linux-kernel - Re: [PATCH 2/2] dt-bindings: PCI: loongson: Add skip-scan property for child node

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Date:   Fri, 4 Nov 2022 14:42:12 +0800
From:   Liu Peibao <liupeibao@...ngson.cn>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Jiaxun Yang <jiaxun.yang@...goat.com>
Cc:     chenhuacai@...ngson.cn, lvjianmin@...ngson.cn,
        zhuyinbo@...ngson.cn, linux-pci@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] dt-bindings: PCI: loongson: Add skip-scan property
 for child node

On 11/4/22 5:53 AM, Krzysztof Kozlowski wrote:
> On 03/11/2022 05:00, Liu Peibao wrote:
>> Add the newly added "skip-scan" property for child node.
> 
> This we can see from the patch log. You need to say answer here to "Why".
> 

I will take care of this when I submit new patches.

>>
>> Signed-off-by: Liu Peibao <liupeibao@...ngson.cn>
>> ---
>>  Documentation/devicetree/bindings/pci/loongson.yaml | 7 +++++++
>>  1 file changed, 7 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/pci/loongson.yaml b/Documentation/devicetree/bindings/pci/loongson.yaml
>> index a8324a9bd002..5c2fe9bf2c78 100644
>> --- a/Documentation/devicetree/bindings/pci/loongson.yaml
>> +++ b/Documentation/devicetree/bindings/pci/loongson.yaml
>> @@ -32,6 +32,13 @@ properties:
>>      minItems: 1
>>      maxItems: 3
>>  
>> +  child-node:
> 
> What is "child-node"?
> 
>> +    type: object
>> +    properties:
>> +      skip-scan:
>> +        description: avoid scanning this device.
>> +        type: boolean
> 
> Why? Isn't status for that?
> 
> You also need additionalProperties: false/true, depending on what this
> child-node is...
> 
> ...and add the case illustrating it in the example.
> 
> 

I think I did add some vague description.

Since the opinion of Jiaxun in the [PATCH 1/2] is really more elegant
than what I did. I decide follow this opinion and as the `status = "disabled"`
property is existing, I will don't modify this yaml.

Thanks for your detailed review!

BR,
Peibao