diff --git a/arch/arm64/boot/dts/socionext/uniphier-pxs3-ref.dts b/arch/arm64/boot/dts/socionext/uniphier-pxs3-ref.dts
index f9f06fcfb94a..c933fcc79225 100644
--- a/arch/arm64/boot/dts/socionext/uniphier-pxs3-ref.dts
+++ b/arch/arm64/boot/dts/socionext/uniphier-pxs3-ref.dts
@@ -45,6 +45,14 @@
 	status = "okay";
 };
 
+&gpio {
+	xirq4 {
+		gpio-hog;
+		gpios = <UNIPHIER_GPIO_IRQ(4) 0>;
+		input;
+	};
+};
+
 &i2c0 {
 	status = "okay";
 };