diff --git a/target/linux/ramips/dts/mt7620a_edimax_ew-747x.dtsi b/target/linux/ramips/dts/mt7620a_edimax_ew-747x.dtsi
index 3b8ba4ec38..1202ac1b69 100644
--- a/target/linux/ramips/dts/mt7620a_edimax_ew-747x.dtsi
+++ b/target/linux/ramips/dts/mt7620a_edimax_ew-747x.dtsi
@@ -122,7 +122,6 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&rgmii1_pins &mdio_pins &phy_reset_pins>;
 
-	mediatek,portmap = "l";
 	mediatek,mdio-mode = <1>;
 
 	phy-reset-gpios = <&gpio1 15 GPIO_ACTIVE_LOW>;
diff --git a/target/linux/ramips/dts/mt7620a_tplink_archer-mr200.dts b/target/linux/ramips/dts/mt7620a_tplink_archer-mr200.dts
index dccced0f18..ea42ef2c54 100644
--- a/target/linux/ramips/dts/mt7620a_tplink_archer-mr200.dts
+++ b/target/linux/ramips/dts/mt7620a_tplink_archer-mr200.dts
@@ -169,9 +169,8 @@
 };
 
 &ethernet {
-		mtd-mac-address = <&rom 0xf100>;
-		mediatek,portmap = "llll";
-	};
+	mtd-mac-address = <&rom 0xf100>;
+};
 
 &ehci {
 	status = "okay";
diff --git a/target/linux/ramips/dts/mt7621_xiaomi_mir3g-v2.dts b/target/linux/ramips/dts/mt7621_xiaomi_mir3g-v2.dts
index ec0ee087e8..6e06ed07e8 100644
--- a/target/linux/ramips/dts/mt7621_xiaomi_mir3g-v2.dts
+++ b/target/linux/ramips/dts/mt7621_xiaomi_mir3g-v2.dts
@@ -134,7 +134,7 @@
 
 &ethernet {
 	mtd-mac-address = <&factory 0xe000>;
-	mediatek,portmap = "lllwl";
+	mediatek,portmap = "llllw";
 };
 
 &state_default {