[PATCH] arm: tegra: add Ventana backlight device

[PATCH] arm: tegra: add Ventana backlight device

[Alexandre Courbot]

Add the backlight device to the Ventana device tree.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---
 arch/arm/boot/dts/tegra20-ventana.dts | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/arm/boot/dts/tegra20-ventana.dts b/arch/arm/boot/dts/tegra20-ventana.dts
index be90544..27616f7 100644
--- a/arch/arm/boot/dts/tegra20-ventana.dts
+++ b/arch/arm/boot/dts/tegra20-ventana.dts
@@ -317,6 +317,27 @@
 		bus-width = <8>;
 	};
 
+	backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm 2 5000000>;
+
+		brightness-levels = <0 16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 255>;
+		default-brightness-level = <12>;
+		power-supply = <&backlight_reg>;
+		enable-gpios = <&gpio 28 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";
-- 
1.7.11.1

Re: [PATCH] arm: tegra: add Ventana backlight device

[Stephen Warren]

On 06/29/2012 07:24 AM, Alexandre Courbot wrote:
> Add the backlight device to the Ventana device tree.

As I mentioned downstream, I have a patch to add all the regulators for
Ventana to DT. This patch should be rebased on top of that, since it
adds the backlight regulator node too, but co-locates it with a bunch of
other regulators, so won't merge with this patch.

I hope I'll be able to publish an updated version of the Ventana patch
today.

But aside from that, this patch looks reasonable.

Re: [PATCH] arm: tegra: add Ventana backlight device

[Alex Courbot]

On Sat 30 Jun 2012 01:06:37 AM JST, Stephen Warren wrote:
> As I mentioned downstream, I have a patch to add all the regulators for
> Ventana to DT. This patch should be rebased on top of that, since it
> adds the backlight regulator node too, but co-locates it with a bunch of
> other regulators, so won't merge with this patch.

Ok, better wait for your patch then. No need to hurry, this depends on 
other stuff anyway.

Alex.