From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexandre Courbot Date: Mon, 09 Jul 2012 06:08:25 +0000 Subject: [RFC][PATCH V2 3/3] tegra: add pwm backlight device tree nodes Message-Id: <1341814105-20690-4-git-send-email-acourbot@nvidia.com> List-Id: References: <1341814105-20690-1-git-send-email-acourbot@nvidia.com> In-Reply-To: <1341814105-20690-1-git-send-email-acourbot@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Thierry Reding Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fbdev@vger.kernel.org, devicetree-discuss@lists.ozlabs.org, Alexandre Courbot Signed-off-by: Alexandre Courbot --- 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