linux-kernel - Re: [PATCH v5 1/2] dt-bindings: leds: Add bindings for lm3697 driver

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Date:   Fri, 24 Aug 2018 11:55:15 +0200
From:   Pavel Machek <pavel@....cz>
To:     Dan Murphy <dmurphy@...com>
Cc:     robh+dt@...nel.org, jacek.anaszewski@...il.com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-leds@...r.kernel.org
Subject: Re: [PATCH v5 1/2] dt-bindings: leds: Add bindings for lm3697 driver

On Fri 2018-08-17 10:15:27, Dan Murphy wrote:
> Add the device tree bindings for the lm3697
> LED driver for backlighting and display.
> 
> Signed-off-by: Dan Murphy <dmurphy@...com>

Acked-by: Pavel Machek <pavel@....cz>

Some nits are below.

> +The LM3697 11-bit LED driver provides high-
> +performance backlight dimming for 1, 2, or 3 series
> +LED strings while delivering up to 90% efficiency.

LED core is 8-bit only... so full dynamic range can not be currently
used in linux -- right? Is there any plan to change/fix that?

> +This device is suitable for Display and Keypad Lighting

"display and keypad lighting."

> +Optional properties:
> +	- enable-gpios : gpio pin to enable/disable the device.

Remove "." at end of sentence, for consistency. "GPIO"?

> +All HVLED strings controlled by control bank A

":"?

> +led-controller@36 {
> +	compatible = "ti,lm3967";
> +	reg = <0x36>;
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +
> +	enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
> +	vled-supply = <&vbatt>;
> +
> +	led@0 {
> +		reg = <0>;
> +		led-sources = <1 1 1>;
> +		label = "white:backlight_cluster";
> +		linux,default-trigger = "backlight";
> +	};
> +}
> +
> +For more product information please see the link below:
> +http://www.ti.com/lit/ds/symlink/lm3697.pdf

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

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