIT(13)) >> 13))
+
+static const struct rcar_gen4_cpg_pll_config cpg_pll_configs[4] = {
+ /* EXTAL div PLL1 mult/div PLL2 mult/div PLL3 mult/div PLL5 mult/div PLL6 mult/div OSC prediv */
+ { 1, 200, 1, 150, 1, 200, 1, 200, 1, 134, 1, 15, },
+ { 1, 160, 1, 120, 1, 160, 1, 160, 1, 106, 1, 19, },
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
+ { 2, 160, 1, 120, 1, 160, 1, 160, 1, 106, 1, 38, },
+};
+
+static int __init r8a779f0_cpg_mssr_init(struct device *dev)
+{
+ const struct rcar_gen4_cpg_pll_config *cpg_pll_config;
+ u32 cpg_mode;
+ int error;
+
+ error = rcar_rst_read_mode_pins(&cpg_mode);
+ if (error)
+ return error;
+
+ cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
+ if (!cpg_pll_config->extal_div) {
+ dev_err(dev, "Prohibited setting (cpg_mode=0x%x)\n", cpg_mode);
+ return -EINVAL;
+ }
+
+ return rcar_gen4_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode);
+}
+
+const struct cpg_mssr_info r8a779f0_cpg_mssr_info __initconst = {
+ /* Core Clocks */
+ .core_clks = r8a779f0_core_clks,
+ .num_core_clks = ARRAY_SIZE(r8a779f0_core_clks),
+ .last_dt_core_clk = LAST_DT_CORE_CLK,
+ .num_total_core_clks = MOD_CLK_BASE,
+
+ /* Module Clocks */
+ .mod_clks = r8a779f0_mod_clks,
+ .num_mod_clks = ARRAY_SIZE(r8a779f0_mod_clks),
+ .num_hw_mod_clks = 28 * 32,
+
+ /* Callbacks */
+ .init = r8a779f0_cpg_mssr_init,
+ .cpg_clk_register = rcar_gen4_cpg_clk_register,
+
+ .reg_layout = CLK_REG_LAYOUT_RCAR_GEN4,
+};