Re: [PATCH v4 5/6] media: dt-bindings: mt9p031: Convert bindings to yaml

[Stefan Riedmüller]

Hi Sakari,

On Thu, 2021-07-08 at 14:23 +0300, Sakari Ailus wrote:
> Hi Stefan,
> 
> Thanks for the patch.

Thanks for your feedback!

> 
> On Thu, Jul 08, 2021 at 11:19:21AM +0200, Stefan Riedmueller wrote:
> > Convert mt9p031 sensor bindings to yaml schema. Also update the
> > MAINTAINERS entry.
> > 
> > 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..7de62e339895
> > --- /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
> > +---
> > +$id: http://devicetree.org/schemas/media/i2c/mt9p031.yaml#
> > +$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#/properties/port
> 
> This should probably be:
> 
> 	$ref: /schemas/graph.yaml#/$defs/port-base

I actually was not sure which one of these to use because I found both in
existing bindings. Also /schemas/graph.yaml#/properties/port has a reference
to $defs/port-base. It would be nice if you or someone else could give me a
hint why /schemas/graph.yaml#/$defs/port-base would be the correct one here.

> 
> > +    addittionalProeprties: false
> 
> Could you run
> 
> 	make dt_binding_check
> DT_SCHEMA_FILES=Documentation/devicetree/bindings/media/i2c/aptina,mt9p031.y
> aml
> 
> please?

Sorry, I totally forgot about this. I'll do so before sending the next
version.

> 
> > +
> > +    properties:
> > +      endpoint:
> > +        $ref: /schemas/media/video-interfaces.yaml#
> > +        unevaluatedProperties: false
> > +
> > +        properties:
> > +          input-clock-frequency: true
> > +          pixel-clock-frequency: true
> 
> These two legacy properties were not in the endpoint previously.

That's right, but they are being parsed from the endpoint so I figured they
belong here. Should I mention this in the commit message?

Thanks,
Stefan

> 
> > +
> > +        required:
> > +          - input-clock-frequency
> > +          - pixel-clock-frequency
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - port
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    i2c0 {
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +
> > +        mt9p031@5d {
> > +            compatible = "aptina,mt9p031";
> > +            reg = <0x5d>;
> > +            reset-gpios = <&gpio_sensor 0 0>;
> > +
> > +            port {
> > +                mt9p031_1: endpoint {
> > +                    input-clock-frequency = <6000000>;
> > +                    pixel-clock-frequency = <96000000>;
> > +                };
> > +            };
> > +        }:
> > +    };
> > +
> > +...
> > diff --git a/Documentation/devicetree/bindings/media/i2c/mt9p031.txt
> > b/Documentation/devicetree/bindings/media/i2c/mt9p031.txt
> > deleted file mode 100644
> > index cb60443ff78f..000000000000
> > --- a/Documentation/devicetree/bindings/media/i2c/mt9p031.txt
> > +++ /dev/null
> > @@ -1,40 +0,0 @@
> > -* Aptina 1/2.5-Inch 5Mp CMOS Digital Image Sensor
> > -
> > -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.
> > -
> > -Required Properties:
> > -- compatible: value should be either one among the following
> > -	(a) "aptina,mt9p031" for mt9p031 sensor
> > -	(b) "aptina,mt9p031m" for mt9p031m sensor
> > -
> > -- input-clock-frequency: Input clock frequency.
> > -
> > -- pixel-clock-frequency: Pixel clock frequency.
> > -
> > -Optional Properties:
> > -- reset-gpios: Chip reset GPIO
> > -
> > -For further reading on port node refer to
> > -Documentation/devicetree/bindings/media/video-interfaces.txt.
> > -
> > -Example:
> > -
> > -	i2c0@1c22000 {
> > -		...
> > -		...
> > -		mt9p031@5d {
> > -			compatible = "aptina,mt9p031";
> > -			reg = <0x5d>;
> > -			reset-gpios = <&gpio3 30 0>;
> > -
> > -			port {
> > -				mt9p031_1: endpoint {
> > -					input-clock-frequency = <6000000>;
> > -					pixel-clock-frequency = <96000000>;
> > -				};
> > -			};
> > -		};
> > -		...
> > -	};
> > diff --git a/MAINTAINERS b/MAINTAINERS
> > index c7456776ace5..f2123226baae 100644
> > --- a/MAINTAINERS
> > +++ b/MAINTAINERS
> > @@ -12610,6 +12610,7 @@ M:	Laurent Pinchart <
> > laurent.pinchart@xxxxxxxxxxxxxxxx>
> >  L:	linux-media@xxxxxxxxxxxxxxx
> >  S:	Maintained
> >  T:	git git://linuxtv.org/media_tree.git
> > +F:	Documentation/devicetree/bindings/media/i2c/aptina,mt9p031.yaml
> >  F:	drivers/media/i2c/mt9p031.c
> >  F:	include/media/i2c/mt9p031.h
> >