diff --git a/arch/arm64/boot/dts/rockchip/rk3566-evb3-ddr3-v10.dtsi b/arch/arm64/boot/dts/rockchip/rk3566-evb3-ddr3-v10.dtsi
index cbb83b5754e9..e71f3acd7637 100644
--- a/arch/arm64/boot/dts/rockchip/rk3566-evb3-ddr3-v10.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3566-evb3-ddr3-v10.dtsi
@@ -93,7 +93,7 @@
 		     &gmac1m0_rgmii_clk_level2
 		     &gmac1m0_rgmii_bus_level3>;
 
-	tx_delay = <0x59>;
+	tx_delay = <0x41>;
 	rx_delay = <0x2e>;
 
 	phy-handle = <&rgmii_phy1>;
diff --git a/arch/arm64/boot/dts/rockchip/rk3566-evb5-lp4x-v10.dtsi b/arch/arm64/boot/dts/rockchip/rk3566-evb5-lp4x-v10.dtsi
index f2a67c92ca52..590990c4c5e1 100644
--- a/arch/arm64/boot/dts/rockchip/rk3566-evb5-lp4x-v10.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3566-evb5-lp4x-v10.dtsi
@@ -149,7 +149,7 @@
 		     &gmac1m0_rgmii_clk_level2
 		     &gmac1m0_rgmii_bus_level3>;
 
-	tx_delay = <0x59>;
+	tx_delay = <0x41>;
 	rx_delay = <0x2e>;
 
 	phy-handle = <&rgmii_phy1>;