linux-kernel - Re: [PATCH 1/2] ARM: dts: omap3-n900: Fix lp5523 for multi color

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Date:   Thu, 16 Dec 2021 12:50:14 +0100
From:   Merlijn Wajer <merlijn@...zup.org>
To:     Pavel Machek <pavel@....cz>
Cc:     Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com>,
        Dev Null <devnull@...s.xyz>, Tony Lindgren <tony@...mide.com>,
        Sebastian Reichel <sre@...nel.org>,
        "Sicelo A. Mhlongo" <absicsz@...il.com>,
        Benoît Cousson <bcousson@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Dan Murphy <dmurphy@...com>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-omap@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] ARM: dts: omap3-n900: Fix lp5523 for multi color

Hi Pavel,

On 15/12/2021 21:31, Pavel Machek wrote:
> Hi!
> 
>> From: "Sicelo A. Mhlongo" <absicsz@...il.com>
>>
>> Since the LED multicolor framework support was added in commit
>> 92a81562e695 ("leds: lp55xx: Add multicolor framework support to lp55xx")
>> LEDs on this platform stopped working.
> 
> Does this change names is /sys/class/leds?

I booted my 5.15 with this series (and some other patches) added and
these are the led names:

> root@...uan-n900:~# uname -a
> Linux devuan-n900 5.15.2-00596-g94bfc7de5522-dirty #58 SMP PREEMPT Thu Dec 16 11:53:53 CET 2021 armv7l GNU/Linux
> root@...uan-n900:~# ls /sys/class/leds
> debug::sleep  lp5523:g    lp5523:kb2  lp5523:kb4  lp5523:kb6
> lp5523:b      lp5523:kb1  lp5523:kb3  lp5523:kb5  lp5523:r

On 5.1 (my previous 'stable') kernel, these are the led names:

> root@...uan-n900:~# uname -a
> Linux devuan-n900 5.1.21 #1 Mon Jul 19 16:32:44 UTC 2021 armv7l GNU/Linux
> root@...uan-n900:~# ls /sys/class/leds
> debug::sleep  lp5523:g    lp5523:kb2  lp5523:kb4  lp5523:kb6
> lp5523:b      lp5523:kb1  lp5523:kb3  lp5523:kb5  lp5523:r

So I don't think the names are changed.

Regards,
Merlijn