[PATCH RFC v2 1/5] dt-bindings: net: dwmac-meson: use picoseconds for the RGMII RX delay

Florian Fainelli f.fainelli at gmail.com
Tue Nov 17 13:32:21 EST 2020

On 11/15/20 10:52 AM, Martin Blumenstingl wrote:
> Amlogic Meson G12A, G12B and SM1 SoCs have a more advanced RGMII RX
> delay register which allows picoseconds precision. Deprecate the old
> "amlogic,rx-delay-ns" in favour of a new "amlogic,rgmii-rx-delay-ps"
> property.
> For older SoCs the only known supported values were 0ns and 2ns. The new
> SoCs have 200ps precision and support RGMII RX delays between 0ps and
> 3000ps.
> While here, also update the description of the RX delay to indicate
> that:
> - with "rgmii" or "rgmii-id" the RX delay should be specified
> - with "rgmii-id" or "rgmii-rxid" the RX delay is added by the PHY so
>   any configuration on the MAC side is ignored
> - with "rmii" the RX delay is not applicable and any configuration is
>   ignored
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl at googlemail.com>

Reviewed-by: Florian Fainelli <f.fainelli at gmail.com>

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