diff options
Diffstat (limited to 'drivers/watchdog')
-rw-r--r-- | drivers/watchdog/im28wd.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/watchdog/im28wd.c b/drivers/watchdog/im28wd.c index ca32a729d2..bc19369782 100644 --- a/drivers/watchdog/im28wd.c +++ b/drivers/watchdog/im28wd.c @@ -82,6 +82,17 @@ static void __maybe_unused imx28_detect_reset_source(const struct imx28_wd *p) if (reg & MXS_RTC_PERSISTENT0_EXT_RST) { writel(MXS_RTC_PERSISTENT0_EXT_RST, p->regs + MXS_RTC_PERSISTENT0 + MXS_RTC_CLR_ADDR); + /* + * if the RTC has woken up the SoC, additionally the ALARM_WAKE + * bit is set. This bit should have precedence, because it + * reports the real event, why we are here. + */ + if (reg & MXS_RTC_PERSISTENT0_ALARM_WAKE) { + writel(MXS_RTC_PERSISTENT0_ALARM_WAKE, + p->regs + MXS_RTC_PERSISTENT0 + MXS_RTC_CLR_ADDR); + set_reset_source(RESET_WKE); + return; + } set_reset_source(RESET_POR); return; } |