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SAMA5 WDT driver is now functional

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This commit is contained in:
Gregory Nutt 2013-10-20 09:24:30 -06:00
parent fe425e18a6
commit 1e2c37c04f
1 changed files with 12 additions and 4 deletions
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16
arch/arm/src/sama5/sam_wdt.c
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@ -452,7 +452,7 @@ static int sam_settimeout(FAR struct watchdog_lowerhalf_s *lower,
{ {
FAR struct sam_lowerhalf_s *priv = (FAR struct sam_lowerhalf_s *)lower; FAR struct sam_lowerhalf_s *priv = (FAR struct sam_lowerhalf_s *)lower;
uint32_t reload; uint32_t reload;
uint16_t regval; uint32_t regval;
DEBUGASSERT(priv); DEBUGASSERT(priv);
wdvdbg("Entry: timeout=%d\n", timeout); wdvdbg("Entry: timeout=%d\n", timeout);
@ -511,9 +511,12 @@ static int sam_settimeout(FAR struct watchdog_lowerhalf_s *lower,
regval |= WDT_MR_WDFIEN; regval |= WDT_MR_WDFIEN;
#else #else
/* Reset (everything) if the watchdog timer expires */ /* Reset (everything) if the watchdog timer expires.
*
* REVISIT: Set WDT_MR_WDRPROC so that only the processor is reset?
*/
regval |= WDT_MR_WDFIEN; regval |= WDT_MR_WDRSTEN;
#endif #endif
#ifdef CONFIG_SAMA5_WDT_DEBUGHALT #ifdef CONFIG_SAMA5_WDT_DEBUGHALT
@ -535,6 +538,11 @@ static int sam_settimeout(FAR struct watchdog_lowerhalf_s *lower,
*/ */
priv->started = true; priv->started = true;
wdvdbg("Setup: CR: %08x MR: %08x SR: %08x\n",
sam_getreg(SAM_WDT_CR), sam_getreg(SAM_WDT_MR),
sam_getreg(SAM_WDT_SR));
return OK; return OK;
} }
@ -666,7 +674,7 @@ int up_wdginitialize(void)
* case. * case.
*/ */
DEBUGASSERT((sam_getreg(SAM_WDT_MR) & WDT_MR_WDDIS) != 0); DEBUGASSERT((sam_getreg(SAM_WDT_MR) & WDT_MR_WDDIS) == 0);
/* No clock setup is required. The Watchdog Timer uses the Slow Clock /* No clock setup is required. The Watchdog Timer uses the Slow Clock
* divided by 128 to establish the maximum Watchdog period to be 16 seconds * divided by 128 to establish the maximum Watchdog period to be 16 seconds