linux-kernel - Re: [PATCH 03/23] dt-bindings: gpio: nomadik: add mobileye,eyeq5-gpio compatible

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Date: Thu, 15 Feb 2024 10:52:44 +0100
From: Théo Lebrun <theo.lebrun@...tlin.com>
To: "Krzysztof Kozlowski" <krzysztof.kozlowski@...aro.org>, "Linus Walleij"
 <linus.walleij@...aro.org>, "Bartosz Golaszewski" <brgl@...ev.pl>, "Rob
 Herring" <robh+dt@...nel.org>, "Krzysztof Kozlowski"
 <krzysztof.kozlowski+dt@...aro.org>, "Conor Dooley" <conor+dt@...nel.org>,
 "Philipp Zabel" <p.zabel@...gutronix.de>, "Thomas Bogendoerfer"
 <tsbogend@...ha.franken.de>
Cc: <linux-gpio@...r.kernel.org>, <devicetree@...r.kernel.org>,
 <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
 <linux-mips@...r.kernel.org>, "Gregory CLEMENT"
 <gregory.clement@...tlin.com>, "Vladimir Kondratiev"
 <vladimir.kondratiev@...ileye.com>, "Thomas Petazzoni"
 <thomas.petazzoni@...tlin.com>, "Tawfik Bayouk"
 <tawfik.bayouk@...ileye.com>
Subject: Re: [PATCH 03/23] dt-bindings: gpio: nomadik: add
 mobileye,eyeq5-gpio compatible

Hello,

On Thu Feb 15, 2024 at 10:13 AM CET, Krzysztof Kozlowski wrote:
> On 14/02/2024 17:23, Théo Lebrun wrote:
> > This GPIO controller is used on the Mobileye EyeQ5 SoC. Add its
> > compatible to the dt-bindings. One difference is that the block as
> > integrated on EyeQ5 does not support sleep-mode.
> > 
> > Signed-off-by: Théo Lebrun <theo.lebrun@...tlin.com>
> > ---
> >  .../devicetree/bindings/gpio/st,nomadik-gpio.yaml        | 16 +++++++++++++++-
> >  1 file changed, 15 insertions(+), 1 deletion(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/gpio/st,nomadik-gpio.yaml b/Documentation/devicetree/bindings/gpio/st,nomadik-gpio.yaml
> > index bbd23daed229..e44cf292bc6d 100644
> > --- a/Documentation/devicetree/bindings/gpio/st,nomadik-gpio.yaml
> > +++ b/Documentation/devicetree/bindings/gpio/st,nomadik-gpio.yaml
> > @@ -19,7 +19,9 @@ properties:
> >      pattern: "^gpio@[0-9a-f]+$"
> >  
> >    compatible:
> > -    const: st,nomadik-gpio
> > +    enum:
> > +      - st,nomadik-gpio
> > +      - mobileye,eyeq5-gpio
> >  
> >    reg:
> >      maxItems: 1
> > @@ -65,6 +67,18 @@ required:
> >  
> >  unevaluatedProperties: false
> >  
> > +allOf:
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            const: st,nomadik-gpio
> > +    then:
> > +      properties:
> > +        st,supports-sleepmode:
> > +          description: Whether the controller can sleep or not.
> > +          $ref: /schemas/types.yaml#/definitions/flag
>
> You already have such property, so you are defining it second time. You
> want instead if: for eyeq5-gpio making it:
> then:
>   properties:
>     st,supports-sleepmode: false

Good catch. I hesitated between declaring the property inside an
if-statement or disabling it inside an if-statement as you show here. I
ended-up mixing those two approaches.

Wil pick the if-eyeq5-then-disable-prop solution.

Thanks for the review Krzysztof!

--
Théo Lebrun, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com