linux-kernel - RE: [PATCH] pinctrl: scmi: support i.MX OEM pin configuration type

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Date: Tue, 27 Feb 2024 00:51:56 +0000
From: Peng Fan <peng.fan@....com>
To: Cristian Marussi <cristian.marussi@....com>
CC: "Peng Fan (OSS)" <peng.fan@....nxp.com>, "sudeep.holla@....com"
	<sudeep.holla@....com>, "linus.walleij@...aro.org"
	<linus.walleij@...aro.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "linux-gpio@...r.kernel.org"
	<linux-gpio@...r.kernel.org>, Aisheng Dong <aisheng.dong@....com>, Nitin Garg
	<nitin.garg_3@....com>, Ranjani Vaidyanathan <ranjani.vaidyanathan@....com>,
	Ye Li <ye.li@....com>
Subject: RE: [PATCH] pinctrl: scmi: support i.MX OEM pin configuration type

> Subject: Re: [PATCH] pinctrl: scmi: support i.MX OEM pin configuration type
> 
> On Mon, Feb 26, 2024 at 01:16:51PM +0000, Peng Fan wrote:
> > Hi Linus, Sudeep, Cristian,
> >
> > > Subject: [PATCH] pinctrl: scmi: support i.MX OEM pin configuration
> > > type
> >
> > Sorry to ping early, but this impacts the design and i.MX95 SoC
> > upstream( although I removed pinctrl to let uboot init pinmux as of
> > now), so I would like see whether are you ok with the approach or not.
> > This is the best as of now I could think out to not adding more size
> > to firmware and make the dts format similar as previous i.MX.
> >
> 
> I'll let Linus and Sudeep argument better, but, for my understanding, does
> this solve all the issue with supporting custom iMX DT pinctrl bindings on top
> of the current SCMI pinctrl generic driver without the need of your last 2
> downstream patches, or I am missing somethimg?

No need the last 2 downstream patches, the custom OEM params could
make it work, I just need to convert the imx95-pinfunc.h header file
to new format.

We might be able to only keep imx,pin-conf in future after some firmware
work.
 
Thanks,
Peng.

> 
> Thanks,
> Cristian