Re: [PATCH v2 1/2] media: dt-bindings: media: i2c: document OV4689 DT bindings

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Hi Krzysztof,

On 2022-09-12 at 12:55 +02, Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> wrote:
> On 11/09/2022 22:01, 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@xxxxxxxxx>
>
> Too many "media" prefixes in the subject.

I see, will drop the first "media:" in v3.

> Also you duplicated dt
> bindings as prefix and commit msg (skip the latter).

Just to be clear, do you mean dropping "device-tree binding" phrase from
the commit message?

>> ---
>>  .../bindings/media/i2c/ovti,ov4689.yaml       | 141 ++++++++++++++++++
>>  MAINTAINERS                                   |   7 +
>>  2 files changed, 148 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..376330b5572a
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov4689.yaml
>> @@ -0,0 +1,141 @@
>> +# 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
>> +
>> +maintainers:
>> +  - Mikhail Rudenko <mike.rudenko@xxxxxxxxx>
>> +
>> +description: |
>> +  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:
>> +    description:
>> +      External clock (XVCLK) for the sensor, 6-64 MHz
>> +    maxItems: 1
>> +
>> +  clock-names: true
>
> This has to be strictly defined - which name you expect.

Will fix in v3. Or maybe we should drop clock-names altogether and use
devm_clk_get(&client->dev, NULL) in the driver instead (I've seen this
approach in some existing drivers)?

>> +
>> +  dovdd-supply:
>> +    description:
>> +      Digital I/O voltage supply, 1.7-3.0 V
>> +
>> +  avdd-supply:
>> +    description:
>> +      Analog voltage supply, 2.6-3.0 V
>> +
>> +  dvdd-supply:
>> +    description:
>> +      Digital core voltage supply, 1.1-1.3 V
>> +
>> +  powerdown-gpios:
>> +    maxItems: 1
>
> You can skip here maxItems - it is defined by gpio-consumer-common.

Ack, will fix in v3. Does this also apply to reset-gpios?

>> +    description:
>> +      GPIO connected to the powerdown pin (active low)
>> +
>> +  reset-gpios:
>> +    maxItems: 1
>> +    description:
>> +      GPIO connected to the reset pin (active low)
>> +
>
> Best regards,
> Krzysztof

Thanks for review,

--
Best regards,
Mikhail Rudenko



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