linux-kernel - Re: [PATCH v2 1/2] dt-bindings: soc: bcm: bcm2835-vchiq: Add support for bcm2711

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Message-ID: <2c6b873f-a971-e79a-6a32-f101bda46e93@kernel.org>
Date:   Fri, 25 Mar 2022 08:16:40 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Adrien Thierry <athierry@...hat.com>, linux-kernel@...r.kernel.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Nicolas Saenz Julienne <nsaenz@...nel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Stefan Wahren <stefan.wahren@...e.com>,
        devicetree@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Gaston Gonzalez <gascoar@...il.com>,
        Ojaswin Mujoo <ojaswin98@...il.com>,
        linux-staging@...ts.linux.dev
Subject: Re: [PATCH v2 1/2] dt-bindings: soc: bcm: bcm2835-vchiq: Add support
 for bcm2711

On 24/03/2022 19:47, Krzysztof Kozlowski wrote:
> On 24/03/2022 18:26, Adrien Thierry wrote:
>> Add a new compatible string for BCM2711. This is the chip used on the
>> Raspberry Pi 4.
>>
>> Signed-off-by: Adrien Thierry <athierry@...hat.com>
>> ---
>> Changes since v1:
>> - Removed duplicate compatible string for bcm2711
>>
>>  .../devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.yaml      | 5 +++++
>>  1 file changed, 5 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.yaml b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.yaml
>> index e04439b3355b..9cb957facae0 100644
>> --- a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.yaml
>> +++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.yaml
>> @@ -27,6 +27,11 @@ properties:
>>                - brcm,bcm2836-vchiq
>>            - const: brcm,bcm2835-vchiq
>>  
>> +      - description: BCM2711 based boards
>> +        items:
>> +          - enum:
>> +              - brcm,bcm2711-vchiq
> 
> This oneOf here - just to add description which is copy-paste of
> compatible - does not make sense. It should be just enum with
> compatibles. At least for 2711 and 2835 (and put them in alphabetical
> order).

Actually, judging by your driver and DTS, it seems that this should be
list of items bcm2711 followed by bcm2836.


Best regards,
Krzysztof