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Message-ID: <5c7b41bb-8e4e-44b2-9fd6-b5dd9258ee4e@kernel.org>
Date: Sat, 29 Mar 2025 06:42:27 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Benjamin Mugnier <benjamin.mugnier@...s.st.com>,
 Sylvain Petinot <sylvain.petinot@...s.st.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc: linux-media@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] media: dt-bindings: Add ST VD55G1 camera sensor
 binding

On 28/03/2025 14:40, Benjamin Mugnier wrote:
> +
> +allOf:
> +  - $ref: /schemas/media/video-interface-devices.yaml#
> +
> +properties:
> +  compatible:
> +    const: st,st-vd55g1

Drop st. See your filename how this should be called. Anyway, filename
must match the compatible.

> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  vcore-supply:
> +    description: Digital core power supply (1.15V)
> +
> +  vddio-supply:
> +    description: Digital IO power supply (1.8V)
> +
> +  vana-supply:
> +    description: Analog power supply (2.8V)
> +
> +  reset-gpios:
> +    description: Sensor reset active low GPIO (XSHUTDOWN)
> +    maxItems: 1
> +
> +  st,leds:
> +    description:
> +      List sensor's GPIOs used to control strobe light sources during exposure
> +      time. The numbers identify the sensor pin on which the illumination
> +      system is connected. GPIOs are active-high.
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    minItems: 1
> +    maxItems: 4
> +    items:
> +      minimum: 0
> +      maximum: 3
> +
> +  port:
> +    $ref: /schemas/graph.yaml#/$defs/port-base
> +    additionalProperties: false
> +
> +    properties:
> +      endpoint:
> +        $ref: /schemas/media/video-interfaces.yaml#
> +        unevaluatedProperties: false
> +
> +        properties:
> +          data-lanes:
> +            description:
> +              VD55G1 only has one data lane, and must be 1.
> +            maxItems: 1
> +            items:
> +              const: 1

Instead of five lines, just two:

items:
  - const: 1

Don't repeat constraints in free form text.


> +
> +          link-frequencies:
> +            maxItems: 1
> +            items:
> +              minimum: 125000000
> +              maximum: 600000000
> +
> +          lane-polarities:
> +            minItems: 1
> +            maxItems: 2
> +
> +        required:
> +          - data-lanes
> +          - link-frequencies
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - vcore-supply
> +  - vddio-supply
> +  - vana-supply
> +  - reset-gpios
> +  - port
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        camera-sensor@10 {
> +            compatible = "st,vd55g1";

And here another compatible...

> +            reg = <0x10>;
> +
> +            clocks = <&camera_clk_12M>;
> +
> +            vcore-supply = <&camera_vcore_v1v15>;
> +            vddio-supply = <&camera_vddio_v1v8>;
> +            vana-supply = <&camera_vana_v2v8>;
> +
> +            reset-gpios = <&gpio 5 GPIO_ACTIVE_LOW>;
> +            st,leds = <2>;
> +
> +            orientation = <2>;
> +            rotation = <0>;
> +
> +            port {
> +                endpoint {
> +                    data-lanes = <1>;
> +                    link-frequencies = /bits/ 64 <600000000>;
> +                    remote-endpoint = <&csiphy0_ep>;
> +                };
> +            };
> +        };
> +    };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 2286200b355bde3604607be916ef09aa88feed0e..857af27ef392b6e6865d9a545061d1b012cce07e 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -22410,6 +22410,14 @@ S:	Maintained
>  F:	Documentation/hwmon/stpddc60.rst
>  F:	drivers/hwmon/pmbus/stpddc60.c
>  
> +ST VD55G1 DRIVER
> +M:	Benjamin Mugnier <benjamin.mugnier@...s.st.com>
> +M:	Sylvain Petinot <sylvain.petinot@...s.st.com>
> +L:	linux-media@...r.kernel.org
> +S:	Maintained
> +T:	git git://linuxtv.org/media.git

Drop, unless you push patches there. Otherwise what is the point of
duplicating subsystem data?

> +F:	Documentation/devicetree/bindings/media/i2c/st,vd55g1.yaml
> +
>  ST VGXY61 DRIVER
>  M:	Benjamin Mugnier <benjamin.mugnier@...s.st.com>
>  M:	Sylvain Petinot <sylvain.petinot@...s.st.com>
> 


Best regards,
Krzysztof

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