linux-kernel - Re: [RFC v2 5/5] dt-bindings: gpio: Add bindings for pinctrl based generic gpio driver

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Date:   Thu, 12 Oct 2023 10:15:01 +0900
From:   AKASHI Takahiro <takahiro.akashi@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     sudeep.holla@....com, cristian.marussi@....com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        linus.walleij@...aro.org, Oleksii_Moisieiev@...m.com,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org
Subject: Re: [RFC v2 5/5] dt-bindings: gpio: Add bindings for pinctrl based
 generic gpio driver

On Thu, Oct 05, 2023 at 09:48:09PM +0200, Krzysztof Kozlowski wrote:
> On 05/10/2023 04:58, AKASHI Takahiro wrote:
> > A dt binding for pin controller based generic gpio driver is defined in
> > this commit. One usable device is Arm's SCMI.
> > 
> > Signed-off-by: AKASHI Takahiro <takahiro.akashi@...aro.org>
> 
> > +
> > +required:
> > +  - compatible
> > +  - gpio-controller
> > +  - "#gpio-cells"
> > +  - gpio-ranges
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    gpio0: gpio@0 {
> 
> No reg, so no unit address.

My intention was to allow for multiple nodes (instances) of
pinctrl based gpio devices. But I don't care the naming.

> Drop also unused label.

Okay, I already dropped an example consumer device and have no need
for the label any longer.

-Takahiro Akashi

> 
> > +        compatible = "pin-control-gpio";
> > +        gpio-controller;
> 
> Best regards,
> Krzysztof
>