linux-kernel - Re: [PATCH 1/2] media: dt-bindings: media: i2c: document OV4689 DT bindings

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Date:   Tue, 12 Jul 2022 19:40:17 +0300
From:   Mikhail Rudenko <mike.rudenko@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] media: dt-bindings: media: i2c: document OV4689 DT
 bindings


Hi Krzysztof,

On 2022-07-12 at 17:12 +02, Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org> wrote:
> On 12/07/2022 16:19, Mikhail Rudenko wrote:
>> Add device-tree binding documentation for OV4689 image sensor driver,
>> and the relevant MAINTAINERS entries.
>>
>> Signed-off-by: Mikhail Rudenko <mike.rudenko@...il.com>
>> ---
>>  .../bindings/media/i2c/ovti,ov4689.yaml       | 122 ++++++++++++++++++
>>  MAINTAINERS                                   |   7 +
>>  2 files changed, 129 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/media/i2c/ovti,ov4689.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/media/i2c/ovti,ov4689.yaml b/Documentation/devicetree/bindings/media/i2c/ovti,ov4689.yaml
>> new file mode 100644
>> index 000000000000..6bdebe5862b4
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov4689.yaml
>> @@ -0,0 +1,122 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/media/i2c/ovti,ov4689.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Omnivision OV4689 CMOS Sensor Device Tree Bindings
>
> s/Device Tree Bindings//

Ack, will fix in v2.

>> +
>> +maintainers:
>> +  - Mikhail Rudenko <mike.rudenko@...il.com>
>> +
>> +description: |-
>
> No need for -
>

Ack

>> +  The Omnivision OV4689 is a high performance, 1/3-inch, 4 megapixel
>> +  image sensor. Ihis chip supports high frame rate speeds up to 90 fps
>> +  at 2688x1520 resolution. It is programmable through an I2C
>> +  interface, and sensor output is sent via 1/2/4 lane MIPI CSI-2
>> +  connection.
>> +
>> +allOf:
>> +  - $ref: /schemas/media/video-interface-devices.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    const: ovti,ov4689
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +  clock-names:
>> +    description:
>> +      External clock for the sensor.
>
> This goes to clocks instead.
>

Ack

>> +    items:
>> +      - const: xclk
>
> No need for clock-names for such case.
>

Ack

>> +
>> +  dovdd-supply:
>> +    description:
>> +      Definition of the regulator used as Digital I/O voltage supply.
>
> s/Definition of the regulator used as //
>
> It's redundant...
>

Ack

>> +
>> +  avdd-supply:
>> +    description:
>> +      Definition of the regulator used as Analog voltage supply.
>
> Ditto
>

Ack

>> +
>> +  dvdd-supply:
>> +    description:
>> +      Definition of the regulator used as Digital core voltage supply.
>
> Ditto
>

Ack

>> +
>> +  powerdown-gpios:
>> +    maxItems: 1
>> +    description:
>> +      Reference to the GPIO connected to the powerdown pin (active low).
>
> s/Reference to the//
>

Ack

>> +
>> +  reset-gpios:
>> +    maxItems: 1
>> +    description:
>> +      Reference to the GPIO connected to the reset pin (active low).
>
> The same.
>

Ack

>> +
>> +  orientation: true
>> +
>> +  rotation: true
>> +
>> +  port:
>> +    $ref: /schemas/graph.yaml#/$defs/port-base
>> +    additionalProperties: false
>> +    description:
>> +      Output port node, single endpoint describing the CSI-2 transmitter.
>> +
>> +    properties:
>> +      endpoint:
>> +        $ref: /schemas/media/video-interfaces.yaml#
>> +        unevaluatedProperties: false
>> +
>
> Best regards,
> Krzysztof

Thanks for review! By the way, I used an existing schema for a similar
sensor ("ovti,ov02a10.yaml", specifically) as an example, and your notes
apply to it too. Looks like it should also be fixed...


--
Best regards,
Mikhail Rudenko