linux-kernel - Re: [PATCH v2 8/9] ARM: dts: Add leds support to STM32F429 Discovery board

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Date:	Wed, 28 Oct 2015 08:09:23 +0000
From:	Daniel Thompson <daniel.thompson@...aro.org>
To:	Andreas Färber <afaerber@...e.de>,
	Linus Walleij <linus.walleij@...aro.org>
Cc:	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Mark Rutland <mark.rutland@....com>,
	Rob Herring <robh+dt@...nel.org>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	Arnd Bergmann <arnd@...db.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Bruno Herrera <bruherrera@...il.com>
Subject: Re: [PATCH v2 8/9] ARM: dts: Add leds support to STM32F429 Discovery
 board

On 27/10/15 21:52, Andreas Färber wrote:
> Am 27.10.2015 um 22:46 schrieb Linus Walleij:
>> Heartbeat is awesome.
>
> Yes, it's awesome for testing, but not for a .dts file that ends up in a
> distro (not the case here, of course) and keeps blinking on the desk.
>
> If someone wants LEDs to blink, they can set that via sysfs or by
> modifying their .dts locally.
>
> sunxi chose to keep LEDs off my default. For qcom we had a similar
> discussion some weeks ago. I don't regularly read Linux patches, so feel
> free to skim the archives yourself.

Among the existing DTS files there is pretty significant use of 
heartbeat although its not absolute.

There are 119 files that set a default-trigger, of these 91 (~75%) 
include a line to configure a heartbeat.

Personally I'd be very happy with heartbeat by default on STM32... I've 
seldom worked on a board without a default-enabled heartbeat so they 
make me feel comfortable. ;-)


Daniel.
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