linux-kernel - Re: [RFC PATCH 0/5] leds: Add DT node finding and parsing to core

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Date:   Mon, 18 Nov 2019 10:21:44 +0100
From:   "Enrico Weigelt, metux IT consult" <info@...ux.net>
To:     Matti Vaittinen <matti.vaittinen@...rohmeurope.com>,
        mazziesaccount@...il.com
Cc:     Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Pavel Machek <pavel@....cz>, Dan Murphy <dmurphy@...com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 0/5] leds: Add DT node finding and parsing to core

Hi,


> The thing is that
> this approach requires the LED controller binding to dictate allowed
> LED node names - which may or may not be doable. I need your help to
> evaluate this and suggest better options :)

even though I like the idea of convention-over-code, but if that's
changing allowed LED names that would risk breaking things, eg:

a) existing DT's (in the field) become incompatible with newer
   kernel versions
b) existing userlands that rely on speicific LED names become
   incomatible with newer kernel versions.



--mtx

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Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@...ux.net -- +49-151-27565287