linux-kernel - Re: [PATCH 4/5] devicetree: leds: Introduce "panic-blink" optional property

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Message-ID: <CAL_JsqLF-cMtGERnZ0wO_GUkhsf23LQhOm6PwwKAa5evSkOHDg@mail.gmail.com>
Date:	Wed, 6 Apr 2016 10:12:09 -0500
From:	Rob Herring <robh@...nel.org>
To:	Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
Cc:	Linux LED Subsystem <linux-leds@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Richard Purdie <rpurdie@...ys.net>,
	Jacek Anaszewski <j.anaszewski@...sung.com>
Subject: Re: [PATCH 4/5] devicetree: leds: Introduce "panic-blink" optional property

On Mon, Apr 4, 2016 at 3:22 PM, Ezequiel Garcia
<ezequiel@...guardiasur.com.ar> wrote:
> It's desirable to specify which LEDs are to be blinked on a kernel
> panic. Therefore, introduce a devicetree boolean property to mark
> which LEDs should be treated this way.
>
> Signed-off-by: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
> ---
>  Documentation/devicetree/bindings/leds/common.txt | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt
> index 68419843e32f..dd409df9203a 100644
> --- a/Documentation/devicetree/bindings/leds/common.txt
> +++ b/Documentation/devicetree/bindings/leds/common.txt
> @@ -37,6 +37,8 @@ Optional properties for child nodes:
>                       property is mandatory for the LEDs in the non-flash modes
>                       (e.g. torch or indicator).
>
> +- panic-blink : Mark this LED to be used by the panic LED trigger.
> +

We already have a way to specify LED triggers. Why can't that be used?

Rob