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

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Date:   Thu, 3 Nov 2022 17:53:35 -0400
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Liu Peibao <liupeibao@...ngson.cn>,
        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 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".

> 
> 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.


Best regards,
Krzysztof