diff --git a/drivers/watchdog/loongson2_wdt.c b/drivers/watchdog/loongson2_wdt.c
index 83252edf3..3648e8c1c 100644
--- a/drivers/watchdog/loongson2_wdt.c
+++ b/drivers/watchdog/loongson2_wdt.c
@@ -29,7 +29,9 @@ struct ls2x_wdt_drvdata {
 static int ls2x_wdt_ping(struct watchdog_device *wdt_dev)
 {
 	struct ls2x_wdt_drvdata *drvdata = watchdog_get_drvdata(wdt_dev);
+	u8 wd_en = 1;
 
+	writel((1 << wd_en), drvdata->base + RST_CTR);
 	writel(0x1, drvdata->base + WD_CR);
 
 	return 0;