diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts
index c033ae45fe42..57d81c6aa379 100644
--- a/arch/arc/boot/dts/hsdk.dts
+++ b/arch/arc/boot/dts/hsdk.dts
@@ -170,6 +170,9 @@
 			resets = <&cgu_rst HSDK_ETH_RESET>;
 			reset-names = "stmmaceth";
 
+			tx-fifo-depth = <4096>;
+			rx-fifo-depth = <4096>;
+
 			mdio {
 				#address-cells = <1>;
 				#size-cells = <0>;