From c1e31d126b4db6a3a8d96883fae40fe22d5eba65 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Fri, 10 May 2013 10:19:01 +0800 Subject: 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 --- arch/arm/mach-imx/common.h | 1 + arch/arm/mach-imx/imx25-dt.c | 3 +-- arch/arm/mach-imx/imx27-dt.c | 3 +-- arch/arm/mach-imx/imx31-dt.c | 3 +-- arch/arm/mach-imx/imx51-dt.c | 3 +-- arch/arm/mach-imx/mach-imx53.c | 2 +- arch/arm/mach-imx/system.c | 20 ++++++++++++++++++++ 7 files changed, 26 insertions(+), 9 deletions(-) (limited to 'arch/arm') diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h index c08ae3f99ce..963971e11f6 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 ec339917fbf..3e1ec5ffe63 100644 --- a/arch/arm/mach-imx/imx25-dt.c +++ b/arch/arm/mach-imx/imx25-dt.c @@ -15,12 +15,11 @@ #include #include #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 93aef1aa0a8..4e235ecb402 100644 --- a/arch/arm/mach-imx/imx27-dt.c +++ b/arch/arm/mach-imx/imx27-dt.c @@ -16,14 +16,13 @@ #include #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 d8b3b22aeba..818a1cc2fe4 100644 --- a/arch/arm/mach-imx/imx31-dt.c +++ b/arch/arm/mach-imx/imx31-dt.c @@ -16,12 +16,11 @@ #include #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 55f47a0f98c..53e43e579dd 100644 --- a/arch/arm/mach-imx/imx51-dt.c +++ b/arch/arm/mach-imx/imx51-dt.c @@ -17,14 +17,13 @@ #include #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 7a5656128b6..74e7b94c22e 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 02cf449094f..7cdc79a9657 100644 --- a/arch/arm/mach-imx/system.c +++ b/arch/arm/mach-imx/system.c @@ -21,6 +21,8 @@ #include #include #include +#include +#include #include #include @@ -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); +} -- cgit v1.2.3-70-g09d2