Re: [PATCH v3 3/9] media: dt-bindings: cadence-csi2rx: Convert to DT schema

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On 03/04/2023 11:48, Jack Zhu wrote:
> 
> 
> On 2023/4/1 4:12, Krzysztof Kozlowski wrote:
>> On 31/03/2023 14:18, Jack Zhu wrote:
>>> Convert DT bindings document for Cadence MIPI-CSI2 RX controller
>>> to DT schema format.
>>>
>>> Signed-off-by: Jack Zhu <jack.zhu@xxxxxxxxxxxxxxxx>
>>> ---
>>>  .../devicetree/bindings/media/cdns,csi2rx.txt | 100 ----------
>>>  .../bindings/media/cdns,csi2rx.yaml           | 174 ++++++++++++++++++
>>>  MAINTAINERS                                   |   1 +
>>>  3 files changed, 175 insertions(+), 100 deletions(-)
>>>  delete mode 100644 Documentation/devicetree/bindings/media/cdns,csi2rx.txt
>>>  create mode 100644 Documentation/devicetree/bindings/media/cdns,csi2rx.yaml
>>>
>>> diff --git a/Documentation/devicetree/bindings/media/cdns,csi2rx.txt b/Documentation/devicetree/bindings/media/cdns,csi2rx.txt
>>> deleted file mode 100644
>>> index 6b02a0657ad9..000000000000
>>> --- a/Documentation/devicetree/bindings/media/cdns,csi2rx.txt
>>> +++ /dev/null
>>> @@ -1,100 +0,0 @@
>>> -Cadence MIPI-CSI2 RX controller
>>> -===============================
>>> -
>>> -The Cadence MIPI-CSI2 RX controller is a CSI-2 bridge supporting up to 4 CSI
>>> -lanes in input, and 4 different pixel streams in output.
>>> -
>>> -Required properties:
>>> -  - compatible: must be set to "cdns,csi2rx" and an SoC-specific compatible
>>
>>
>> ...
>>
>>> +$id: http://devicetree.org/schemas/media/cdns,csi2rx.yaml#
>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>> +
>>> +title: Cadence MIPI-CSI2 RX controller
>>> +
>>> +maintainers:
>>> +  - Maxime Ripard <mripard@xxxxxxxxxx>
>>> +
>>> +description:
>>> +  The Cadence MIPI-CSI2 RX controller is a CSI-2 bridge supporting up to 4 CSI
>>> +  lanes in input, and 4 different pixel streams in output.
>>> +
>>> +properties:
>>> +  compatible:
>>> +    const: cdns,csi2rx
>>
>> That's not equivalent conversion and your commit msg does no mention any
>> drops in compatibles.
>>
> The equivalent conversion refers to 'an SoC-specific compatible'?

Yes.

> I'm not sure that, is it enough to add a description (drop an 'SoC-specific compatible')
> to my next version commit message?

Original binding did not allow csi2rx compatible alone. Your binding
here allows it, thus it is not simple conversion.

I think patch 5 should be squashed here - with proper explanation.
Usually new compatibles should not be messed with conversion, but this
conversion on its own does not make much sense.



Best regards,
Krzysztof




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