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Diffstat (limited to 'include/asm-arm/arch-s3c2410/system.h')
-rw-r--r--include/asm-arm/arch-s3c2410/system.h20
1 files changed, 17 insertions, 3 deletions
diff --git a/include/asm-arm/arch-s3c2410/system.h b/include/asm-arm/arch-s3c2410/system.h
index 63891786dfa0..14de4e596f87 100644
--- a/include/asm-arm/arch-s3c2410/system.h
+++ b/include/asm-arm/arch-s3c2410/system.h
@@ -20,6 +20,9 @@
#include <asm/plat-s3c/regs-watchdog.h>
#include <asm/arch/regs-clock.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+
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);
}
@@ -70,19 +75,28 @@ 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);
+ __raw_writel(0x80, S3C2410_WTCNT);
+ __raw_writel(0x80, S3C2410_WTDAT);
/* set the watchdog to go and reset... */
__raw_writel(S3C2410_WTCON_ENABLE|S3C2410_WTCON_DIV16|S3C2410_WTCON_RSTEN |
S3C2410_WTCON_PRESCALE(0x20), S3C2410_WTCON);
/* wait for reset to assert... */
- mdelay(5000);
+ mdelay(500);
printk(KERN_ERR "Watchdog reset failed to assert reset\n");
+ /* delay to allow the serial port to show the message */
+ mdelay(50);
+
/* we'll take a jump through zero as a poor second */
cpu_reset(0);
}