diff mbox

[v6,4/4] tegra: ventana: add pwm backlight DT nodes

Message ID 1347443867-18868-5-git-send-email-acourbot@nvidia.com (mailing list archive)
State New, archived
Headers show

Commit Message

Alexandre Courbot Sept. 12, 2012, 9:57 a.m. UTC 
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---
 arch/arm/boot/dts/tegra20-ventana.dts | 59 ++++++++++++++++++++++++++++++++++-
 1 file changed, 58 insertions(+), 1 deletion(-)

Comments

Stephen Warren Sept. 12, 2012, 9:23 p.m. UTC | #1 
On 09/12/2012 03:57 AM, Alexandre Courbot wrote:
> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>

Both patches 3 and 4 in the series,
Acked-by: Stephen Warren <swarren@wwwdotorg.org>

I will take those patches into the Tegra tree when (hopefully rather
than if) patches 1 and 2 are accepted.
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diff mbox

Patch

diff --git a/arch/arm/boot/dts/tegra20-ventana.dts b/arch/arm/boot/dts/tegra20-ventana.dts
index 3e5952f..4ca3ceb 100644
--- a/arch/arm/boot/dts/tegra20-ventana.dts
+++ b/arch/arm/boot/dts/tegra20-ventana.dts
@@ -469,6 +469,63 @@ 
 		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>;
+
+		/* resources used by the power sequences */
+		pwms = <&pwm 2 5000000>;
+		pwm-names = "backlight";
+		power-supply = <&vdd_bl_reg>;
+
+		power-sequences {
+			power-on {
+				step0 {
+					type = "regulator";
+					id = "power";
+					enable;
+				};
+				step1 {
+					type = "delay";
+					delay = <10000>;
+				};
+				step2 {
+					type = "pwm";
+					id = "backlight";
+					enable;
+				};
+				step3 {
+					type = "gpio";
+					gpio = <&gpio 28 0>;
+					value = <1>;
+				};
+			};
+
+			power-off {
+				step0 {
+					type = "gpio";
+					gpio = <&gpio 28 0>;
+					value = <0>;
+				};
+				step1 {
+					type = "pwm";
+					id = "backlight";
+					disable;
+				};
+				step2 {
+					type = "delay";
+					delay = <10000>;
+				};
+				step3 {
+					type = "regulator";
+					id = "power";
+					disable;
+				};
+			};
+		};
+	};
+
 	regulators {
 		compatible = "simple-bus";
 		#address-cells = <1>;
@@ -512,7 +569,7 @@ 
 			enable-active-high;
 		};
 
-		regulator@4 {
+		vdd_bl_reg: regulator@4 {
 			compatible = "regulator-fixed";
 			reg = <4>;
 			regulator-name = "vdd_bl";