diff --git a/arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dts b/arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dts
index 0e5d329..b2154d5 100644
--- a/arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dts
+++ b/arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dts
@@ -35,6 +35,7 @@
 &ethphy0f { /* SMSC LAN8740Ai */
 	pinctrl-0 = <&pinctrl_ethphy0 &pinctrl_ioexp>;
 	reset-gpios = <&gpio3 20 GPIO_ACTIVE_LOW>;
+	reg = <0>;
 };
 
 &ethphy0g { /* Micrel KSZ9131RNXI */
@@ -42,6 +43,10 @@
 	reset-gpios = <&gpio3 20 GPIO_ACTIVE_LOW>;
 };
 
+&ethphy1f { /* SMSC LAN8740Ai */
+	reg = <1>;
+};
+
 &i2c3 {
 	adc@48 {
 		compatible = "ti,tla2024";