linux-kernel - Re: [PATCH V1 1/4] dt-bindings: sram: qcom,imem: Add Boot Stat region within IMEM

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Message-ID: <260cf3ae-1acd-c4ac-a42d-4ca848ec5664@quicinc.com>
Date:   Wed, 22 Mar 2023 19:04:05 +0530
From:   Souradeep Chowdhury <quic_schowdhu@...cinc.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, Sibi Sankar <quic_sibis@...cinc.com>,
        Rajendra Nayak <quic_rjendra@...cinc.com>
Subject: Re: [PATCH V1 1/4] dt-bindings: sram: qcom,imem: Add Boot Stat region
 within IMEM



On 3/21/2023 11:01 PM, Krzysztof Kozlowski wrote:
> On 21/03/2023 14:51, 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@...cinc.com>
>> ---
>>   .../devicetree/bindings/sram/qcom,imem.yaml          | 20 ++++++++++++++++++++
>>   1 file changed, 20 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/sram/qcom,imem.yaml b/Documentation/devicetree/bindings/sram/qcom,imem.yaml
>> index 665c06e..c8c3890 100644
>> --- a/Documentation/devicetree/bindings/sram/qcom,imem.yaml
>> +++ b/Documentation/devicetree/bindings/sram/qcom,imem.yaml
>> @@ -48,6 +48,26 @@ patternProperties:
>>       $ref: /schemas/remoteproc/qcom,pil-info.yaml#
>>       description: Peripheral image loader relocation region
>>   
>> +  "^boot-stat@[0-9a-f]+$":
>> +    type: object
>> +    description:
>> +      node for boot stat.
> 
> This basically copies the name of node, so not really helpful. Describe
> what's this.

Ack
> 
>> +
> 
> additionalProperties: false
> 
>> +    properties:
>> +      compatible:
>> +        items:
> 
> Drop items.
> 
>> +          - const: qcom,imem-boot_stats
> 
> No underscores in compatibles. Why this is not SoC specific compatible?

Ack. The boot_stats module is not specific to a device. It is written to
read some values from this imem region which is present for almost all 
QCOM SoCs. So SoC specific compatible is not given in this case.

> 
>> +
>> +      reg:
>> +        maxItems: 1
>> +        description:
>> +          The base address of the register region in case of
>> +          imem boot stats.
> 
> Drop description, it's obvious.

Ack
>> +
>> +    required:
>> +      - compatible
>> +      - reg
>> +
> Best regards,
> Krzysztof
>