linux-kernel - Re: [PATCH v2 2/2] leds: Add control of the voltage/current regulator to the LED core

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Message-ID: <20190716105032.thpcttko5do3u56n@holly.lan>
Date:   Tue, 16 Jul 2019 11:50:32 +0100
From:   Daniel Thompson <daniel.thompson@...aro.org>
To:     Jean-Jacques Hiblot <jjhiblot@...com>
Cc:     jacek.anaszewski@...il.com, pavel@....cz, robh+dt@...nel.org,
        mark.rutland@....com, dmurphy@...com, linux-leds@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v2 2/2] leds: Add control of the voltage/current
 regulator to the LED core

On Mon, Jul 15, 2019 at 05:56:57PM +0200, Jean-Jacques Hiblot wrote:
> A LED is usually powered by a voltage/current regulator. Let the LED core

This is almost certainly nitpicking but since there's enough other
review comments that you will have to respin anyway ;-)

Is an LED really "usually powered by a voltage/current regulator"? Some
LEDs have a software controlled power supply but I'm not sure it is
the usual case.

Likewise its a little confusing to be talking about LEDs with an
external current regulator since, although that is possible, it is also
one the main features provided by LED driver chips.

Daniel.