Messages in this thread | | | Date | Fri, 3 Nov 2023 13:35:46 +0100 | From | Andrew Lunn <> | Subject | Re: [PATCH v2 2/2] arm64: dts: freescale: Add SKOV IMX8MP CPU revB board |
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> + port@2 { > + reg = <2>; > + label = "cpu"; > + ethernet = <&eqos>; > + /* 2ns rgmii-rxid is implemented on PCB. > + * Switch should add only rgmii-txid. > + */
Its unusual to actually see that. Its even more unusual its only one clock line. Can you actually see it on the PCB?
> + phy-mode = "rgmii-txid"; > + tx-internal-delay-ps = <2000>;
Is this actually needed? rgmii-txid should add 2ns delay. Since this apparently works, i'm assuming setting tx-internal-delay-ps to 2ns does nothing, otherwise you would have a 4ns delay.
Andrew
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