Re: [PATCH 02/22] dt-bindings: gpio: fsl-imx-gpio: Add gpio-ranges property

[Krzysztof Kozlowski]

On Mon, Aug 24, 2020 at 07:24:46AM +0200, Sascha Hauer wrote:
> On Sun, Aug 23, 2020 at 06:15:30PM +0200, Krzysztof Kozlowski wrote:
> > The GPIO controller node can have gpio-ranges property.  This fixes
> > dtbs_check warnings like:
> > 
> >   arch/arm64/boot/dts/freescale/imx8mm-evk.dt.yaml: gpio@30200000: 'gpio-ranges' does not match any of the regexes: 'pinctrl-[0-9]+'
> >     From schema: Documentation/devicetree/bindings/gpio/fsl-imx-gpio.yaml
> > 
> > Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
> > ---
> >  .../devicetree/bindings/gpio/fsl-imx-gpio.yaml    | 15 +++++++++++++++
> >  1 file changed, 15 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.yaml b/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.yaml
> > index 454db20c2d1a..1fac69573bb9 100644
> > --- a/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.yaml
> > +++ b/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.yaml
> > @@ -51,6 +51,9 @@ properties:
> >  
> >    gpio-controller: true
> >  
> > +  gpio-ranges:
> > +    maxItems: 1
> > +
> >  required:
> >    - compatible
> >    - reg
> > @@ -62,6 +65,18 @@ required:
> >  
> >  additionalProperties: false
> >  
> > +allOf:
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            const: fsl,imx8mp-gpio
> > +    then:
> > +      properties:
> > +        gpio-ranges:
> > +          minItems: 1
> > +          maxItems: 2
> 
> Why do you limit this to fsl,imx8mp-gpio? The i.MX5,6,7 dtsi files use
> gpio-ranges as well and other i.MX dtsi files could also use it.

All other cases use maximum one element in gpio-ranges, so they are
covered so I assumed they are continuous. But if it not the case, I can
make all them maximum 2.

Best regards,
Krzysztof