Re: [PATCH v6 2/3] net: ethtool: add KSZ87xx low-loss cable PHY tunables

[Marek Vasut]

On 5/20/26 10:48 AM, Fidelio Lawson wrote:
> Introduce vendor-specific PHY tunable identifiers to control the
> KSZ87xx low-loss cable erratum handling through the ethtool PHY
> tunable interface.
>
> The following tunables are added:
>
> - a boolean "short-cable" tunable, applying a documented and
>    conservative preset intended for short or low-loss Ethernet cables;
>
> - an integer LPF bandwidth tunable, allowing advanced adjustment of the
>    receiver low-pass filter bandwidth;
>
> - an integer DSP EQ initial value tunable, allowing advanced tuning of
>    the PHY equalizer initialization.
>
> The actual behavior is implemented by the corresponding PHY and switch
> drivers.
>
> Signed-off-by: Fidelio Lawson <fidelio.lawson@xxxxxxxxxx>
Reviewed-by: Marek Vasut <marex@xxxxxxxxxxxx>