linux-kernel - Re: [PATCH v2 3/6] dt-bindings: soc: starfive: syscon: Add optional patternProperties

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Message-ID: <e3604902-2b7d-6ca5-9523-04dc09c920ed@starfivetech.com>
Date:   Mon, 20 Mar 2023 17:16:20 +0800
From:   Xingyu Wu <xingyu.wu@...rfivetech.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        William Qiu <william.qiu@...rfivetech.com>
CC:     <linux-riscv@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        "Michael Turquette" <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        "Philipp Zabel" <p.zabel@...gutronix.de>,
        Conor Dooley <conor@...nel.org>,
        "Emil Renner Berthing" <kernel@...il.dk>,
        Rob Herring <robh+dt@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Hal Feng <hal.feng@...rfivetech.com>,
        <linux-kernel@...r.kernel.org>, <linux-clk@...r.kernel.org>
Subject: Re: [PATCH v2 3/6] dt-bindings: soc: starfive: syscon: Add optional
 patternProperties

On 2023/3/20 16:36, Krzysztof Kozlowski wrote:
> On 20/03/2023 09:26, Xingyu Wu wrote:
>> On 2023/3/20 15:40, Krzysztof Kozlowski wrote:
>>> On 20/03/2023 08:29, Xingyu Wu wrote:
>>>> On 2023/3/20 14:37, Krzysztof Kozlowski wrote:
>>>>> On 20/03/2023 04:54, Xingyu Wu wrote:
>>>>>> On 2023/3/19 20:28, Krzysztof Kozlowski wrote:
>>>>>>> On 16/03/2023 04:05, Xingyu Wu wrote:
>>>>>>>> Add optional compatible and patternProperties.
>>>>>>>>
>>>>>>>> Signed-off-by: Xingyu Wu <xingyu.wu@...rfivetech.com>
>>>>>>>> ---
>>>>>>>>  .../soc/starfive/starfive,jh7110-syscon.yaml  | 39 ++++++++++++++++---
>>>>>>>>  1 file changed, 33 insertions(+), 6 deletions(-)
>>>>>>>>
>>>>>>>> diff --git a/Documentation/devicetree/bindings/soc/starfive/starfive,jh7110-syscon.yaml b/Documentation/devicetree/bindings/soc/starfive/starfive,jh7110-syscon.yaml
>>>>>>>> index ae7f1d6916af..b61d8921ef42 100644
>>>>>>>> --- a/Documentation/devicetree/bindings/soc/starfive/starfive,jh7110-syscon.yaml
>>>>>>>> +++ b/Documentation/devicetree/bindings/soc/starfive/starfive,jh7110-syscon.yaml
>>>>>>>> @@ -15,16 +15,31 @@ description: |
>>>>>>>>  
>>>>>>>>  properties:
>>>>>>>>    compatible:
>>>>>>>> -    items:
>>>>>>>> -      - enum:
>>>>>>>> -          - starfive,jh7110-aon-syscon
>>>>>>>> -          - starfive,jh7110-stg-syscon
>>>>>>>> -          - starfive,jh7110-sys-syscon
>>>>>>>> -      - const: syscon
>>>>>>>> +    oneOf:
>>>>>>>> +      - items:
>>>>>>>> +          - enum:
>>>>>>>> +              - starfive,jh7110-aon-syscon
>>>>>>>> +              - starfive,jh7110-stg-syscon
>>>>>>>> +              - starfive,jh7110-sys-syscon
>>>>>>>> +          - const: syscon
>>>>>>>> +      - items:
>>>>>>>> +          - enum:
>>>>>>>> +              - starfive,jh7110-aon-syscon
>>>>>>>> +              - starfive,jh7110-stg-syscon
>>>>>>>> +              - starfive,jh7110-sys-syscon
>>>>>>>> +          - const: syscon
>>>>>>>> +          - const: simple-mfd
>>>
>>> BTW, this also looks wrong. You just said that clock controller exists
>>> only in few variants. Also, why sometimes the same device  goes with
>>> simple-mfd and sometimies without? It's the same device.
>> 
>> Oh yes, If modified to:
>> 
>> oneOf:
>>       - items:
>>           - enum:
>>               - starfive,jh7110-aon-syscon
>>               - starfive,jh7110-stg-syscon
>>           - const: syscon
>>       - items:
>>           - const: starfive,jh7110-sys-syscon
>>           - const: syscon
>>           - const: simple-mfd
>> 
>> Or:
>> 
>>      - minItems: 2
>>        items:
>>          - enum:
>>              - starfive,jh7110-aon-syscon
>>              - starfive,jh7110-stg-syscon
>>              - starfive,jh7110-sys-syscon
>>          - const: syscon
>>          - const: simple-mfd
>> 
>> 
>> Which one is better?
> 
> If aon and stg are not supposed to have children, then only the first is
> correct. It's not which is better, the second is not really correct in
> such case.
> 

OK, will modify it in next version. Thanks.

Best regards,
Xingyu Wu