davinci: Fix watchdog reset code
The davinci reset routine, davinci_watchdog_reset(), sets the
TCR register instead of the TGCR register as it should to put
the WDT into its "Initial State".
It also writes the WDTCR register without the proper WDKEY
which is pointless since the register will be write-protected.
Signed-off-by: David Griego <dgriego@mvista.com>
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
diff --git a/arch/arm/mach-davinci/time.c b/arch/arm/mach-davinci/time.c
index 0884ca5..ca85d18 100644
--- a/arch/arm/mach-davinci/time.c
+++ b/arch/arm/mach-davinci/time.c
@@ -420,11 +420,11 @@
/* reset timer, set mode to 64-bit watchdog, and unreset */
tgcr = 0;
- __raw_writel(tgcr, base + TCR);
+ __raw_writel(tgcr, base + TGCR);
tgcr = TGCR_TIMMODE_64BIT_WDOG << TGCR_TIMMODE_SHIFT;
tgcr |= (TGCR_UNRESET << TGCR_TIM12RS_SHIFT) |
(TGCR_UNRESET << TGCR_TIM34RS_SHIFT);
- __raw_writel(tgcr, base + TCR);
+ __raw_writel(tgcr, base + TGCR);
/* clear counter and period regs */
__raw_writel(0, base + TIM12);
@@ -432,12 +432,8 @@
__raw_writel(0, base + PRD12);
__raw_writel(0, base + PRD34);
- /* enable */
- wdtcr = __raw_readl(base + WDTCR);
- wdtcr |= WDTCR_WDEN_ENABLE << WDTCR_WDEN_SHIFT;
- __raw_writel(wdtcr, base + WDTCR);
-
/* put watchdog in pre-active state */
+ wdtcr = __raw_readl(base + WDTCR);
wdtcr = (WDTCR_WDKEY_SEQ0 << WDTCR_WDKEY_SHIFT) |
(WDTCR_WDEN_ENABLE << WDTCR_WDEN_SHIFT);
__raw_writel(wdtcr, base + WDTCR);