linux-kernel - Re: [PATCH 1/6] dt-bindings: thermal: tsens: Add nvmem cells for calibration data

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Message-ID: <59ea653e-c5da-71cb-eb85-1aa3c72e2089@quicinc.com>
Date:   Tue, 11 Jul 2023 15:09:16 +0530
From:   Praveenkumar I <quic_ipkumar@...cinc.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <amitk@...nel.org>,
        <thara.gopinath@...il.com>, <rafael@...nel.org>,
        <daniel.lezcano@...aro.org>, <rui.zhang@...el.com>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <conor+dt@...nel.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-pm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     <quic_varada@...cinc.com>
Subject: Re: [PATCH 1/6] dt-bindings: thermal: tsens: Add nvmem cells for
 calibration data


On 7/11/2023 1:40 AM, Krzysztof Kozlowski wrote:
> On 10/07/2023 12:37, Praveenkumar I wrote:
>> Add TSENS V2 calibration nvmem cells for IPQ5332
>>
>> Signed-off-by: Praveenkumar I <quic_ipkumar@...cinc.com>
>> ---
>>   .../bindings/thermal/qcom-tsens.yaml          | 26 +++++++++++++++++--
>>   1 file changed, 24 insertions(+), 2 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml b/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
>> index 27e9e16e6455..8b7863c3989e 100644
>> --- a/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
>> +++ b/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
>> @@ -91,7 +91,7 @@ properties:
>>       maxItems: 2
>>   
>>     nvmem-cells:
>> -    oneOf:
>> +    anyOf:
>>         - minItems: 1
>>           maxItems: 2
>>           description:
>> @@ -106,9 +106,13 @@ properties:
>>           description: |
>>             Reference to nvmem cells for the calibration mode, two calibration
>>             bases and two cells per each sensor, main and backup copies, plus use_backup cell
>> +      - maxItems: 17
>> +        description: |
>> +          V2 of TSENS, reference to nvmem cells for the calibration mode, two calibration
>> +          bases and one cell per each sensor
> I think this is already included in one of the previous entries.
> Otherwise, are you sure that all new devices will have exactly 17 entries?
Previous entries does not support TSENS version 2.X.X QFPROM. TSENS V2 
QFPROM has mode, base0, base1 and s[0-15]+_offset.
Ideally it should be like,
- minItems: 4
- maxItems: 19
But dt binding check fails in oneOf / anyOf condition. So added the 
IPQ5332 properties which is exactly 17.
>
>>   
>>     nvmem-cell-names:
>> -    oneOf:
>> +    anyOf:
>>         - minItems: 1
>>           items:
>>             - const: calib
>> @@ -205,6 +209,24 @@ properties:
>>             - const: s9_p2_backup
>>             - const: s10_p1_backup
>>             - const: s10_p2_backup
>> +      - items:
>> +          - const: mode
>> +          - const: base0
>> +          - const: base1
>> +          - const: s0_offset
>> +          - const: s3_offset
>> +          - const: s4_offset
>> +          - const: s5_offset
>> +          - const: s6_offset
>> +          - const: s7_offset
>> +          - const: s8_offset
>> +          - const: s9_offset
>> +          - const: s10_offset
>> +          - const: s11_offset
>> +          - const: s12_offset
>> +          - const: s13_offset
>> +          - const: s14_offset
>> +          - const: s15_offset
> Don't introduce new naming style. Existing uses s[0-9]+, without offset
> suffix. Why this should be different?
As I mentioned above, s[0-9]+_p1 / s[0-9]+p2 is for TSENS V1. TSENS V2 
QFPROM layout is different from the existing one.
I would like to add mode, base0, base1 and 16 patterns 
'^s[0-15]+_offset$'. But DT binding check is failing in oneOf/ anyOf 
condintion.

--
Thanks,
Praveenkumar
>
>>   
>>     "#qcom,sensors":
>>       description:
> Best regards,
> Krzysztof
>