linux-kernel - Re: [PATCH v3 1/2] leds: ncp5623: Add device tree binding documentation

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Message-ID: <a1bc95d5-a460-b4c7-5392-93fda0cc4f7a@gmail.com>
Date:   Wed, 28 Sep 2016 12:04:34 +0200
From:   Florian Vaussard <florian.vaussard@...il.com>
To:     Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Pavel Machek <pavel@....cz>
Cc:     devicetree@...r.kernel.org, Richard Purdie <rpurdie@...ys.net>,
        Jacek Anaszewski <j.anaszewski@...sung.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org,
        Florian Vaussard <florian.vaussard@...g-vd.ch>
Subject: Re: [PATCH v3 1/2] leds: ncp5623: Add device tree binding
 documentation

Hello Jacek,

Le 24. 09. 16 à 21:06, Jacek Anaszewski a écrit :
> On 09/24/2016 01:58 PM, Pavel Machek wrote:
>> Hi!
>>
>>> +Example
>>> +=======
>>> +
>>> +led1: ncp5623@38 {
>>> +    #address-cells = <1>;
>>> +    #size-cells = <0>;
>>> +    compatible = "onnn,ncp5623";
>>> +    reg = <0x38>;
>>> +    onnn,led-iref-microamp = <10>;
>>> +
>>> +    led1r@0 {
>>> +        label = "ncp:power:red";
>>> +        linux,default-trigger = "default-on";
>> ...
>>> +    led1b@1 {
>>> +        label = "ncp:power:blue";
>>> +        reg = <1>;
>>
>> Actually... the three LEDs are packaged such as this is one colorful
>> light to the user, right? Some day we'll need to group them, so that
>> kernel can automatically tell this is one led, and probably add extra
>> attributes, such as values that produce white light.
> 
> We could try out the trigger approach we discussed few months ago.
> Unfortunately I currently don't have enough time to propose the
> implementation. Probably this work could be done on the occasion of
> addition of RGB LED class driver like this, if the author had free
> bandwidth for that.
> 

Unfortunately my bandwidth is pretty well used at the moment :)

Best regards,
Florian