linux-kernel - Re: [PATCH] dt-bindings: mfd: aspeed,ast2x00-scu: allow #size-cells range

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Message-ID: <b38321e8-d243-460a-a9d6-6770a41627cd@kernel.org>
Date: Mon, 20 Oct 2025 08:17:35 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Ryan Chen <ryan_chen@...eedtech.com>, Lee Jones <lee@...nel.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Joel Stanley <joel@....id.au>,
 Andrew Jeffery <andrew@...econstruct.com.au>, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-aspeed@...ts.ozlabs.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: mfd: aspeed,ast2x00-scu: allow #size-cells
 range

On 20/10/2025 04:07, Ryan Chen wrote:
> The #size-cells property in the Aspeed SCU binding is currently
> fixed to a constant value of 1. However, newer SoCs (ex. AST2700)
> may require two size cells to describe certain subregions or

"may"? So there is no issue yet?

> subdevices.
> 
> This patch updates the schema to allow #size-cells values in
> the range of 1 to 2. This makes the binding more flexible
> while maintaining compatibility with existing platforms.
> It also resolves dt-binding validation warnings reported
> by `make dt_binding_check`.

Bu there is a warning? Which warning? On which file?

> 
> Signed-off-by: Ryan Chen <ryan_chen@...eedtech.com>
> ---
>  Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml b/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml
> index 5eccd10d95ce..1d3f686577db 100644
> --- a/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml
> +++ b/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml
> @@ -38,7 +38,8 @@ properties:
>      maximum: 2
>  
>    '#size-cells':
> -    const: 1
> +    minimum: 1
> +    maximum: 2

That's just enum.

>  
>    '#clock-cells':
>      const: 1


Best regards,
Krzysztof