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/system.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'arch/arm/mach-imx/system.c') diff --git a/arch/arm/mach-imx/system.c b/arch/arm/mach-imx/system.c index 02cf449094f1..7cdc79a9657c 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