Without fifo depths attempting to change the MTU will fail. These values
are from the RK3328 Technical Reference Manual, gmac2io interface tested
with Rock64.
Signed-off-by: shironeko <shironeko@xxxxxxxxxxxxx>
---
v2: added depths for gmac2phy as well
arch/arm64/boot/dts/rockchip/rk3328.dtsi | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
index e729e7a22b23..06af280083ae 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";
};
@@ -938,6 +940,8 @@ gmac2phy: ethernet@ff550000 {
reset-names = "stmmaceth";
phy-mode = "rmii";
phy-handle = <&phy>;
+ tx-fifo-depth = <2048>;
+ rx-fifo-depth = <4096>;
snps,txpbl = <0x4>;
clock_in_out = "output";
status = "disabled";
--
2.42.1
