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authorLinus Torvalds <torvalds@linux-foundation.org>2012-05-26 23:42:29 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-26 23:42:29 +0400
commit27953437059c64d14086196eb96f43c78caa9db3 (patch)
tree0cfd5fb21262a6db3de0c64462847b4c0c43e9df /arch/arm/mach-dove/common.c
parent2c757fd5d1a92086f225a75a8fac7cab242d11b0 (diff)
parent3c0dec5f58b3c7b3627715126d1bf9b030a076f0 (diff)
downloadlinux-27953437059c64d14086196eb96f43c78caa9db3.tar.xz
Merge tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm-soc clock driver changes from Olof Johansson: "The new clock subsystem was merged in linux-3.4 without any users, this now moves the first three platforms over to it: imx, mxs and spear. The series also contains the changes for the clock subsystem itself, since Mike preferred to have it together with the platforms that require these changes, in order to avoid interdependencies and conflicts." Fix up trivial conflicts in arch/arm/mach-kirkwood/common.c (code removed in one branch, added OF support in another) and drivers/dma/imx-sdma.c (independent changes next to each other). * tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (97 commits) clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate(). clk: Provide dummy clk_unregister() SPEAr: Update defconfigs SPEAr: Add SMI NOR partition info in dts files SPEAr: Switch to common clock framework SPEAr: Call clk_prepare() before calling clk_enable SPEAr: clk: Add General Purpose Timer Synthesizer clock SPEAr: clk: Add Fractional Synthesizer clock SPEAr: clk: Add Auxiliary Synthesizer clock SPEAr: clk: Add VCO-PLL Synthesizer clock SPEAr: Add DT bindings for SPEAr's timer ARM i.MX: remove now unused clock files ARM: i.MX6: implement clocks using common clock framework ARM i.MX35: implement clocks using common clock framework ARM i.MX5: implement clocks using common clock framework ARM: Kirkwood: Replace clock gating ARM: Orion: Audio: Add clk/clkdev support ARM: Orion: PCIE: Add support for clk ARM: Orion: XOR: Add support for clk ARM: Orion: CESA: Add support for clk ...
Diffstat (limited to 'arch/arm/mach-dove/common.c')
-rw-r--r--arch/arm/mach-dove/common.c39
1 files changed, 25 insertions, 14 deletions
diff --git a/arch/arm/mach-dove/common.c b/arch/arm/mach-dove/common.c
index 42ab1e7c4ecc..9493076fc594 100644
--- a/arch/arm/mach-dove/common.c
+++ b/arch/arm/mach-dove/common.c
@@ -13,7 +13,7 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
-#include <linux/clk.h>
+#include <linux/clk-provider.h>
#include <linux/ata_platform.h>
#include <linux/gpio.h>
#include <asm/page.h>
@@ -68,6 +68,19 @@ void __init dove_map_io(void)
}
/*****************************************************************************
+ * CLK tree
+ ****************************************************************************/
+static struct clk *tclk;
+
+static void __init clk_init(void)
+{
+ tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT,
+ get_tclk());
+
+ orion_clkdev_init(tclk);
+}
+
+/*****************************************************************************
* EHCI0
****************************************************************************/
void __init dove_ehci0_init(void)
@@ -89,8 +102,7 @@ void __init dove_ehci1_init(void)
void __init dove_ge00_init(struct mv643xx_eth_platform_data *eth_data)
{
orion_ge00_init(eth_data,
- DOVE_GE00_PHYS_BASE, IRQ_DOVE_GE00_SUM,
- 0, get_tclk());
+ DOVE_GE00_PHYS_BASE, IRQ_DOVE_GE00_SUM, 0);
}
/*****************************************************************************
@@ -116,7 +128,7 @@ void __init dove_sata_init(struct mv_sata_platform_data *sata_data)
void __init dove_uart0_init(void)
{
orion_uart0_init(DOVE_UART0_VIRT_BASE, DOVE_UART0_PHYS_BASE,
- IRQ_DOVE_UART_0, get_tclk());
+ IRQ_DOVE_UART_0, tclk);
}
/*****************************************************************************
@@ -125,7 +137,7 @@ void __init dove_uart0_init(void)
void __init dove_uart1_init(void)
{
orion_uart1_init(DOVE_UART1_VIRT_BASE, DOVE_UART1_PHYS_BASE,
- IRQ_DOVE_UART_1, get_tclk());
+ IRQ_DOVE_UART_1, tclk);
}
/*****************************************************************************
@@ -134,7 +146,7 @@ void __init dove_uart1_init(void)
void __init dove_uart2_init(void)
{
orion_uart2_init(DOVE_UART2_VIRT_BASE, DOVE_UART2_PHYS_BASE,
- IRQ_DOVE_UART_2, get_tclk());
+ IRQ_DOVE_UART_2, tclk);
}
/*****************************************************************************
@@ -143,7 +155,7 @@ void __init dove_uart2_init(void)
void __init dove_uart3_init(void)
{
orion_uart3_init(DOVE_UART3_VIRT_BASE, DOVE_UART3_PHYS_BASE,
- IRQ_DOVE_UART_3, get_tclk());
+ IRQ_DOVE_UART_3, tclk);
}
/*****************************************************************************
@@ -151,12 +163,12 @@ void __init dove_uart3_init(void)
****************************************************************************/
void __init dove_spi0_init(void)
{
- orion_spi_init(DOVE_SPI0_PHYS_BASE, get_tclk());
+ orion_spi_init(DOVE_SPI0_PHYS_BASE);
}
void __init dove_spi1_init(void)
{
- orion_spi_1_init(DOVE_SPI1_PHYS_BASE, get_tclk());
+ orion_spi_1_init(DOVE_SPI1_PHYS_BASE);
}
/*****************************************************************************
@@ -272,18 +284,17 @@ void __init dove_sdio1_init(void)
void __init dove_init(void)
{
- int tclk;
-
- tclk = get_tclk();
-
printk(KERN_INFO "Dove 88AP510 SoC, ");
- printk(KERN_INFO "TCLK = %dMHz\n", (tclk + 499999) / 1000000);
+ printk(KERN_INFO "TCLK = %dMHz\n", (get_tclk() + 499999) / 1000000);
#ifdef CONFIG_CACHE_TAUROS2
tauros2_init();
#endif
dove_setup_cpu_mbus();
+ /* Setup root of clk tree */
+ clk_init();
+
/* internal devices that every board has */
dove_rtc_init();
dove_xor0_init();