diff --git a/arch/arm64/boot/dts/socionext/uniphier-pxs3-ref.dts b/arch/arm64/boot/dts/socionext/uniphier-pxs3-ref.dts
index c933fcc79225..3c7108729827 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";
 };
 
+&serial2 {
+	status = "okay";
+};
+
+&serial3 {
+	status = "okay";
+};
+
 &gpio {
 	xirq4 {
 		gpio-hog;