linux-kernel - Re: [PATCH v2 03/11] dt-bindings: leds: Document "activity" trigger

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Message-ID: <YVIhEJCJ9lr3ZKzM@robh.at.kernel.org>
Date:   Mon, 27 Sep 2021 14:52:48 -0500
From:   Rob Herring <robh@...nel.org>
To:     Daniel Palmer <daniel@...f.com>
Cc:     devicetree@...r.kernel.org, linux-gpio@...r.kernel.org,
        linux-leds@...r.kernel.org, linus.walleij@...aro.org,
        bgolaszewski@...libre.com, pavel@....cz,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 03/11] dt-bindings: leds: Document "activity" trigger

On Thu, Sep 23, 2021 at 03:54:52PM +0900, Daniel Palmer wrote:
> The "activity" trigger can be used as the default but it's currently
> undocumented so validating a devicetree that uses it causes a warning.

It is preferred to use 'function' and LED_FUNCTION_CPU. Is there some 
reason that can't be used?

> 
> Signed-off-by: Daniel Palmer <daniel@...f.com>
> ---
>  Documentation/devicetree/bindings/leds/common.yaml | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml
> index 697102707703..8160a5073728 100644
> --- a/Documentation/devicetree/bindings/leds/common.yaml
> +++ b/Documentation/devicetree/bindings/leds/common.yaml
> @@ -80,6 +80,8 @@ properties:
>      $ref: /schemas/types.yaml#/definitions/string
>  
>      enum:
> +        # LED will flashing will represent current CPU usage
> +      - activity
>          # LED will act as a back-light, controlled by the framebuffer system
>        - backlight
>          # LED will turn on (but for leds-gpio see "default-state" property in
> -- 
> 2.33.0
> 
>