From fdcaab7abf3b4ced5f4dddf4d361351992756147 Mon Sep 17 00:00:00 2001 From: Eugen Hristev Date: Wed, 8 May 2019 14:15:03 +0000 Subject: watchdog: sama5d4: fix WDD value to be always set to max commit 8632944841d41a36d77dd1fa88d4201b5291100f upstream. 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: Eugen Hristev Reviewed-by: Guenter Roeck Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck Signed-off-by: Lee Jones Signed-off-by: Greg Kroah-Hartman --- drivers/watchdog/sama5d4_wdt.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers/watchdog/sama5d4_wdt.c') diff --git a/drivers/watchdog/sama5d4_wdt.c b/drivers/watchdog/sama5d4_wdt.c index 0ae947c3d7bc..d8cf2039c6a4 100644 --- a/drivers/watchdog/sama5d4_wdt.c +++ b/drivers/watchdog/sama5d4_wdt.c @@ -111,9 +111,7 @@ 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 @@ -255,7 +253,7 @@ 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); -- cgit v1.2.3