diff --git a/arch/arm/dts/uniphier-pxs2.dtsi b/arch/arm/dts/uniphier-pxs2.dtsi
index 9760f79..5cef163 100644
--- a/arch/arm/dts/uniphier-pxs2.dtsi
+++ b/arch/arm/dts/uniphier-pxs2.dtsi
@@ -549,6 +549,7 @@
 			resets = <&sys_rst 6>;
 			phy-mode = "rgmii";
 			local-mac-address = [00 00 00 00 00 00];
+			socionext,syscon-phy-mode = <&soc_glue 0>;
 
 			mdio: mdio {
 				#address-cells = <1>;