diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
index bad41bc6f2d5..2aefb38f7368 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
@@ -906,6 +906,7 @@ gmac2io: ethernet@ff540000 {
 		resets = <&cru SRST_GMAC2IO_A>;
 		reset-names = "stmmaceth";
 		rockchip,grf = <&grf>;
+		snps,txpbl = <0x4>;
 		status = "disabled";
 	};
 
@@ -927,6 +928,7 @@ gmac2phy: ethernet@ff550000 {
 		reset-names = "stmmaceth", "mac-phy";
 		phy-mode = "rmii";
 		phy-handle = <&phy>;
+		snps,txpbl = <0x4>;
 		status = "disabled";
 
 		mdio {
diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index 33cc21fcf4c1..cd5415d7e559 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -288,6 +288,7 @@ gmac: ethernet@fe300000 {
 		resets = <&cru SRST_A_GMAC>;
 		reset-names = "stmmaceth";
 		rockchip,grf = <&grf>;
+		snps,txpbl = <0x4>;
 		status = "disabled";
 	};