Re: [PATCH 3/4] media: dt-bindings: media: nxp,imx-isi: i.MX93 support

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On 25/06/2023 10:22, Krzysztof Kozlowski wrote:
> On 25/06/2023 10:09, guoniu.zhou@xxxxxxxxxxx wrote:
>> From: "Guoniu.zhou" <guoniu.zhou@xxxxxxx>
>>
>> Add i.MX93 support since it reuse ISI which used in i.MX8M family.
>>
>> Signed-off-by: Guoniu.zhou <guoniu.zhou@xxxxxxx>
> 
> Subject: Drop duplicated "media:"
> 
>> ---
>>  Documentation/devicetree/bindings/media/nxp,imx-isi.yaml | 5 ++++-
>>  1 file changed, 4 insertions(+), 1 deletion(-)
>>
>> diff --git a/Documentation/devicetree/bindings/media/nxp,imx-isi.yaml b/Documentation/devicetree/bindings/media/nxp,imx-isi.yaml
>> index 1ce9440bde32..ddad1d8778f3 100644
>> --- a/Documentation/devicetree/bindings/media/nxp,imx-isi.yaml
>> +++ b/Documentation/devicetree/bindings/media/nxp,imx-isi.yaml
>> @@ -21,6 +21,7 @@ properties:
>>      enum:
>>        - fsl,imx8mn-isi
>>        - fsl,imx8mp-isi
>> +      - fsl,imx93-isi
> 
> Imx93 is a family of devices, not specific device, so I hope you
> understand that it is a bit against the recommendation of specific
> compatibles and you guarantee that all devices within family will be
> identical.


And looking more this won't be true. There are significant differences
between devices in the "imx93" family:
1. number of A55 cores and their frequency
2. Presence or not of NPU
3. MIPI-CSI or Parallel camera
4. MIPI-DSI, LVDS or Parallel display
5. 1 or 2 Gigabit Ethernet

Why NXP just cannot follow standard rules here?

https://elixir.bootlin.com/linux/v6.1-rc1/source/Documentation/devicetree/bindings/writing-bindings.rst#L42


Best regards,
Krzysztof




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