19 lines
669 B
Diff
19 lines
669 B
Diff
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Default Programmable Buffer Length in rk3399's gmac is not suitable
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for MTUs higher than 1498. The easiest solution would be to disable
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offloading but it is not ideal as it disables hardware checksumming.
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This patch sets pbl to 0x4 which is good for the most popular MTU
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value of 1500.
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diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
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index 9870df76..25aa0fc2 100644
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--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
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+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
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@@ -292,6 +292,7 @@
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resets = <&cru SRST_A_GMAC>;
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reset-names = "stmmaceth";
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rockchip,grf = <&grf>;
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+ snps,pbl = <0x4>;
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status = "disabled";
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};
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