Re: [PATCH v6 5/6] dt-bindings: mfd: Add Delta TN48M CPLD drivers bindings

From: Andrew Lunn
Date: Mon Oct 18 2021 - 21:40:59 EST


> The SFP driver requires GPIO-s, it only knows how to use GPIO-s, and
> its a generic driver,
> it covers any device that has an SFP port that is implemented per spec.
> So, I cannot just extend it to suit my devices needs and I don't see
> how can I extend it in
> a generic manner so that it controls the pins directly via a regmap
> for example, especially since
> each switch has a different number of SFP ports and thus pins and a
> different register layout.
>
> I have added Andrew Lunn as he is one of the maintainers of PHYLIB
> under which the SFP driver
> is, he may have some input on how to proceed with this.
>
> I honestly think that we have some kind of misunderstanding here and
> look forward to resolving it.

Hi Robert

Can you describe your hardware and regmap in a bit more detail. What
do these registers look like? How do they map to the SFP cage pins?

Andrew