Disable the watchdog powerdown counter at start. Otherwise this may trigger a reset or poweroff over the WDOG_B line to a PMIC. This counter is set to 16 seconds after poweron.
Signed-off-by: Markus Pargmann <[email protected]> --- drivers/watchdog/imxwd.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/watchdog/imxwd.c b/drivers/watchdog/imxwd.c index 42edfe00d2bc..3479d7b02da7 100644 --- a/drivers/watchdog/imxwd.c +++ b/drivers/watchdog/imxwd.c @@ -46,6 +46,7 @@ struct imx_wd { #define IMX21_WDOG_WCR 0x00 /* Watchdog Control Register */ #define IMX21_WDOG_WSR 0x02 /* Watchdog Service Register */ #define IMX21_WDOG_WSTR 0x04 /* Watchdog Status Register */ +#define IMX21_WDOG_WMCR 0x08 /* Misc Register */ #define IMX21_WDOG_WCR_WDE (1 << 2) #define IMX21_WDOG_WCR_SRS (1 << 4) #define IMX21_WDOG_WCR_WDA (1 << 5) @@ -158,6 +159,11 @@ static int imx21_wd_init(struct imx_wd *priv) { imx_watchdog_detect_reset_source(priv); + /* + * Disable watchdog powerdown counter + */ + writew(0x0, priv->base + IMX21_WDOG_WMCR); + return 0; } -- 2.1.4 _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
