linux-kernel - Re: [PATCH v10 4/6] devicetree: backlight: Add new SKY81452 backlight binding

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Message-ID: <20141218083036.GR13885@x1>
Date:	Thu, 18 Dec 2014 08:30:36 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	gyungoh@...il.com
Cc:	sameo@...ux.intel.com, grant.likely@...aro.org, robh+dt@...nel.org,
	jg1.han@...sung.com, cooloney@...il.com, pawel.moll@....com,
	mark.rutland@....com, ijc+devicetree@...lion.org.uk,
	galak@...eaurora.org, trivial@...nel.org,
	akpm@...ux-foundation.org, jic23@...nel.org,
	thomas.petazzoni@...e-electrons.com, ktsai@...ellamicro.com,
	hs@...x.de, stwiss.opensource@...semi.com, matti.vaittinen@....com,
	broonie@...nel.org, jason@...edaemon.net, heiko@...ech.de,
	shawn.guo@...escale.com, florian.vaussard@...l.ch, andrew@...n.ch,
	antonynpavlov@...il.com, hytszk@...il.com, plagnioj@...osoft.com,
	tomi.valkeinen@...com, jack.yoo@...worksinc.com,
	linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: Re: [PATCH v10 4/6] devicetree: backlight: Add new SKY81452
 backlight binding

DT Ack please.

> From: Gyungoh Yoo <jack.yoo@...worksinc.com>
> 
> Signed-off-by: Gyungoh Yoo <jack.yoo@...worksinc.com>
> Acked-by: Bryan Wu <cooloney@...il.com>
> ---

[...]

> Changes v8:
> Renamed property names for backlight with vendor prefix
> Modified gpio-enable property to generic property for GPIO
> Made up the example for backlight DT

[...]

> Changes v2:
> Added reg attribute for I2C slave address
> 
>  .../video/backlight/sky81452-backlight.txt         | 29 ++++++++++++++++++++++
>  1 file changed, 29 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/video/backlight/sky81452-backlight.txt
> 
> diff --git a/Documentation/devicetree/bindings/video/backlight/sky81452-backlight.txt b/Documentation/devicetree/bindings/video/backlight/sky81452-backlight.txt
> new file mode 100644
> index 0000000..8daebf5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/video/backlight/sky81452-backlight.txt
> @@ -0,0 +1,29 @@
> +SKY81452-backlight bindings
> +
> +Required properties:
> +- compatible		: Must be "skyworks,sky81452-backlight"
> +
> +Optional properties:
> +- name			: Name of backlight device. Default is 'lcd-backlight'.
> +- gpios			: GPIO to use to EN pin.
> +			See Documentation/devicetree/bindings/gpio/gpio.txt
> +- skyworks,en-channels	: Enable mask for current sink channel 1 to 6.
> +- skyworks,ignore-pwm	: Ignore both PWM input
> +- skyworks,dpwm-mode	: Enable DPWM dimming mode, otherwise Analog dimming.
> +- skyworks,phase-shift	: Enable phase shift mode
> +- skyworks,ovp-level	: Over-voltage protection level.
> +			Should be between 14 or 28V.
> +- skyworks,short-detection-threshold	: It should be one of 4, 5, 6 and 7V.
> +- skyworks,current-limit	: It should be 2300mA or 2750mA.

These need a DT Ack (if they are still alive).

> +Example:
> +
> +	backlight {
> +		compatible = "skyworks,sky81452-backlight";
> +		name = "pwm-backlight";
> +		skyworks,en-channels = <0x3f>;
> +		skyworks,ignore-pwm;
> +		skyworks,phase-shift;
> +		skyworks,ovp-level = <20>;
> +		skyworks,current-limit = <2300>;
> +	};

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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