linux-kernel - Re: [PATCH] media: dt-bindings: i2c: ovti,ov5640: Drop ref to video-interface-devices.yaml

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Date:   Mon, 19 Sep 2022 10:41:00 +0100
From:   "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Maxime Ripard <maxime@...no.tech>,
        Steve Longerbeam <slongerbeam@...il.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Hans Verkuil <hverkuil@...all.nl>, linux-media@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH] media: dt-bindings: i2c: ovti,ov5640: Drop ref to video-interface-devices.yaml

On Mon, Sep 19, 2022 at 10:37 AM Laurent Pinchart
<laurent.pinchart@...asonboard.com> wrote:
>
> On Mon, Sep 19, 2022 at 10:35:21AM +0100, Lad, Prabhakar wrote:
> > On Mon, Sep 19, 2022 at 9:19 AM Krzysztof Kozlowski wrote:
> > > On 19/09/2022 10:08, Lad, Prabhakar wrote:
> > > > On Sun, Sep 18, 2022 at 12:06 AM Laurent Pinchart wrote:
> > > >> On Fri, Sep 16, 2022 at 02:35:21PM +0100, Prabhakar wrote:
> > > >>> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> > > >>>
> > > >>> video-interface-devices.yaml isn't used so just drop it from the
> > > >>> DT binding doc.
> > > >>>
> > > >>> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> > > >>> ---
> > > >>>  Documentation/devicetree/bindings/media/i2c/ovti,ov5640.yaml | 3 ---
> > > >>>  1 file changed, 3 deletions(-)
> > > >>>
> > > >>> diff --git a/Documentation/devicetree/bindings/media/i2c/ovti,ov5640.yaml b/Documentation/devicetree/bindings/media/i2c/ovti,ov5640.yaml
> > > >>> index 540fd69ac39f..ce99aada75ad 100644
> > > >>> --- a/Documentation/devicetree/bindings/media/i2c/ovti,ov5640.yaml
> > > >>> +++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov5640.yaml
> > > >>> @@ -9,9 +9,6 @@ title: OmniVision OV5640 Image Sensor Device Tree Bindings
> > > >>>  maintainers:
> > > >>>    - Steve Longerbeam <slongerbeam@...il.com>
> > > >>>
> > > >>> -allOf:
> > > >>> -  - $ref: /schemas/media/video-interface-devices.yaml#
> > > >>> -
> > > >>
> > > >> The rotation property listed in this binding uses the definition from
> > > >> video-interface-devices.yaml. I don't think just dropping this is the
> > > >> right solution. Changing additionaProperties to unevaluatedProperties
> > > >> seems a better option.
> > > >
> > > > Agreed, I missed rotation was used from video-interface-devices.yaml.
> > > > Agreed the changing additionaProperties to unevaluatedProperties seems
> > > > a better option.
> > >
> > > The meaning of unevaluatedProperties:false would be here - accept other
> > > properties (not mentioned here explicitly) from referenced schema. If
> > > this is your actual intention for this binding, it makes sense. But if
> > > the intention in this binding was to disallow these other properties,
> > > then it would be wrong to change to unevaluatedProperties.
> > >
> > Thank you for the clarification. The intention is to disallow the property.
>
> Why should they be disallowed ?
>
my bad! "rotation" property is supposed to be allowed so the earlier
comment to change to unevaluatedProperties holds good.

Cheers,
Prabhakar