diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index e88c267..e430347 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -975,7 +975,7 @@
 	};
 
 	wdt-gpio-toggle {
-		gpios = <&gpio_a 7 0>;
+		gpios = <&gpio_a 8 0>;
 		compatible = "linux,wdt-gpio";
 		hw_margin_ms = <100>;
 		hw_algo = "toggle";
diff --git a/drivers/watchdog/npcm_wdt.c b/drivers/watchdog/npcm_wdt.c
index e56aa0e..57b6121 100644
--- a/drivers/watchdog/npcm_wdt.c
+++ b/drivers/watchdog/npcm_wdt.c
@@ -69,15 +69,21 @@
 static int npcm_wdt_reset(struct udevice *dev)
 {
 	struct npcm_wdt_priv *priv = dev_get_priv(dev);
+	u32 val;
 
-	writel(NPCM_WTR | NPCM_WTRE | NPCM_WTE, priv->regs);
+	val = readl(priv->regs);
+	writel(val | NPCM_WTR, priv->regs);
 
 	return 0;
 }
 
 static int npcm_wdt_expire_now(struct udevice *dev, ulong flags)
 {
-	return npcm_wdt_reset(dev);
+	struct npcm_wdt_priv *priv = dev_get_priv(dev);
+
+	writel(NPCM_WTR | NPCM_WTRE | NPCM_WTE, priv->regs);
+
+	return 0;
 }
 
 static int npcm_wdt_of_to_plat(struct udevice *dev)
diff --git a/test/dm/wdt.c b/test/dm/wdt.c
index 653d7b1..2bbebcd 100644
--- a/test/dm/wdt.c
+++ b/test/dm/wdt.c
@@ -54,7 +54,7 @@
 	 */
 	struct udevice *wdt, *gpio;
 	const u64 timeout = 42;
-	const int offset = 7;
+	const int offset = 8;
 	int val;
 
 	ut_assertok(uclass_get_device_by_name(UCLASS_WDT,
@@ -115,7 +115,7 @@
 	struct udevice *gpio_wdt, *sandbox_wdt;
 	struct udevice *gpio;
 	const u64 timeout = 42;
-	const int offset = 7;
+	const int offset = 8;
 	uint reset_count;
 	int val;