diff options
| author | Stefan Roese <sr@denx.de> | 2007-02-07 09:45:55 +0100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-02-08 16:08:30 +1100 |
| commit | f31909c00332b3e8299209eaba6cec80756f802c (patch) | |
| tree | f80e89d5ecd90c54e5bb079d8d175e9e2b57fbf9 | |
| parent | 2366fb16abcd8dea96820d3cb4f1de3a868d268c (diff) | |
| download | linux-f31909c00332b3e8299209eaba6cec80756f802c.tar.bz2 | |
[POWERPC] ppc: Fix booke watchdog initialization
Fix two problems in the book-e watchdog driver.
a) The 4xx default period was defined wrong
b) Clear status before enabling the watchdog exception
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
| -rw-r--r-- | drivers/char/watchdog/booke_wdt.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/char/watchdog/booke_wdt.c b/drivers/char/watchdog/booke_wdt.c index 488902231cc2..0e23f29f71ab 100644 --- a/drivers/char/watchdog/booke_wdt.c +++ b/drivers/char/watchdog/booke_wdt.c @@ -35,7 +35,7 @@ #ifdef CONFIG_FSL_BOOKE #define WDT_PERIOD_DEFAULT 63 /* Ex. wdt_period=28 bus=333Mhz , reset=~40sec */ #else -#define WDT_PERIOD_DEFAULT 4 /* Refer to the PPC40x and PPC4xx manuals */ +#define WDT_PERIOD_DEFAULT 3 /* Refer to the PPC40x and PPC4xx manuals */ #endif /* for timing information */ u32 booke_wdt_enabled = 0; @@ -48,12 +48,22 @@ u32 booke_wdt_period = WDT_PERIOD_DEFAULT; #endif /* + * booke_wdt_ping: + */ +static __inline__ void booke_wdt_ping(void) +{ + mtspr(SPRN_TSR, TSR_ENW|TSR_WIS); +} + +/* * booke_wdt_enable: */ static __inline__ void booke_wdt_enable(void) { u32 val; + /* clear status before enabling watchdog */ + booke_wdt_ping(); val = mfspr(SPRN_TCR); val |= (TCR_WIE|TCR_WRC(WRC_CHIP)|WDTP(booke_wdt_period)); @@ -61,14 +71,6 @@ static __inline__ void booke_wdt_enable(void) } /* - * booke_wdt_ping: - */ -static __inline__ void booke_wdt_ping(void) -{ - mtspr(SPRN_TSR, TSR_ENW|TSR_WIS); -} - -/* * booke_wdt_write: */ static ssize_t booke_wdt_write (struct file *file, const char __user *buf, |