watchdog: sama5d4: fix WDD value to be always set to max (86329448) · Commits · 戴 / test

WDD value must be always set to max (0xFFF) otherwise the hardware block will reset the board on the first ping of the watchdog. Signed-off-by:

drivers/watchdog/sama5d4_wdt.c

+1 −3

Original line number	Diff line number	Diff line
		@@ -110,9 +110,7 @@ static int sama5d4_wdt_set_timeout(struct watchdog_device *wdd,
		u32 value = WDT_SEC2TICKS(timeout);

		wdt->mr &= ~AT91_WDT_WDV;
		wdt->mr &= ~AT91_WDT_WDD;
		wdt->mr \|= AT91_WDT_SET_WDV(value);
		wdt->mr \|= AT91_WDT_SET_WDD(value);

		/*
		* WDDIS has to be 0 when updating WDD/WDV. The datasheet states: When
		@@ -248,7 +246,7 @@ static int sama5d4_wdt_probe(struct platform_device *pdev)

		timeout = WDT_SEC2TICKS(wdd->timeout);

		wdt->mr \|= AT91_WDT_SET_WDD(timeout);
		wdt->mr \|= AT91_WDT_SET_WDD(WDT_SEC2TICKS(MAX_WDT_TIMEOUT));
		wdt->mr \|= AT91_WDT_SET_WDV(timeout);

		ret = sama5d4_wdt_init(wdt);