diff options
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/wdt-uclass.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/watchdog/wdt-uclass.c b/drivers/watchdog/wdt-uclass.c index c96a596f08..4cdb7bd64c 100644 --- a/drivers/watchdog/wdt-uclass.c +++ b/drivers/watchdog/wdt-uclass.c @@ -16,6 +16,12 @@ DECLARE_GLOBAL_DATA_PTR; #define WATCHDOG_TIMEOUT_SECS (CONFIG_WATCHDOG_TIMEOUT_MSECS / 1000) +/* + * Reset every 1000ms, or however often is required as indicated by a + * hw_margin_ms property. + */ +static ulong reset_period = 1000; + int initr_watchdog(void) { u32 timeout = WATCHDOG_TIMEOUT_SECS; @@ -37,6 +43,9 @@ int initr_watchdog(void) if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) { timeout = dev_read_u32_default(gd->watchdog_dev, "timeout-sec", WATCHDOG_TIMEOUT_SECS); + reset_period = dev_read_u32_default(gd->watchdog_dev, + "hw_margin_ms", + 4 * reset_period) / 4; } wdt_start(gd->watchdog_dev, timeout * 1000, 0); @@ -118,7 +127,7 @@ void watchdog_reset(void) /* Do not reset the watchdog too often */ now = get_timer(0); if (time_after(now, next_reset)) { - next_reset = now + 1000; /* reset every 1000ms */ + next_reset = now + reset_period; wdt_reset(gd->watchdog_dev); } } |