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

[Maxime Coquelin]

2015-10-26 14:41 GMT+01:00 Linus Walleij <linus.walleij at linaro.org>:
> On Sat, Oct 17, 2015 at 7:23 PM, Maxime Coquelin
> <mcoquelin.stm32 at gmail.com> wrote:
>
>> Signed-off-by: Maxime Coquelin <mcoquelin.stm32 at gmail.com>
> (...)
>> +       leds {
>> +               compatible = "gpio-leds";
>> +               red {
>> +                       gpios = <&gpiog 14 0>;
>> +               };
>> +               green {
>> +                       gpios = <&gpiog 13 0>;
>> +               };
>
> I suggest you add labels to these LEDs.
>
> label = "red-LED"
> label = "green-LED"
>
> This make things so much easier in sysfs.

I'm not sure to understand where it makes things easier in sysfs.
This is the sysfs path for the red led:
/sys/class/leds/red/

Indeed, if label is not present, it gets the node name.

>
> Usually people also want to add a default linux,trigger to these,
> like linux,default-trigger = "heartbeat"; but whatever you prefer.

Makes sense, I will add default trigger in next version.

> Acked-by: Linus Walleij <linus.walleij at linaro.org>

Thanks!
Maxime