linux-kernel - Re: [PATCH v3 1/4] dt-bindings: rng: add st,stm32mp25-rng support

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Message-ID: <050d36ef-b674-4204-a731-7bcfb936e3aa@foss.st.com>
Date: Wed, 16 Oct 2024 10:00:21 +0200
From: Gatien CHEVALLIER <gatien.chevallier@...s.st.com>
To: Rob Herring <robh@...nel.org>
CC: Olivia Mackall <olivia@...enic.com>,
        Herbert Xu
	<herbert@...dor.apana.org.au>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Maxime Coquelin
	<mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Lionel Debieve <lionel.debieve@...s.st.com>, <marex@...x.de>,
        <linux-crypto@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 1/4] dt-bindings: rng: add st,stm32mp25-rng support



On 10/16/24 00:17, Rob Herring wrote:
> On Tue, Oct 15, 2024 at 06:48:54PM +0200, Gatien Chevallier wrote:
>> Add RNG STM32MP25x platforms compatible. Update the clock
>> properties management to support all versions.
>>
>> Signed-off-by: Gatien Chevallier <gatien.chevallier@...s.st.com>
>> ---
>> Changes in V3:
>> 	- Add constraint on clock-names for st,stm32mp25-rng compatible
>>
>> Changes in V2
>> 	-Fix missing min/maxItems
>> 	-Removed MP25 RNG example
>> 	-Renamed RNG clocks for mp25 to "core" and "bus"
>> ---
>>   .../devicetree/bindings/rng/st,stm32-rng.yaml      | 34 +++++++++++++++++++++-
>>   1 file changed, 33 insertions(+), 1 deletion(-)
>>
>> diff --git a/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml b/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml
>> index 340d01d481d12ce8664a60db42182ddaf0d1385b..c276723d566ce4a0d6deca10c491510644d842f8 100644
>> --- a/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml
>> +++ b/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml
>> @@ -18,12 +18,20 @@ properties:
>>       enum:
>>         - st,stm32-rng
>>         - st,stm32mp13-rng
>> +      - st,stm32mp25-rng
>>   
>>     reg:
>>       maxItems: 1
>>   
>>     clocks:
>> -    maxItems: 1
>> +    minItems: 1
>> +    maxItems: 2
>> +
>> +  clock-names:
>> +    minItems: 1
>> +    items:
>> +      - const: core
>> +      - const: bus
>>   
>>     resets:
>>       maxItems: 1
>> @@ -57,6 +65,30 @@ allOf:
>>         properties:
>>           st,rng-lock-conf: false
>>   
>> +  - if:
>> +      properties:
>> +        compatible:
>> +          contains:
>> +            enum:
>> +              - st,stm32-rng
>> +              - st,stm32mp13-rng
>> +    then:
>> +      properties:
>> +        clocks:
>> +          maxItems: 1
>> +        clock-names: false
> 
> It makes no sense that you allowed 1 entry, but then disallow the
> property. Either drop the 'minItems: 1' at the top level (keeping this)
> or put 'maxItems: 1' here,
> 
>> +    else:
>> +      properties:
>> +        clocks:
>> +          minItems: 2
>> +          maxItems: 2
> 
> maxItems is already 2. Only need minItems.
> 
>> +        clock-names:
>> +          items:
>> +            - const: core
>> +            - const: bus
> 
> You already defined the names, don't do it again. You need either
> nothing or 'minItems: 2' depending on the above.
> 

Actually, I'll do it the other way around, sorry for the noise.
I'll remove this and remove minItems at the top level to keep the
item list.

>> +      required:
>> +        - clock-names
>> +
>>   additionalProperties: false
>>   
>>   examples:
>>
>> -- 
>> 2.25.1
>>