Signed-off-by: Juergen Beisert <j...@pengutronix.de> --- drivers/watchdog/im28wd.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+)
diff --git a/drivers/watchdog/im28wd.c b/drivers/watchdog/im28wd.c index b016910..eb6099a 100644 --- a/drivers/watchdog/im28wd.c +++ b/drivers/watchdog/im28wd.c @@ -21,6 +21,7 @@ #include <errno.h> #include <malloc.h> #include <watchdog.h> +#include <reset_source.h> #define MXS_RTC_CTRL 0x0 #define MXS_RTC_SET_ADDR 0x4 @@ -73,6 +74,27 @@ static int imx28_watchdog_set_timeout(struct watchdog *wd, unsigned timeout) return 0; } +static void __maybe_unused imx28_detect_reset_source(const struct imx28_wd *p) +{ + u32 reg; + + reg = readl(p->regs + MXS_RTC_PERSISTENT0); + if (reg & MXS_RTC_PERSISTENT0_EXT_RST) { + writel(MXS_RTC_PERSISTENT0_EXT_RST, + p->regs + MXS_RTC_PERSISTENT0 + MXS_RTC_CLR_ADDR); + set_reset_source(RESET_POR); + return; + } + if (reg & MXS_RTC_PERSISTENT0_THM_RST) { + writel(MXS_RTC_PERSISTENT0_THM_RST, + p->regs + MXS_RTC_PERSISTENT0 + MXS_RTC_CLR_ADDR); + set_reset_source(RESET_RST); + return; + } + + set_reset_source(RESET_RST); +} + static int imx28_wd_probe(struct device_d *dev) { struct imx28_wd *priv; @@ -94,6 +116,9 @@ static int imx28_wd_probe(struct device_d *dev) if (rc != 0) goto on_error; + if (IS_ENABLED(CONFIG_GLOBALVAR)) + imx28_detect_reset_source(priv); + dev->priv = priv; return 0; -- 1.7.10.4 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox