diff --git a/arch/arm64/boot/dts/rockchip/px30-evb-ddr3-v10.dts b/arch/arm64/boot/dts/rockchip/px30-evb-ddr3-v10.dts
index 50f2abaf32c9..16c93271a681 100644
--- a/arch/arm64/boot/dts/rockchip/px30-evb-ddr3-v10.dts
+++ b/arch/arm64/boot/dts/rockchip/px30-evb-ddr3-v10.dts
@@ -295,7 +295,9 @@
 
 &gmac {
 	phy-supply = <&vcc_phy>;
-	clock_in_out = "output";
+	assigned-clocks = <&cru SCLK_GMAC>;
+	assigned-clock-parents = <&gmac_clkin>;
+	clock_in_out = "input";
 	snps,reset-gpio = <&gpio2 13 GPIO_ACTIVE_LOW>;
 	snps,reset-active-low;
 	snps,reset-delays-us = <0 50000 50000>;
diff --git a/arch/arm64/boot/dts/rockchip/px30-evb-ddr4-v10.dts b/arch/arm64/boot/dts/rockchip/px30-evb-ddr4-v10.dts
index 4a074618a113..117da295f0fb 100644
--- a/arch/arm64/boot/dts/rockchip/px30-evb-ddr4-v10.dts
+++ b/arch/arm64/boot/dts/rockchip/px30-evb-ddr4-v10.dts
@@ -295,7 +295,9 @@
 
 &gmac {
 	phy-supply = <&vcc_phy>;
-	clock_in_out = "output";
+	assigned-clocks = <&cru SCLK_GMAC>;
+	assigned-clock-parents = <&gmac_clkin>;
+	clock_in_out = "input";
 	snps,reset-gpio = <&gpio2 13 GPIO_ACTIVE_LOW>;
 	snps,reset-active-low;
 	snps,reset-delays-us = <0 50000 50000>;