diff --git a/dts/Bindings/net/marvell-armada-370-neta.txt b/dts/Bindings/net/marvell-armada-370-neta.txt
index f5a8ca2..aeea50c 100644
--- a/dts/Bindings/net/marvell-armada-370-neta.txt
+++ b/dts/Bindings/net/marvell-armada-370-neta.txt
@@ -8,6 +8,11 @@
 - phy-mode: See ethernet.txt file in the same directory
 - clocks: a pointer to the reference clock for this device.
 
+Optional properties:
+- tx-csum-limit: maximum mtu supported by port that allow TX checksum.
+  Value is presented in bytes. If not used, by default 1600B is set for
+  "marvell,armada-370-neta" and 9800B for others.
+
 Example:
 
 ethernet@d0070000 {
@@ -15,6 +20,7 @@
 	reg = <0xd0070000 0x2500>;
 	interrupts = <8>;
 	clocks = <&gate_clk 4>;
+	tx-csum-limit = <9800>
 	status = "okay";
 	phy = <&phy0>;
 	phy-mode = "rgmii-id";
diff --git a/dts/src/arm/armada-38x.dtsi b/dts/src/arm/armada-38x.dtsi
index c6a0e9d..e8b7f67 100644
--- a/dts/src/arm/armada-38x.dtsi
+++ b/dts/src/arm/armada-38x.dtsi
@@ -498,6 +498,7 @@
 				reg = <0x70000 0x4000>;
 				interrupts-extended = <&mpic 8>;
 				clocks = <&gateclk 4>;
+				tx-csum-limit = <9800>;
 				status = "disabled";
 			};