linux-kernel - Re: [PATCH 1/3] dt-bindings: timer: exynos4210-mct: describe known hardware and its interrupts

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Message-ID: <3c71e9af-b1f1-4954-b09f-9dc4d68844f3@canonical.com>
Date:   Fri, 4 Mar 2022 13:02:52 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Alim Akhtar <alim.akhtar@...sung.com>,
        'Daniel Lezcano' <daniel.lezcano@...aro.org>,
        'Thomas Gleixner' <tglx@...utronix.de>,
        'Rob Herring' <robh+dt@...nel.org>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH 1/3] dt-bindings: timer: exynos4210-mct: describe known
 hardware and its interrupts

On 04/03/2022 11:52, Alim Akhtar wrote:
> Hi Krzysztof
> 
>> -----Original Message-----
>> From: Krzysztof Kozlowski [mailto:krzysztof.kozlowski@...onical.com]
>> Sent: Friday, February 25, 2022 9:07 PM
>> To: Daniel Lezcano <daniel.lezcano@...aro.org>; Thomas Gleixner
>> <tglx@...utronix.de>; Rob Herring <robh+dt@...nel.org>; Krzysztof Kozlowski
>> <krzysztof.kozlowski@...onical.com>; Alim Akhtar
>> <alim.akhtar@...sung.com>; linux-kernel@...r.kernel.org;
>> devicetree@...r.kernel.org; linux-arm-kernel@...ts.infradead.org; linux-
>> samsung-soc@...r.kernel.org
>> Subject: [PATCH 1/3] dt-bindings: timer: exynos4210-mct: describe known
>> hardware and its interrupts
>>
>> Most of the Samsung Exynos SoCs use almost the same Multi-Core Timer block,
>> so only two compatibles were used so far (for Exynos4210 and
>> Exynos4412 flavors) with Exynos4210-one being used in most of the SoCs.
>> However the Exynos4210 flavor actually differs by number of interrupts.
>>
>> Add new compatibles, maintaining backward compatibility with Exynos4210,
> and
>> constraints for number of interrupts.  This allows to exactly match the
> Exynos
>> MCT hardware.
>>
>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
>> ---
>> .../timer/samsung,exynos4210-mct.yaml         | 55 ++++++++++++++++++-
>> 1 file changed, 52 insertions(+), 3 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/timer/samsung,exynos4210-
>> mct.yaml b/Documentation/devicetree/bindings/timer/samsung,exynos4210-
>> mct.yaml
>> index f11cbc7ccc14..d4e23fd7a1da 100644
>> --- a/Documentation/devicetree/bindings/timer/samsung,exynos4210-mct.yaml
>> +++ b/Documentation/devicetree/bindings/timer/samsung,exynos4210-mct.yam
>> +++ l
>> @@ -19,9 +19,20 @@ description: |+
>>
>> properties:
>>   compatible:
>> -    enum:
>> -      - samsung,exynos4210-mct
>> -      - samsung,exynos4412-mct
>> +    oneOf:
>> +      - enum:
>> +          - samsung,exynos4210-mct
>> +          - samsung,exynos4412-mct
>> +      - items:
>> +          - enum:
>> +              - samsung,exynos3250-mct
>> +              - samsung,exynos5250-mct
>> +              - samsung,exynos5260-mct
>> +              - samsung,exynos5420-mct
>> +              - samsung,exynos5433-mct
>> +              - samsung,exynos850-mct
>> +              - tesla,fsd-mct
>> +          - const: samsung,exynos4210-mct
>>
>>   clocks:
>>     minItems: 2
>> @@ -63,6 +74,44 @@ required:
>>   - interrupts
>>   - reg
>>
>> +allOf:
>> +  - if:
>> +      properties:
>> +        compatible:
>> +          contains:
>> +            const: samsung,exynos3250-mct
>> +    then:
>> +      properties:
>> +        interrupts:
>> +          minItems: 8
>> +          maxItems: 8
>> +
>> +  - if:
>> +      properties:
>> +        compatible:
>> +          contains:
>> +            const: samsung,exynos5250-mct
>> +    then:
>> +      properties:
>> +        interrupts:
>> +          minItems: 6
>> +          maxItems: 6
>> +
>> +  - if:
>> +      properties:
>> +        compatible:
>> +          contains:
>> +            enum:
>> +              - samsung,exynos5260-mct
>> +              - samsung,exynos5420-mct
>> +              - samsung,exynos5433-mct
>> +              - samsung,exynos850-mct
>> +    then:
>> +      properties:
>> +        interrupts:
>> +          minItems: 12
>> +          maxItems: 12
>> +
> 
> Probably you can update the list for tesla,fsd-mct as well in this patch
> (as the support was added recently)

Right.


Best regards,
Krzysztof