From: Lingling Xu <[email protected]>
When rebooting the system, we should lock the watchdog after
configuration to make sure the watchdog can reboot the system
successfully.
Signed-off-by: Lingling Xu <[email protected]>
Signed-off-by: Baolin Wang <[email protected]>
---
drivers/spi/spi-sprd-adi.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/spi/spi-sprd-adi.c b/drivers/spi/spi-sprd-adi.c
index 9a05128..9613cfe 100644
--- a/drivers/spi/spi-sprd-adi.c
+++ b/drivers/spi/spi-sprd-adi.c
@@ -393,6 +393,9 @@ static int sprd_adi_restart_handler(struct notifier_block *this,
val |= BIT_WDG_RUN | BIT_WDG_RST;
sprd_adi_write(sadi, sadi->slave_pbase + REG_WDG_CTRL, val);
+ /* Lock the watchdog */
+ sprd_adi_write(sadi, sadi->slave_pbase + REG_WDG_LOCK, ~WDG_UNLOCK_KEY);
+
mdelay(1000);
dev_emerg(sadi->dev, "Unable to restart system\n");
--
1.7.9.5