Messages in this thread |  | | Date | Mon, 21 Nov 2022 00:42:14 +0100 | From | Andrew Lunn <> | Subject | Re: [PATCH 2/2] arm64: allwinner: a64: add device tree for SOPINE on Pine64 Clusterboard |
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> +&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
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