[PATCH v4 2/7] dt-bindings: net: amlogic,meson-dwmac: add amlogic,t7-dwmac

Andrew Lunn andrew at lunn.ch
Sun Nov 1 17:11:11 PST 2026


> +        # The PHY adds the 2ns RGMII delays, see ethernet-controller.yaml.
> +        # The RX delay line of this glue is fine tuning in 200ps steps,
> +        # added on top of what phy-mode describes. The TX side has no fine
> +        # tuning: its only step is a quarter of the clock period, the full
> +        # 2ns at 1Gbit/s, so the TX property is not accepted.
> +        tx-internal-delay-ps: false
> +
> +        rx-internal-delay-ps:
> +          enum: [200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800, 2000,
> +                 2200, 2400, 2600, 2800, 3000]

This is good, thanks.

> +
> +        amlogic,tx-delay-ns: false
> +        amlogic,rx-delay-ns: false

Maybe add a comment that these are deprecated in new SoCs favour of
the standard {rx|tx}-internal-delay-ps properties.

    Andrew




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