Re: [PATCH v2 1/6] dt-bindings: Document the SYSREG specific compatibles found on FSD SoC

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On 11/11/2022 05:06, Vivek Yadav wrote:
> 
> 
>> -----Original Message-----
>> From: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
>> Sent: 10 November 2022 17:42
>> To: Vivek Yadav <vivek.2311@xxxxxxxxxxx>; rcsekar@xxxxxxxxxxx;
>> krzysztof.kozlowski+dt@xxxxxxxxxx; wg@xxxxxxxxxxxxxx;
>> mkl@xxxxxxxxxxxxxx; davem@xxxxxxxxxxxxx; edumazet@xxxxxxxxxx;
>> kuba@xxxxxxxxxx; pabeni@xxxxxxxxxx; pankaj.dubey@xxxxxxxxxxx;
>> ravi.patel@xxxxxxxxxxx; alim.akhtar@xxxxxxxxxxx; linux-fsd@xxxxxxxxx;
>> robh+dt@xxxxxxxxxx
>> Cc: linux-can@xxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx; linux-
>> kernel@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-
>> samsung-soc@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx;
>> aswani.reddy@xxxxxxxxxxx; sriranjani.p@xxxxxxxxxxx
>> Subject: Re: [PATCH v2 1/6] dt-bindings: Document the SYSREG specific
>> compatibles found on FSD SoC
>>
>> On 10/11/2022 12:18, Vivek Yadav wrote:
>>>>> +maintainers:
>>>>> +  - Alim Akhtar <alim.akhtar@xxxxxxxxxxx>
>>>>> +
>>>>> +description: |
>>>>> +  This is a system control registers block, providing multiple low
>>>>> +level
>>>>> +  platform functions like board detection and identification,
>>>>> +software
>>>>> +  interrupt generation.
>>>>> +
>>>>> +properties:
>>>>> +  compatible:
>>>>> +    oneOf:
>>>>
>>>> No need for oneOf.
>>>>
>>> Removing this results into dt_binding_check error, so this is required.
>>
>> No, this is not required. You do not have more than one condition for oneOf.
>>
> Oh, ok I got it. I was not removing "-" before items, which is resulting an error. I will update this in next patch series. Sorry for confusion.
>>>>> +      - items:
>>>>> +          - enum:
>>>>> +              - tesla,sysreg_fsys0
>>>>> +              - tesla,sysreg_peric
>>>>
>>>> From where did you get underscores in compatibles?
>>>>
>>> I have seen in MCAN Driver <drivers/net/can/m_can/m_can_platform.c>
>> and also too many other yaml files.
>>> Do you have any ref standard guideline of compatible which says
>> underscore is not allowed.
>>
>> git grep compatible arch/arm64/boot/dts/exynos/ | grep _ git grep
>> compatible arch/arm/boot/dts/exynos* | grep _
>>
>> Both give 0 results. For few other SoCs there such cases but that's really,
>> really exception. Drop underscores.
>>
> git grep compatible arch/arm64/boot/dts/ | grep _ | wc -l 
> This gives me 456 location, am I missing anything here ?

You mean entries like this:

arch/arm64/boot/dts/qcom/pmm8155au_1.dtsi:		compatible =
"qcom,pmm8155au", "qcom,spmi-pmic";

or this:

arch/arm64/boot/dts/microchip/sparx5_pcb135_board.dtsi:		compatible =
"gpio-leds";

or this:

arch/arm64/boot/dts/intel/socfpga_agilex.dtsi:			compatible = "fixed-clock";

And how many compatibles are with hyphen, not underscore?

Best regards,
Krzysztof




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