linux-kernel - Re: [PATCH 2/3] dt-bindings: arm: qcom: Add MSM8926 and Samsung Galaxy Tab 4 10.1 LTE

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Date:   Mon, 23 Jan 2023 18:11:42 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Stefan Hansson <newbyte@...tmarketos.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
        soc@...nel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        matti.lehtimaki@...il.com
Subject: Re: [PATCH 2/3] dt-bindings: arm: qcom: Add MSM8926 and Samsung
 Galaxy Tab 4 10.1 LTE

On 23/01/2023 18:10, Krzysztof Kozlowski wrote:
> On 22/01/2023 15:47, Stefan Hansson wrote:
>> MSM8926 (also known as Snapdragon 400) is very similar to MSM8226 and
>> APQ8026 with the primary difference being that it features an LTE modem
>> unlike the former two which feature a 3G modem and a GPS-only modem,
>> respectively.
>>
>> This also documents Samsung Galaxy Tab 4 10.1 LTE (samsung,matisselte)
>> which is a tablet by Samsung based on the MSM8926 SoC.
>>
>> Signed-off-by: Stefan Hansson <newbyte@...tmarketos.org>
>> ---
>>  Documentation/devicetree/bindings/arm/qcom.yaml | 6 ++++++
>>  1 file changed, 6 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/arm/qcom.yaml b/Documentation/devicetree/bindings/arm/qcom.yaml
>> index 47913a8e3eea..7a0b2088ead9 100644
>> --- a/Documentation/devicetree/bindings/arm/qcom.yaml
>> +++ b/Documentation/devicetree/bindings/arm/qcom.yaml
>> @@ -35,6 +35,7 @@ description: |
>>          mdm9615
>>          msm8226
>>          msm8916
>> +        msm8926
>>          msm8953
>>          msm8956
>>          msm8974
>> @@ -219,6 +220,11 @@ properties:
>>            - const: qcom,msm8916-v1-qrd/9-v1
>>            - const: qcom,msm8916
>>  
>> +      - items:
>> +          - enum:
>> +              - samsung,matisselte
> 
> 1. matisse is the code name, lte is version/suffix. I don't think they
> should be together, because then it looks like "matisselte" is a name.
> It actually sounds like one word.

Update: there is already matisse-wifi, so please follow the same naming
convention. Version suffix should be separated with hyphen.

> 
> 2. You base on other SoC but you do not include its compatibles. Why? Is
> it intended? None of the properties applicable to other SoC will match
> here, thus I actually wonder if you run dtbs_check...

Best regards,
Krzysztof