RE: [PATCH v2 2/3] media: dt-bindings: media: renesas,drif: Convert to json-schema

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Hi Geert,

Thank you for your feedback!

> From: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
> Sent: 23 September 2020 11:07
>
> Hi Fabrizio,
>
> On Wed, Sep 16, 2020 at 1:00 PM Fabrizio Castro
> <fabrizio.castro.jz@xxxxxxxxxxx> wrote:
> > Convert the Renesas DRIF bindings to DT schema and update
> > MAINTAINERS accordingly.
> >
> > Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@xxxxxxxxxxx>
> > Reviewed-by: Lad Prabhakar <prabhakar.mahadev-
> lad.rj@xxxxxxxxxxxxxx>
> > Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
>
> Thanks for your patch!
>
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/renesas,drif.yaml
>
> > +properties:
>
> > +  pinctrl-0:
> > +    maxItems: 1
> > +
> > +  pinctrl-names:
> > +    maxItems: 1
> > +    items:
> > +      - const: default
>
> I think these are added automatically by the tooling, so there is no
> need to list them explicitly.
> Or do you need to list them here because of the required logic below?

I have now tried taking pinctrl-0 and pinctrl-names properties out, and things seem to be okay, I'll take them out in v3.

>
> > +required:
> > +  - compatible
> > +  - reg
> > +  - interrupts
> > +  - clocks
> > +  - clock-names
> > +  - resets
> > +  - dmas
> > +  - dma-names
> > +  - renesas,bonding
>
> Missing "power-domains".

I'll add it in v3

>
> > +
> > +if:
> > +  required:
> > +    - renesas,primary-bond
> > +then:
> > +  required:
> > +    - pinctrl-0
> > +    - pinctrl-names
> > +    - port
>
> The last 3 properties must not be present for a secondary interface,
> right?

If you have both channels enabled, then one of the two has to define properties:
* renesas,primary-bond, pinctrl-0, pinctrl-names, and port.

If only one channel is enabled, then the primary bond concept loses its value,
whether renesas,primary-bond is specified or not doesn’t matter anymore, but the
enabled node has to specify the pinctrl related properties and the port.

> To express that, I think you need to add:
>
>     else:
>       properties:
>         - pinctrl-0: false
>         - pinctrl-names: false
>         - port: false

If I went with this, we would not be able to allow those properties to be specified in the
only enabled node for single channels configurations.

Is there a better way to approach this?

I'll wait for this point to get sorted before sending v3 out.

Thanks,
Fab

>
> Gr{oetje,eeting}s,
>
>                         Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-
> m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds


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