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author | Shawn Guo <shawn.guo@linaro.org> | 2013-05-10 10:19:01 +0800 |
---|---|---|
committer | Shawn Guo <shawn.guo@linaro.org> | 2013-06-17 15:45:10 +0800 |
commit | c1e31d126b4db6a3a8d96883fae40fe22d5eba65 (patch) | |
tree | 88dc2c60a53d0f6ad84545de3975f43b6b7b7b51 | |
parent | 18cb680f1a003a1a1ec0e6097d7b763516a27f04 (diff) | |
download | op-kernel-dev-c1e31d126b4db6a3a8d96883fae40fe22d5eba65.zip op-kernel-dev-c1e31d126b4db6a3a8d96883fae40fe22d5eba65.tar.gz |
ARM: imx: create mxc_arch_reset_init_dt() for DT boot
The mxc_arch_reset_init() uses static mapping and calls clk_get_sys() to
get clock. It's suitable for non-DT boot but not for DT boot where
dynamic mapping and of_clk_get() should be used instead. Create
mxc_arch_reset_init_dt() as the DT variant of mxc_arch_reset_init(),
and change DT platforms to use it.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
-rw-r--r-- | arch/arm/mach-imx/common.h | 1 | ||||
-rw-r--r-- | arch/arm/mach-imx/imx25-dt.c | 3 | ||||
-rw-r--r-- | arch/arm/mach-imx/imx27-dt.c | 3 | ||||
-rw-r--r-- | arch/arm/mach-imx/imx31-dt.c | 3 | ||||
-rw-r--r-- | arch/arm/mach-imx/imx51-dt.c | 3 | ||||
-rw-r--r-- | arch/arm/mach-imx/mach-imx53.c | 2 | ||||
-rw-r--r-- | arch/arm/mach-imx/system.c | 20 |
7 files changed, 26 insertions, 9 deletions
diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h index c08ae3f..963971e 100644 --- a/arch/arm/mach-imx/common.h +++ b/arch/arm/mach-imx/common.h @@ -74,6 +74,7 @@ extern struct platform_device *mxc_register_gpio(char *name, int id, extern void mxc_set_cpu_type(unsigned int type); extern void mxc_restart(char, const char *); extern void mxc_arch_reset_init(void __iomem *); +extern void mxc_arch_reset_init_dt(void); extern int mx53_revision(void); extern int imx6q_revision(void); extern int mx53_display_revision(void); diff --git a/arch/arm/mach-imx/imx25-dt.c b/arch/arm/mach-imx/imx25-dt.c index ec33991..3e1ec5f 100644 --- a/arch/arm/mach-imx/imx25-dt.c +++ b/arch/arm/mach-imx/imx25-dt.c @@ -15,12 +15,11 @@ #include <asm/mach/arch.h> #include <asm/mach/time.h> #include "common.h" -#include "hardware.h" #include "mx25.h" static void __init imx25_dt_init(void) { - mxc_arch_reset_init(MX25_IO_ADDRESS(MX25_WDOG_BASE_ADDR)); + mxc_arch_reset_init_dt(); of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); } diff --git a/arch/arm/mach-imx/imx27-dt.c b/arch/arm/mach-imx/imx27-dt.c index 93aef1a..4e235ec 100644 --- a/arch/arm/mach-imx/imx27-dt.c +++ b/arch/arm/mach-imx/imx27-dt.c @@ -16,14 +16,13 @@ #include <asm/mach/time.h> #include "common.h" -#include "hardware.h" #include "mx27.h" static void __init imx27_dt_init(void) { struct platform_device_info devinfo = { .name = "cpufreq-cpu0", }; - mxc_arch_reset_init(MX27_IO_ADDRESS(MX27_WDOG_BASE_ADDR)); + mxc_arch_reset_init_dt(); of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); diff --git a/arch/arm/mach-imx/imx31-dt.c b/arch/arm/mach-imx/imx31-dt.c index d8b3b22..818a1cc 100644 --- a/arch/arm/mach-imx/imx31-dt.c +++ b/arch/arm/mach-imx/imx31-dt.c @@ -16,12 +16,11 @@ #include <asm/mach/time.h> #include "common.h" -#include "hardware.h" #include "mx31.h" static void __init imx31_dt_init(void) { - mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR)); + mxc_arch_reset_init_dt(); of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); } diff --git a/arch/arm/mach-imx/imx51-dt.c b/arch/arm/mach-imx/imx51-dt.c index 55f47a0..53e43e5 100644 --- a/arch/arm/mach-imx/imx51-dt.c +++ b/arch/arm/mach-imx/imx51-dt.c @@ -17,14 +17,13 @@ #include <asm/mach/time.h> #include "common.h" -#include "hardware.h" #include "mx51.h" static void __init imx51_dt_init(void) { struct platform_device_info devinfo = { .name = "cpufreq-cpu0", }; - mxc_arch_reset_init(MX51_IO_ADDRESS(MX51_WDOG1_BASE_ADDR)); + mxc_arch_reset_init_dt(); of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); platform_device_register_full(&devinfo); diff --git a/arch/arm/mach-imx/mach-imx53.c b/arch/arm/mach-imx/mach-imx53.c index 7a56561..74e7b94 100644 --- a/arch/arm/mach-imx/mach-imx53.c +++ b/arch/arm/mach-imx/mach-imx53.c @@ -39,7 +39,7 @@ static void __init imx53_qsb_init(void) static void __init imx53_dt_init(void) { - mxc_arch_reset_init(MX53_IO_ADDRESS(MX53_WDOG1_BASE_ADDR)); + mxc_arch_reset_init_dt(); if (of_machine_is_compatible("fsl,imx53-qsb")) imx53_qsb_init(); diff --git a/arch/arm/mach-imx/system.c b/arch/arm/mach-imx/system.c index 02cf449..7cdc79a 100644 --- a/arch/arm/mach-imx/system.c +++ b/arch/arm/mach-imx/system.c @@ -21,6 +21,8 @@ #include <linux/io.h> #include <linux/err.h> #include <linux/delay.h> +#include <linux/of.h> +#include <linux/of_address.h> #include <asm/system_misc.h> #include <asm/proc-fns.h> @@ -75,3 +77,21 @@ void __init mxc_arch_reset_init(void __iomem *base) clk_prepare(wdog_clk); } + +void __init mxc_arch_reset_init_dt(void) +{ + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "fsl,imx21-wdt"); + wdog_base = of_iomap(np, 0); + WARN_ON(!wdog_base); + + wdog_clk = of_clk_get(np, 0); + if (IS_ERR(wdog_clk)) { + pr_warn("%s: failed to get wdog clock\n", __func__); + wdog_clk = NULL; + return; + } + + clk_prepare(wdog_clk); +} |