Re: [PATCH 1/2] arm64: dts: qcom: msm8996-xiaomi-natrium: Add support for Xiaomi Mi 5s Plus

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On 19/05/2022 12:01, Krzysztof Kozlowski wrote:
> On 19/05/2022 11:57, Yassine Oudjana wrote:
>>>
>>> There is no such property documented. Either add bindings, or drop.
>>>
>>>> + qcom,board-id = <47 0>;
>>>
>>>
>>> The same.
>>
>> These properties are already used in many device trees; they are
>> needed to let the bootloader pick a DTB, but yes they aren't
>> documented currently. devicetree/bindings/arm/qcom.yaml would
>> probably be a good place to put them.
> 
> Which means each person is using them and not caring about
> documenting... they need to be documented. I am not even sure if they
> should be accepted.
> 
> The DTS describes hardware, not bootloader specific details. The
> hardware - board - is defined by compatible and bootloader should use
> it. Adding new properties because someone decided "I don't like
> compatibles" is not appropriate.

There is prior art:
https://lkml.org/lkml/2015/10/26/651
https://lore.kernel.org/all/CAL_JsqJAOEvs08Jydn9wWtM7-Oxd=MmmDER48VRF7z3Gkzt0CQ@xxxxxxxxxxxxxx/


Best regards,
Krzysztof



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