linux-kernel - RE: [PATCH 1/2] dt-bindings: arm: fsl: Update i.MX95 compatible

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Message-ID:
 <PAXPR04MB845922D5BCAA88C26C0149B488102@PAXPR04MB8459.eurprd04.prod.outlook.com>
Date: Mon, 6 Jan 2025 02:51:11 +0000
From: Peng Fan <peng.fan@....com>
To: Krzysztof Kozlowski <krzk@...nel.org>, "Peng Fan (OSS)"
	<peng.fan@....nxp.com>, Rob Herring <robh@...nel.org>, Krzysztof Kozlowski
	<krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Shawn Guo
	<shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, Pengutronix
 Kernel Team <kernel@...gutronix.de>, Fabio Estevam <festevam@...il.com>
CC: "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"imx@...ts.linux.dev" <imx@...ts.linux.dev>,
	"linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>
Subject: RE: [PATCH 1/2] dt-bindings: arm: fsl: Update i.MX95 compatible

> Subject: Re: [PATCH 1/2] dt-bindings: arm: fsl: Update i.MX95
> compatible
> 
> On 04/01/2025 13:13, Peng Fan (OSS) wrote:
> > From: Peng Fan <peng.fan@....com>
> >
> > i.MX95 features a System Controller and SCMI Spec 3.2 compatible
> > firmware System Manager(SM) runs on the controller.
> > Add "fsl,imx-sm" compatible string as fallback for "fsl,imx95" to
> > indicate it is compatible with i.MX System Manager.
> 
> I see little value in generic compatible like that. All these are
> aarch64 so why not adding that compatible?
> 
> How this generic compatible would be used?
> 
> And by what exactly?

There will be more i.MX9 chips with System Manager. I would
not expand the list here each time to support a new SoC.

https://elixir.bootlin.com/linux/v6.13-rc3/source/drivers/pinctrl/pinctrl-scmi.c#L508
https://elixir.bootlin.com/linux/v6.13-rc3/source/drivers/pinctrl/freescale/pinctrl-imx-scmi.c#L290

> 
> All this must be explained in the commit msg.

If upper is ok, I will include in V2.

Thanks,
Peng.

> 
> Best regards,
> Krzysztof