Hi, Am Mittwoch, 15. November 2023, 22:04:17 CET schrieb shironeko: just if you need to resend, the patch subject could please mention both the gmac and rk3328 :-) > 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"; > }; > hmm, what about the other gmac-interface (gmac2phy). Does the TRM provide depth information for that too? Thanks Heiko