From: Alexandre Courbot <acourbot@nvidia.com>
To: Stephen Warren <swarren@nvidia.com>,
Thierry Reding <thierry.reding@avionic-design.de>,
Simon Glass <sjg@chromium.org>,
Grant Likely <grant.likely@secretlab.ca>,
Rob Herring <rob.herring@calxeda.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Mark Brown <broonie@opensource.wolfsonmicro.com>,
Arnd Bergmann <arnd@arndb.de>
Cc: <linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-fbdev@vger.kernel.org>,
<devicetree-discuss@lists.ozlabs.org>,
Alexandre Courbot <acourbot@nvidia.com>
Subject: [RFC][PATCH v3 3/3] tegra: add pwm backlight device tree nodes
Date: Fri, 27 Jul 2012 21:05:50 +0900 [thread overview]
Message-ID: <1343390750-3642-4-git-send-email-acourbot@nvidia.com> (raw)
In-Reply-To: <1343390750-3642-1-git-send-email-acourbot@nvidia.com>
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
prev parent reply other threads:[~2012-07-27 12:06 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-27 12:05 [RFC][PATCH v3 0/3] Power sequences with PWM and DT support Alexandre Courbot
2012-07-27 12:05 ` [RFC][PATCH v3 1/3] runtime interpreted power sequences Alexandre Courbot
2012-07-27 18:19 ` Greg Kroah-Hartman
2012-07-30 1:51 ` Alex Courbot
2012-07-30 2:40 ` Gethering power management/policy hw drivers under drivers/power/? (Re: [RFC][PATCH v3 1/3] runtime interpreted power sequences) Anton Vorontsov
2012-07-30 20:59 ` Rafael J. Wysocki
2012-08-01 0:51 ` Anton Vorontsov
2012-08-06 8:45 ` Pihet-XID, Jean
2012-07-27 18:20 ` [RFC][PATCH v3 1/3] runtime interpreted power sequences Greg Kroah-Hartman
2012-07-30 11:00 ` Simon Glass
2012-07-31 8:37 ` Alex Courbot
2012-07-31 9:13 ` Thierry Reding
2012-07-31 10:11 ` Alex Courbot
2012-07-31 10:46 ` Thierry Reding
2012-07-31 14:23 ` Mark Brown
2012-07-30 11:33 ` Thierry Reding
2012-07-31 9:51 ` Alex Courbot
2012-07-31 10:19 ` Thierry Reding
2012-08-01 2:50 ` Alex Courbot
2012-08-01 7:17 ` Thierry Reding
2012-07-31 14:11 ` Mark Brown
2012-07-30 15:44 ` Rob Herring
2012-07-30 15:47 ` Mark Brown
2012-07-31 9:16 ` Thierry Reding
2012-07-30 22:26 ` Stephen Warren
2012-07-31 10:15 ` Alex Courbot
2012-07-30 22:45 ` Stephen Warren
2012-07-31 10:32 ` Alex Courbot
2012-07-31 10:56 ` Thierry Reding
2012-07-31 12:22 ` Mitch Bradley
2012-07-31 12:38 ` Thierry Reding
2012-07-31 12:55 ` Mitch Bradley
2012-08-01 1:47 ` Alex Courbot
2012-08-01 2:15 ` Mitch Bradley
2012-08-01 1:42 ` Alex Courbot
2012-07-31 14:13 ` Mark Brown
2012-07-31 14:22 ` Thierry Reding
2012-07-31 14:26 ` Mark Brown
2012-07-31 14:32 ` Thierry Reding
2012-07-31 15:39 ` Mark Brown
2012-07-31 16:19 ` Greg Kroah-Hartman
2012-07-31 16:22 ` Mark Brown
2012-07-31 16:42 ` Greg Kroah-Hartman
2012-07-31 16:50 ` Mark Brown
2012-08-01 7:41 ` Thierry Reding
2012-08-01 13:26 ` Mark Brown
2012-08-01 13:38 ` Thierry Reding
2012-08-01 13:55 ` Mark Brown
2012-08-01 14:01 ` Thierry Reding
2012-07-31 16:34 ` Stephen Warren
2012-08-02 8:00 ` Alex Courbot
2012-08-02 8:21 ` Thierry Reding
2012-08-02 8:27 ` Alex Courbot
2012-08-02 8:45 ` Thierry Reding
2012-08-02 9:20 ` Alex Courbot
2012-08-02 18:11 ` Mark Brown
2012-08-03 1:15 ` Alex Courbot
2012-08-04 14:12 ` Mark Brown
2012-08-06 2:27 ` Alex Courbot
2012-08-06 16:16 ` Stephen Warren
2012-08-07 5:10 ` Alex Courbot
2012-07-27 12:05 ` [RFC][PATCH v3 2/3] pwm_backlight: use " Alexandre Courbot
2012-07-27 12:05 ` Alexandre Courbot [this message]
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