[PATCH 2/2] arm64: allwinner: a64: add device tree for SOPINE on Pine64 Clusterboard
Andrew Lunn
andrew at lunn.ch
Sun Nov 20 15:42:14 PST 2022
> +&emac {
> + allwinner,tx-delay-ps = <500>;
> +};
Is this direct MAC to MAC without a PHY in the middle? And RGMII?
500ps seems odd. It is normally 1000ps. And you need to specify a
delay for both Rx and Tx. I could understand
&emac {
allwinner,tx-delay-ps = <500>;
allwinner,rx-delay-ps = <500>;
};
then each end adds 1/2 the delay on both Rx and Tx.
Andrew
More information about the linux-arm-kernel
mailing list