linux-kernel - Re: [PATCH 4/6] dt-bindings: riscv: Add DT binding documentation for Renesas RZ/Five SoC and SMARC EVK

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Message-ID: <e64cc15e-b31e-876d-b3cf-b60d255c495b@linaro.org>
Date:   Wed, 27 Jul 2022 11:54:47 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     "Lad, Prabhakar" <prabhakar.csengg@...il.com>
Cc:     Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Anup Patel <anup@...infault.org>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Biju Das <biju.das.jz@...renesas.com>
Subject: Re: [PATCH 4/6] dt-bindings: riscv: Add DT binding documentation for
 Renesas RZ/Five SoC and SMARC EVK

On 27/07/2022 11:05, Lad, Prabhakar wrote:
> Hi Krzysztof,
> 
> Thank you for the review.
> 
> On Wed, Jul 27, 2022 at 9:54 AM Krzysztof Kozlowski
> <krzysztof.kozlowski@...aro.org> wrote:
>>
>> On 26/07/2022 20:06, Lad Prabhakar wrote:
>>> Document Renesas RZ/Five (R9A07G043) SoC and SMARC EVK based on this SoC.
>>>
>>> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
>>> ---
>>>  .../devicetree/bindings/riscv/renesas.yaml    | 49 +++++++++++++++++++
>>>  1 file changed, 49 insertions(+)
>>>  create mode 100644 Documentation/devicetree/bindings/riscv/renesas.yaml
>>>
>>> diff --git a/Documentation/devicetree/bindings/riscv/renesas.yaml b/Documentation/devicetree/bindings/riscv/renesas.yaml
>>> new file mode 100644
>>> index 000000000000..f72f8aea6a82
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/riscv/renesas.yaml
>>> @@ -0,0 +1,49 @@
>>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>>> +%YAML 1.2
>>> +---
>>> +$id: http://devicetree.org/schemas/riscv/renesas.yaml#
>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>> +
>>> +title: Renesas RZ/Five Platform Device Tree Bindings
>>> +
>>> +maintainers:
>>> +  - Geert Uytterhoeven <geert+renesas@...der.be>
>>> +  - Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
>>> +
>>> +# We want to ignore this schema if the board is SMARC EVK based on ARM64 arch
>>> +select:
>>> +  not:
>>> +    properties:
>>> +      compatible:
>>> +        contains:
>>> +          items:
>>
>> I think you should rather ignore the RiscV SoCs, not specific board.
>>
> You mean to ignore ARM/64 SoCs?
> 
> Agreed just the below enum, should do the trick.
> 
>             - enum:
>                 - renesas,r9a07g043u11
>                 - renesas,r9a07g043u12
>                 - renesas,r9a07g044c1
>                 - renesas,r9a07g044c2
>                 - renesas,r9a07g044l1
>                 - renesas,r9a07g044l2
>                 - renesas,r9a07g054l1
>                 - renesas,r9a07g054l2
> 
> 
>>> +            - const: renesas,smarc-evk
>>> +            - enum:
>>> +                - renesas,r9a07g043u11
>>> +                - renesas,r9a07g043u12
>>> +                - renesas,r9a07g044c1
>>> +                - renesas,r9a07g044c2
>>> +                - renesas,r9a07g044l1
>>> +                - renesas,r9a07g044l2
>>> +                - renesas,r9a07g054l1
>>> +                - renesas,r9a07g054l2
>>> +            - enum:
>>> +                - renesas,r9a07g043
>>> +                - renesas,r9a07g044
>>> +                - renesas,r9a07g054
>>
>> Did you actually test that it works and properly matches?
>>
> Yes I have run the dtbs_check and dt_binding _check for ARM64 and
> RISC-V. Do you see any cases where it can fail?


Just remove the renesas,smarc-evk2 from
arch/arm64/boot/dts/renesas/r9a07g043u11-smarc.dts. Do you see the
error? Not from this schema. The only error you will see is that no
matching schema was found.

I don't think you can use such selects...

Best regards,
Krzysztof