The DA9062 watchdog occasionally enters error condition and resets the system if the timeout is changed quickly after the timer was enabled. The method of disabling and waiting for > 150 µs before setting the new timeout is taken from the DA9052 driver. Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx> --- drivers/watchdog/da9062_wdt.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/watchdog/da9062_wdt.c b/drivers/watchdog/da9062_wdt.c index b95719b349e5c..d43e0c46e23fb 100644 --- a/drivers/watchdog/da9062_wdt.c +++ b/drivers/watchdog/da9062_wdt.c @@ -100,6 +100,13 @@ static int da9062_wdt_update_timeout_register(struct da9062_watchdog *wdt, if (ret) return ret; + regmap_update_bits(chip->regmap, + DA9062AA_CONTROL_D, + DA9062AA_TWDSCALE_MASK, + DA9062_TWDSCALE_DISABLE); + + usleep_range(150, 300); + return regmap_update_bits(chip->regmap, DA9062AA_CONTROL_D, DA9062AA_TWDSCALE_MASK, -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-watchdog" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
