From cb34f8c81d5c5e405a98038e1483a3df37caa7fe Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Sun, 23 Dec 2007 03:09:31 +0100 Subject: [PATCH] [ARM] 4721/1: S3C24XX: Ensure watchdog clock is enbaled for hard reset If the hard reset routine is using the watchdog, then ensure that the clock for the watchdog has been enabled before we try and issue a reset. Signed-off-by: Ben Dooks Signed-off-by: Russell King --- include/asm-arm/arch-s3c2410/system.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/asm-arm/arch-s3c2410/system.h b/include/asm-arm/arch-s3c2410/system.h index 63891786dfa03..cb9cd9fb86110 100644 --- a/include/asm-arm/arch-s3c2410/system.h +++ b/include/asm-arm/arch-s3c2410/system.h @@ -20,6 +20,9 @@ #include #include +#include +#include + void (*s3c24xx_idle)(void); void (*s3c24xx_reset_hook)(void); @@ -59,6 +62,8 @@ static void arch_idle(void) static void arch_reset(char mode) { + struct clk *wdtclk; + if (mode == 's') { cpu_reset(0); } @@ -70,6 +75,12 @@ arch_reset(char mode) __raw_writel(0, S3C2410_WTCON); /* disable watchdog, to be safe */ + wdtclk = clk_get(NULL, "watchdog"); + if (!IS_ERR(wdtclk)) { + clk_enable(wdtclk); + } else + printk(KERN_WARNING "%s: warning: cannot get watchdog clock\n", __func__); + /* put initial values into count and data */ __raw_writel(0x100, S3C2410_WTCNT); __raw_writel(0x100, S3C2410_WTDAT); -- 2.39.5