From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alexandre Courbot <acourbot@nvidia.com>
Date: Fri, 27 Jul 2012 12:05:50 +0000
Subject: [RFC][PATCH v3 3/3] tegra: add pwm backlight device tree nodes
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List-Id: <linux-fbdev.vger.kernel.org>
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To: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>, Thierry Reding <thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>, Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>, Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>, Rob Herring <rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org>, Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>, Mark Brown <broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>, Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-fbdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, Alexandre Courbot <acourbot-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---
 arch/arm/boot/dts/tegra20-ventana.dts | 53 +++++++++++++++++++++++++++++++++++
 arch/arm/boot/dts/tegra20.dtsi        |  2 +-
 2 files changed, 54 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/tegra20-ventana.dts b/arch/arm/boot/dts/tegra20-ventana.dts
index be90544..6acdb6d 100644
--- a/arch/arm/boot/dts/tegra20-ventana.dts
+++ b/arch/arm/boot/dts/tegra20-ventana.dts
@@ -317,6 +317,59 @@
 		bus-width = <8>;
 	};
 
+	backlight {
+		compatible = "pwm-backlight";
+		brightness-levels = <0 16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 255>;
+		default-brightness-level = <12>;
+
+		pwms = <&pwm 2 5000000>;
+		pwm-names = "backlight";
+		power-supply = <&backlight_reg>;
+		enable-gpio = <&gpio 28 0>;
+
+		power-on-sequence {
+			regulator@0 {
+				id = "power";
+				enable;
+				post-delay = <10>;
+			};
+			pwm@1 {
+				id = "backlight";
+				enable;
+			};
+			gpio@2 {
+				id = "enable-gpio";
+				enable;
+			};
+		};
+		power-off-sequence {
+			gpio@0 {
+				id = "enable-gpio";
+				disable;
+			};
+			pwm@1 {
+				id = "backlight";
+				disable;
+			};
+			regulator@2 {
+				id = "power";
+				disable;
+				pre-delay = <10>;
+			};
+		};
+	};
+
+	backlight_reg: fixedregulator@176 {
+		compatible = "regulator-fixed";
+		regulator-name = "backlight_regulator";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		gpio = <&gpio 176 0>;
+		startup-delay-us = <0>;
+		enable-active-high;
+		regulator-boot-off;
+	};
+
 	sound {
 		compatible = "nvidia,tegra-audio-wm8903-ventana",
 			     "nvidia,tegra-audio-wm8903";
diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
index 405d167..67a6cd9 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/arch/arm/boot/dts/tegra20.dtsi
@@ -123,7 +123,7 @@
 		status = "disabled";
 	};
 
-	pwm {
+	pwm: pwm {
 		compatible = "nvidia,tegra20-pwm";
 		reg = <0x7000a000 0x100>;
 		#pwm-cells = <2>;
-- 
1.7.11.3