Without fifo depths attempting to change the MTU will fail. These values are from the RK3328 Technical Reference Manual, briefly tested with Rock64. Signed-off-by: shironeko <shironeko@xxxxxxxxxxxxx> --- arch/arm64/boot/dts/rockchip/rk3328.dtsi | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsi index e729e7a22b23..1573250ac24e 100644 --- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi @@ -916,6 +916,8 @@ gmac2io: ethernet@ff540000 { resets = <&cru SRST_GMAC2IO_A>; reset-names = "stmmaceth"; rockchip,grf = <&grf>; + tx-fifo-depth = <2048>; + rx-fifo-depth = <4096>; snps,txpbl = <0x4>; status = "disabled"; }; -- 2.42.1