linux-kernel - Re: [PATCH 11/18] dt-bindings: pwm: add power-domains property

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Date:   Mon, 23 Oct 2023 18:38:30 +0100
From:   Conor Dooley <conor@...nel.org>
To:     Alexandre Mergnat <amergnat@...libre.com>
Cc:     Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Jitao Shi <jitao.shi@...iatek.com>,
        Xinlei Lee <xinlei.lee@...iatek.com>,
        CK Hu <ck.hu@...iatek.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, dri-devel@...ts.freedesktop.org,
        linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-pwm@...r.kernel.org
Subject: Re: [PATCH 11/18] dt-bindings: pwm: add power-domains property

Yo,

On Mon, Oct 23, 2023 at 04:40:11PM +0200, Alexandre Mergnat wrote:
> According to the Mediatek datasheet, the display PWM block has a power
> domain.

Datasheet for which soc? The mt8173? Is it valid for all devices in this
binding?

Cheers,
Conor.

> 
> Signed-off-by: Alexandre Mergnat <amergnat@...libre.com>
> ---
>  Documentation/devicetree/bindings/pwm/mediatek,pwm-disp.yaml | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pwm/mediatek,pwm-disp.yaml b/Documentation/devicetree/bindings/pwm/mediatek,pwm-disp.yaml
> index 153e146df7d4..efe0cacf55b7 100644
> --- a/Documentation/devicetree/bindings/pwm/mediatek,pwm-disp.yaml
> +++ b/Documentation/devicetree/bindings/pwm/mediatek,pwm-disp.yaml
> @@ -53,6 +53,12 @@ properties:
>        - const: main
>        - const: mm
>  
> +  power-domains:
> +    maxItems: 1
> +    description: A phandle and PM domain specifier as defined by bindings of
> +      the power controller specified by phandle. See
> +      Documentation/devicetree/bindings/power/power-domain.yaml for details.
> +
>  required:
>    - compatible
>    - reg
> @@ -67,6 +73,7 @@ examples:
>      #include <dt-bindings/interrupt-controller/arm-gic.h>
>      #include <dt-bindings/clock/mt8173-clk.h>
>      #include <dt-bindings/interrupt-controller/irq.h>
> +    #include <dt-bindings/power/mt8173-power.h>
>  
>      pwm0: pwm@...1e000 {
>          compatible = "mediatek,mt8173-disp-pwm";
> @@ -75,4 +82,5 @@ examples:
>          clocks = <&mmsys CLK_MM_DISP_PWM026M>,
>                   <&mmsys CLK_MM_DISP_PWM0MM>;
>          clock-names = "main", "mm";
> +        power-domains = <&spm MT8173_POWER_DOMAIN_MM>;
>      };
> 
> -- 
> 2.25.1
> 

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