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| author | Markus Pargmann <mpa@pengutronix.de> | 2015-04-09 15:31:56 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2015-04-13 08:35:54 +0200 |
| commit | 4cc0a3d9c547b452755ae2c0300d601473696591 (patch) | |
| tree | 7f8fcbcef23a1fcea421a31bf63f007f2c24ba7e /drivers | |
| parent | 564a6092bad55616b21551b3d418e108998966dd (diff) | |
| download | barebox-4cc0a3d9c547b452755ae2c0300d601473696591.tar.gz barebox-4cc0a3d9c547b452755ae2c0300d601473696591.tar.xz | |
wdog: imx-wd: Disable watchdog powerdown counter
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 <mpa@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/watchdog/imxwd.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/watchdog/imxwd.c b/drivers/watchdog/imxwd.c index 6e9edd9d81..221ad93107 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; } |