linux-kernel - [PATCH v8 4/8] devicetree: backlight: Add new SKY81452 backlight binding

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Message-Id: <1416898986-24530-5-git-send-email-jack.yoo@skyworksinc.com>
Date:	Tue, 25 Nov 2014 16:03:02 +0900
From:	gyungoh@...il.com
To:	sameo@...ux.intel.com, lee.jones@...aro.org, jg1.han@...sung.com,
	cooloney@...il.com, broonie@...nel.org, lgirdwood@...il.com
Cc:	jack.yoo@...worksinc.com, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, grant.likely@...aro.org,
	robh+dt@...nel.org, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	pawel.moll@....com, heiko@...ech.de, jason@...edaemon.net,
	shawn.guo@...escale.com, treding@...dia.com,
	florian.vaussard@...l.ch, trivial@...nel.org, linux@...ck-us.net,
	andrew@...n.ch, jic23@...nel.org
Subject: [PATCH v8 4/8] devicetree: backlight: Add new SKY81452 backlight binding

From: Gyungoh Yoo <jack.yoo@...worksinc.com>

Signed-off-by: Gyungoh Yoo <jack.yoo@...worksinc.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 v7:
Nothing

Changes v6:
Nothing

Changes v5:
Nothing

Changes v4:
Nothing

Changes v3:
Nothing

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.
+
+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>;
+	};
-- 
1.9.1

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