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
