diff --git a/arch/arm/dts/imx8mp-dhcom-som.dtsi b/arch/arm/dts/imx8mp-dhcom-som.dtsi
index 0f13ee36277..304c94557ed 100644
--- a/arch/arm/dts/imx8mp-dhcom-som.dtsi
+++ b/arch/arm/dts/imx8mp-dhcom-som.dtsi
@@ -94,14 +94,14 @@
 		#size-cells = <0>;
 
 		/* Up to one of these two PHYs may be populated. */
-		ethphy0f: ethernet-phy@1 { /* SMSC LAN8740Ai */
+		ethphy0f: ethernet-phy@0 { /* SMSC LAN8740Ai */
 			compatible = "ethernet-phy-id0007.c110",
 				     "ethernet-phy-ieee802.3-c22";
 			interrupt-parent = <&gpio3>;
 			interrupts = <19 IRQ_TYPE_LEVEL_LOW>;
 			pinctrl-0 = <&pinctrl_ethphy0>;
 			pinctrl-names = "default";
-			reg = <1>;
+			reg = <0>;
 			reset-assert-us = <1000>;
 			reset-deassert-us = <1000>;
 			reset-gpios = <&gpio3 20 GPIO_ACTIVE_LOW>;