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Message-ID: <20ab0093-5ae1-461b-962d-ada2e6ba52b9@kernel.org>
Date: Tue, 21 May 2024 10:02:13 +0200
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Subject: Re: [PATCH 6/8] dt-bindings: mfd: syscon: Split and enforce
 documenting MFD children
To: Rob Herring <robh@kernel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: Lee Jones <lee@kernel.org>, Krzysztof Kozlowski <krzk+dt@kernel.org>,
 Conor Dooley <conor+dt@kernel.org>, Lars Povlsen
 <lars.povlsen@microchip.com>, Steen Hegelund <Steen.Hegelund@microchip.com>,
 Daniel Machon <daniel.machon@microchip.com>, UNGLinuxDriver@microchip.com,
 Nishanth Menon <nm@ti.com>, Matthias Brugger <matthias.bgg@gmail.com>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>,
 Jiaxun Yang <jiaxun.yang@flygoat.com>, devicetree@vger.kernel.org,
 linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
 linux-mediatek@lists.infradead.org
References: <20240519-dt-bindings-mfd-syscon-split-v1-0-aaf996e2313a@linaro.org>
 <20240519-dt-bindings-mfd-syscon-split-v1-6-aaf996e2313a@linaro.org>
 <20240520212025.GA1531862-robh@kernel.org>
From: Krzysztof Kozlowski <krzk@kernel.org>
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In-Reply-To: <20240520212025.GA1531862-robh@kernel.org>
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On 20/05/2024 23:20, Rob Herring wrote:
> On Sun, May 19, 2024 at 08:42:21PM +0200, Krzysztof Kozlowski wrote:
>> Simple syscon nodes can be documented in common syscon.yaml, however
>> devices with simple-mfd compatible, thus with some children, should have
>> their own schema listing these children.  Such listing makes the binding
>> specific, allows better validation (so the incorrect child would not
>> appear in the simple-mfd node) and actually enforces repeated rule for
>> simple-mfd devices:
>>
>>   "simple-mfd" is only for simple devices, where the children do not
>>   depend on the parent.
>>
>> Currently the syscon+simple-mfd binding is quite broad and allows
>> any child or property, thus above rule cannot be enforced.
>>
>> Split the syscon.yaml binding into:
>> 1. Common syscon properties, used potentially by many bindings.
>> 2. Simple syscon devices (NO simple-mfd!).
>>
>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

..


>>  
>>  description: |
>>    System controller node represents a register region containing a set
>> @@ -19,122 +19,99 @@ description: |
>>  maintainers:
>>    - Lee Jones <lee@kernel.org>
>>  
>> -select:
>> -  properties:
>> -    compatible:
>> -      contains:
>> -        enum:
>> -          - syscon
>> -
>> -  required:
>> -    - compatible
>> -
> 
> Removing this is only going to work with v2024.04. The only way it 
> works for older versions is listing all the compatibles here. That's a 
> bit new for us to require it.

I'll keep it, in such case. Anyway its removal is not really related to
main concept of this patch.

Best regards,
Krzysztof