[PATCH v2 02/13] ARM: tegra: Enable LVDS and HDMI on Cardhu

[Thierry Reding <thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Add backlight and panel nodes for the Cardhu 10.1" WXGA TFT LCD panel
and enable the HDMI output and hotplug detection.

Note that HDMI doesn't work for some reason and I haven't found out why
yet. I remember someone reporting that it worked at some point in time
using this set of nodes but that no longer seems to be the case. Running
the same kernel on Beaver has working HDMI, though.

Signed-off-by: Thierry Reding <treding-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
---
Changes in v2:
- remove backlight-boot-off property for now

 arch/arm/boot/dts/tegra30-cardhu.dtsi | 50 +++++++++++++++++++++++++++++++++--
 1 file changed, 48 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/tegra30-cardhu.dtsi b/arch/arm/boot/dts/tegra30-cardhu.dtsi
index 5ea7dfa..849b699 100644
--- a/arch/arm/boot/dts/tegra30-cardhu.dtsi
+++ b/arch/arm/boot/dts/tegra30-cardhu.dtsi
@@ -51,6 +51,27 @@
 		};
 	};
 
+	host1x {
+		dc@54200000 {
+			rgb {
+				status = "okay";
+
+				nvidia,panel = <&panel>;
+			};
+		};
+
+		hdmi {
+			status = "okay";
+
+			vdd-supply = <&sys_3v3_reg>;
+			pll-supply = <&vio_reg>;
+
+			nvidia,hpd-gpio =
+				<&gpio TEGRA_GPIO(N, 7) GPIO_ACTIVE_HIGH>;
+			nvidia,ddc-i2c-bus = <&hdmiddc>;
+		};
+	};
+
 	pinmux {
 		pinctrl-names = "default";
 		pinctrl-0 = <&state_default>;
@@ -147,7 +168,11 @@
 		status = "okay";
 	};
 
-	i2c@7000c000 {
+	pwm {
+		status = "okay";
+	};
+
+	panelddc: i2c@7000c000 {
 		status = "okay";
 		clock-frequency = <100000>;
 	};
@@ -170,7 +195,7 @@
 		};
 	};
 
-	i2c@7000c700 {
+	hdmiddc: i2c@7000c700 {
 		status = "okay";
 		clock-frequency = <100000>;
 	};
@@ -367,6 +392,17 @@
 		status = "okay";
 	};
 
+	backlight: backlight {
+		compatible = "pwm-backlight";
+
+		enable-gpios = <&gpio TEGRA_GPIO(H, 2) GPIO_ACTIVE_HIGH>;
+		power-supply = <&vdd_bl_reg>;
+		pwms = <&pwm 0 5000000>;
+
+		brightness-levels = <0 4 8 16 32 64 128 255>;
+		default-brightness-level = <6>;
+	};
+
 	clocks {
 		compatible = "simple-bus";
 		#address-cells = <1>;
@@ -380,6 +416,16 @@
 		};
 	};
 
+	panel: panel {
+		compatible = "chunghwa,claa101wb01";
+		ddc-i2c-bus = <&panelddc>;
+
+		power-supply = <&vdd_pnl1_reg>;
+		enable-gpios = <&gpio TEGRA_GPIO(L, 2) GPIO_ACTIVE_HIGH>;
+
+		backlight = <&backlight>;
+	};
+
 	regulators {
 		compatible = "simple-bus";
 		#address-cells = <1>;
-- 
1.8.4