diff --git a/arch/arm64/boot/dts/rockchip/rk3588-nvr-demo.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-nvr-demo.dtsi
index 82283df2d729..dabf34a67e3f 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-nvr-demo.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588-nvr-demo.dtsi
@@ -186,7 +186,7 @@
 		     &gmac0_rgmii_clk
 		     &gmac0_rgmii_bus>;
 
-	tx_delay = <0x5c>;
+	tx_delay = <0x44>;
 	/* rx_delay = <0x4f>; */
 
 	phy-handle = <&rgmii_phy0>;
@@ -210,7 +210,7 @@
 		     &gmac1_rgmii_clk
 		     &gmac1_rgmii_bus>;
 
-	tx_delay = <0x5c>;
+	tx_delay = <0x42>;
 	/* rx_delay = <0x4f>; */
 
 	phy-handle = <&rgmii_phy1>;