linux-kernel - Re: [PATCH v3 2/4] dt-bindings: gpio: add support for NXP S32G2/S32G3 SoCs

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Message-ID: <20240923-rentable-okay-922af44b66c8@spud>
Date: Mon, 23 Sep 2024 22:34:05 +0100
From: Conor Dooley <conor@...nel.org>
To: Andrei Stefanescu <andrei.stefanescu@....nxp.com>
Cc: Krzysztof Kozlowski <krzk@...nel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chester Lin <chester62515@...il.com>,
	Matthias Brugger <mbrugger@...e.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>, linux-gpio@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	NXP S32 Linux Team <s32@....com>
Subject: Re: [PATCH v3 2/4] dt-bindings: gpio: add support for NXP
 S32G2/S32G3 SoCs

On Mon, Sep 23, 2024 at 01:47:25PM +0300, Andrei Stefanescu wrote:
> Hi,
> 
> On 23/09/2024 00:07, Conor Dooley wrote:
> > On Sun, Sep 22, 2024 at 11:04:22PM +0200, Krzysztof Kozlowski wrote:
> >> On Sat, Sep 21, 2024 at 10:58:46PM +0100, Conor Dooley wrote:
> >>> On Fri, Sep 20, 2024 at 03:40:31PM +0200, Krzysztof Kozlowski wrote:
> >>>> On 20/09/2024 15:33, Andrei Stefanescu wrote:
> > 
> >>>>>>> +properties:
> >>>>>>> +  compatible:
> >>>>>>> +    items:
> >>>>>>> +      - const: nxp,s32g2-siul2-gpio
> >>>>>>
> >>>>>> Commit message and binding description say s32g2 and s32g3, but there's
> >>>>>> only a compatible here for g2.
> >>>>>
> >>>>> Yes, the SIUL2 GPIO hardware is the same for both S32G2 and S32G3 SoCs. I plan
> >>>>> to reuse the same compatible when I add the SIUL2 GPIO device tree node for
> >>>>> the S32G3 boards. Would that be ok?
> >>>>
> >>>> There are only few exceptions where re-using compatible is allowed. Was
> >>>> S32G on them? Please consult existing practice/maintainers and past reviews.
> 
> I will add another compatible: "nxp,s32g3-siul2-gpio" for the S32G3 SoC. We currently
> also have the SIUL2 pinctrl driver in upstream with only one compatible:
> "nxp,s32g2-siul2-pinctrl". Should I also send a separate patch to add an S32G3 compatible
> to it?
> 

That would be great, thanks.

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