BCM2835 watchdog timeout can be set to maximum 15 seconds (0xffffff >> 16).
---
drivers/watchdog/bcm2835_wdt.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/watchdog/bcm2835_wdt.c b/drivers/watchdog/bcm2835_wdt.c
index d0c51ed9e..781626fa0 100644
--- a/drivers/watchdog/bcm2835_wdt.c
+++ b/drivers/watchdog/bcm2835_wdt.c
@@ -45,6 +45,10 @@
#define SECS_TO_WDOG_TICKS(x) ((x) << 16)
+/* Largest value where SECS_TO_WDOG_TICKS doesn't overflow 20 bits
+ * (PM_WDOG_TIME_SET) */
+#define WDOG_SECS_MAX 15
+
struct bcm2835_wd {
struct watchdog wd;
void __iomem *base;
@@ -101,6 +105,7 @@ static int bcm2835_wd_probe(struct device_d *dev)
}
priv->base = IOMEM(iores->start);
priv->wd.set_timeout = bcm2835_wd_set_timeout;
+ priv->wd.timeout_max = WDOG_SECS_MAX;
priv->wd.hwdev = dev;
priv->dev = dev;
--
2.11.0
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