diff --git a/target/linux/ramips/dts/mt7621.dtsi b/target/linux/ramips/dts/mt7621.dtsi
index 18a56cfc7d..baa0e7b455 100644
--- a/target/linux/ramips/dts/mt7621.dtsi
+++ b/target/linux/ramips/dts/mt7621.dtsi
@@ -472,6 +472,9 @@
 
 		mediatek,ethsys = <&ethsys>;
 
+		pinctrl-names = "default";
+		pinctrl-0 = <&rgmii1_pins &mdio_pins>;
+
 		gmac0: mac@0 {
 			compatible = "mediatek,eth-mac";
 			reg = <0>;