linux-kernel - Re: [PATCH 1/2] dt-bindings: cpufreq: Add big CPU supply

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Message-ID: <4aa2c006-3210-4667-b05c-3c7b8e8e61be@linaro.org>
Date: Thu, 4 Jan 2024 09:03:53 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Nícolas F. R. A. Prado <nfraprado@...labora.com>,
 Viresh Kumar <viresh.kumar@...aro.org>,
 "Rafael J . Wysocki" <rafael@...nel.org>
Cc: kernel@...labora.com,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
 Conor Dooley <conor+dt@...nel.org>, Hector Yuan <hector.yuan@...iatek.com>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Matthias Brugger <matthias.bgg@...il.com>, Rob Herring <robh+dt@...nel.org>,
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
 linux-pm@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: cpufreq: Add big CPU supply

On 29/12/2023 22:28, Nícolas F. R. A. Prado wrote:
> The performance-controller hardware block on MediaTek SoCs is
> responsible for controlling the frequency of the CPUs. As such, it needs
> any CPU regulator to have been configured prior to initializing. Add a
> phandle in the binding so this dependency can be described.
> 
> Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
> ---
> 
>  .../devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml        | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml
> index d0aecde2b89b..d75b01d04998 100644
> --- a/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml
> +++ b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml
> @@ -33,6 +33,8 @@ properties:
>        performance domains.
>      const: 1
>  
> +  big-cpus-supply: true

Why big? Neither little nor medium need power? Why you do not need to
provide all supplies?

About the naming, use something matching the devices, e.g. from their
datasheet/manual.

Best regards,
Krzysztof