RE: [PATCH v5 0/3] pinctrl: scmi: support i.MX95 OEM extensions

[Peng Fan <peng.fan@xxxxxxx>]

Hi Sudeep,

> Subject: Re: [PATCH v5 0/3] pinctrl: scmi: support i.MX95 OEM extensions
> 
> On Wed, May 08, 2024 at 11:32:01AM +0800, Peng Fan (OSS) wrote:
> > ARM SCMI v3.2 Table 24 Pin Configuration Type and Enumerations:
> > '192 -255 OEM specific units'.
> >
> > i.MX95 System Manager FW supports SCMI PINCTRL protocol, but it has
> > zero functions, groups. So pinctrl-scmi.c could not be reused for i.MX95.
> > Because nxp,pin-func, nxp,pin-conf properties are rejected by dt
> > maintainers, so use generic property 'pinmux' which requires a new
> > driver pinctrl-imx-scmi.c
> >
> 
> Not a review in particular, but if we decide to merge this deviation, it must be
> under the condition that it can be deleted anytime in the future if this
> becomes annoyance(like other vendors using this as a way to deviate from
> the specification). If we can't agree with that, then we better not merge this
> at all.

It is ok for me. I agree.
But actually this driver still follows Spec by using OEM extensions.

If in future, the spec adds something saying pinmux bit field, and pinctrl-scmi.c
supports it, we could drop the imx driver.

Thanks,
Peng.

> 
> --
> Regards,
> Sudeep