Re: [PATCH v5 5/6] media: dt-bindings: mt9p031: Convert bindings to yaml

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On Wed, Jul 14, 2021 at 4:01 AM Stefan Riedmüller
<S.Riedmueller@xxxxxxxxx> wrote:
>
> Hi Rob,
>
> On Tue, 2021-07-13 at 20:19 -0600, Rob Herring wrote:
> > On Mon, Jul 12, 2021 at 10:55:34AM +0200, Stefan Riedmueller wrote:
> > > Convert mt9p031 sensor bindings to yaml schema. Also update the
> > > MAINTAINERS entry.
> > >
> > > Although input-clock-frequency and pixel-clock-frequency have not been
> > > definded as endpoint propierties in the textual bindings, the sensor
> > > does parse them from the endpoint. Thus move these properties to the
> > > endpoint in the new yaml bindings.
> > >
> > > Signed-off-by: Stefan Riedmueller <s.riedmueller@xxxxxxxxx>
> > > ---
> > >  .../bindings/media/i2c/aptina,mt9p031.yaml    | 75 +++++++++++++++++++
> > >  .../devicetree/bindings/media/i2c/mt9p031.txt | 40 ----------
> > >  MAINTAINERS                                   |  1 +
> > >  3 files changed, 76 insertions(+), 40 deletions(-)
> > >  create mode 100644
> > > Documentation/devicetree/bindings/media/i2c/aptina,mt9p031.yaml
> > >  delete mode 100644
> > > Documentation/devicetree/bindings/media/i2c/mt9p031.txt
> > >
> > > diff --git
> > > a/Documentation/devicetree/bindings/media/i2c/aptina,mt9p031.yaml
> > > b/Documentation/devicetree/bindings/media/i2c/aptina,mt9p031.yaml
> > > new file mode 100644
> > > index 000000000000..ad9a2db73d86
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/media/i2c/aptina,mt9p031.yaml
> > > @@ -0,0 +1,75 @@
> > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > > +%YAML 1.2
> > > +---
> > > +$id: http://devicetree.org/schemas/media/i2c/aptina,mt9p031.yaml#
> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > +
> > > +title: Aptina 1/2.5-Inch 5Mp CMOS Digital Image Sensor
> > > +
> > > +maintainers:
> > > +  - Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> > > +
> > > +description: |
> > > +  The Aptina MT9P031 is a 1/2.5-inch CMOS active pixel digital image
> > > sensor
> > > +  with an active array size of 2592H x 1944V. It is programmable through
> > > a
> > > +  simple two-wire serial interface.
> > > +
> > > +properties:
> > > +  compatible:
> > > +    enum:
> > > +      - aptina,mt9p031
> > > +      - aptina,mt9p031m
> > > +
> > > +  reg:
> > > +    description: I2C device address
> > > +    maxItems: 1
> > > +
> > > +  reset-gpios:
> > > +    maxItems: 1
> > > +    description: Chip reset GPIO
> > > +
> > > +  port:
> > > +    $ref: /schemas/graph.yaml#/$defs/port-base
> > > +    additionalProperties: false
> > > +
> > > +    properties:
> > > +      endpoint:
> > > +        $ref: /schemas/media/video-interfaces.yaml#
> >
> > Doesn't look like you use any properties from video-interfaces.yaml. You
> > should just reference graph.yaml#/$defs/endpoint-base instead.
>
> Thanks for your comment. It made me realize, that I have something wrong. The
> driver does use properties from the video interface as it parses the bus
> configuration from the endpoint. But I thought these properties were
> implicitly used by referencing the video-interfaces schema. Now I assume that
> I have to mention them here explicitly. Correct?

Yes, because presumably you only support some subset of possible values.

Rob




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