diff --git a/arch/arm/boot/dts/stm32mp157a-dk1.dts b/arch/arm/boot/dts/stm32mp157a-dk1.dts
index 969eb013e4bd..f3f0e37aad4d 100644
--- a/arch/arm/boot/dts/stm32mp157a-dk1.dts
+++ b/arch/arm/boot/dts/stm32mp157a-dk1.dts
@@ -62,7 +62,7 @@ &ethernet0 {
 	pinctrl-0 = <&ethernet0_rgmii_pins_a>;
 	pinctrl-1 = <&ethernet0_rgmii_pins_sleep_a>;
 	pinctrl-names = "default", "sleep";
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-id";
 	max-speed = <1000>;
 	phy-handle = <&phy0>;
 
diff --git a/arch/arm/boot/dts/stm32mp157c-ev1.dts b/arch/arm/boot/dts/stm32mp157c-ev1.dts
index 50f326397609..feb8f7727270 100644
--- a/arch/arm/boot/dts/stm32mp157c-ev1.dts
+++ b/arch/arm/boot/dts/stm32mp157c-ev1.dts
@@ -143,7 +143,7 @@ &ethernet0 {
 	pinctrl-0 = <&ethernet0_rgmii_pins_a>;
 	pinctrl-1 = <&ethernet0_rgmii_pins_sleep_a>;
 	pinctrl-names = "default", "sleep";
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-id";
 	max-speed = <1000>;
 	phy-handle = <&phy0>;