linux-kernel - Re: [PATCH 1/2] dt: bindings: lm3692x: Document new properties

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Message-ID: <20191221191515.GF32732@amd>
Date:   Sat, 21 Dec 2019 20:15:15 +0100
From:   Pavel Machek <pavel@....cz>
To:     Guido Günther <agx@...xcpu.org>
Cc:     Jacek Anaszewski <jacek.anaszewski@...il.com>,
        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: [PATCH 1/2] dt: bindings: lm3692x: Document new properties

On Mon 2019-12-16 13:28:05, Guido Günther wrote:
> We allow configuration of brightness mode and over voltage
> protection.
> 
> Signed-off-by: Guido Günther <agx@...xcpu.org>
> +++ b/Documentation/devicetree/bindings/leds/leds-lm3692x.txt
> @@ -18,6 +18,10 @@ Required properties:
>  Optional properties:
>  	- enable-gpios : gpio pin to enable/disable the device.
>  	- vled-supply : LED supply
> +	- ti,brightness-mapping-exponential: Whether to use exponential
> +	    brightness mapping
> +	- ti,overvoltage-volts: Overvoltage protection in Volts, can
> +	    be 0 (unprotected), 21, 25 or 29V
>  

We usually use microvolts in various device tree properties...

Exponential mapping s not really property of the hardware, is it? Does
it belong here or somewhere in the backlight binding?

Best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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