Re: [PATCH V4 1/3] dt-bindings: sram: qcom,imem: Add Boot Stat region within IMEM

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On 04/05/2023 00:10, Caleb Connolly wrote:
> 
> 
> On 17/04/2023 16:08, Souradeep Chowdhury wrote:
>> All Qualcomm bootloaders log useful timestamp information related
>> to bootloader stats in the IMEM region. Add the child node within
>> IMEM for the boot stat region containing register address and
>> compatible string.
>>
>> Signed-off-by: Souradeep Chowdhury <quic_schowdhu@xxxxxxxxxxx>
>> ---
>>  .../devicetree/bindings/sram/qcom,imem.yaml        | 22 ++++++++++++++++++++++
>>  1 file changed, 22 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/sram/qcom,imem.yaml b/Documentation/devicetree/bindings/sram/qcom,imem.yaml
>> index ba694ce..d028bed 100644
>> --- a/Documentation/devicetree/bindings/sram/qcom,imem.yaml
>> +++ b/Documentation/devicetree/bindings/sram/qcom,imem.yaml
>> @@ -49,6 +49,28 @@ patternProperties:
>>      $ref: /schemas/remoteproc/qcom,pil-info.yaml#
>>      description: Peripheral image loader relocation region
>>
>> +  "^stats@[0-9a-f]+$":
>> +    type: object
>> +    description:
>> +      Imem region dedicated for storing timestamps related
>> +      information regarding bootstats.
>> +
>> +    additionalProperties: false
>> +
>> +    properties:
>> +      compatible:
>> +        items:
>> +          - enum:
>> +              - qcom,sm8450-bootstats
> 
> This region isn't exclusive to sm8450, it exists also on sdm845 and
> presumably other platforms. Is there any need for an SoC specific
> compatible?

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

Also see many discussions on LKML about this.

Best regards,
Krzysztof




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