Re: [PATCH v1 3/3] dt-bindings: net: sun8i-emac: Add AC300 EMAC1 nvmem phy selection

On Mon, May 26, 2025 at 1:36 PM Andrew Lunn [off-list ref] wrote:

quoted

+        phy-mode = "rgmii";

Does the PCB have extra long clock lines?

I'm not sure, it's a copackaged(maybe on-die is the wrong terminology)
PHY I think so I assume the clock lines are internal, in the device specific
dts we set something like this on the emac1 node:
allwinner,rx-delay-ps = <3100>;
allwinner,tx-delay-ps = <700>;

There's some more info here on the AC300:
https://lore.kernel.org/lkml/20200416185758.1388148-1-jernej.skrabec@siol.net/ (local)

https://elixir.bootlin.com/linux/v6.15/source/Documentation/devicetree/bindings/net/ethernet-controller.yaml#L287

        Andrew