[RFC][PATCH V2 3/3] tegra: add pwm backlight device tree nodes
From: Alexandre Courbot <acourbot@nvidia.com>
Date: 2012-07-09 06:07:34
Also in:
linux-fbdev, linux-tegra, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> --- arch/arm/boot/dts/tegra20-ventana.dts | 31 +++++++++++++++++++++++++++++++ arch/arm/boot/dts/tegra20.dtsi | 2 +- 2 files changed, 32 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/tegra20-ventana.dts b/arch/arm/boot/dts/tegra20-ventana.dts
index be90544..c67d9e1 100644
--- a/arch/arm/boot/dts/tegra20-ventana.dts
+++ b/arch/arm/boot/dts/tegra20-ventana.dts@@ -317,6 +317,37 @@ 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-gpios = <&gpio 28 0>; + + power-on-sequence = "REGULATOR", "power", <1>, + "DELAY", <10>, + "PWM", "backlight", <1>, + "GPIO", "enable", <1>; + power-off-sequence = "GPIO", "enable", <0>, + "PWM", "backlight", <0>, + "DELAY", <10>, + "REGULATOR", "power", <0>; + }; + + 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>;
--
1.7.11.1