diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
index e02eb72..470edde 100644
--- a/arch/arm/boot/dts/sun7i-a20.dtsi
+++ b/arch/arm/boot/dts/sun7i-a20.dtsi
@@ -1385,6 +1385,7 @@
 			clock-names = "stmmaceth", "allwinner_gmac_tx";
 			snps,pbl = <2>;
 			snps,fixed-burst;
+			tx-fifo-depth = <16384>;
 			snps,force_sf_dma_mode;
 			status = "disabled";
 			#address-cells = <1>;