ARM: tegra: enable LCD panel on Ventana

Ventana uses a CLAA101WA01A LCD panel. Enable the relevant display
controller, backlight, and regulators.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>

1 files changed, 36 insertions, 3 deletions

diff --git a/arch/arm/boot/dts/tegra20-ventana.dts b/arch/arm/boot/dts/tegra20-ventana.dts
index 571d12e6ac2d..ca8484cccddc 100644
--- a/arch/arm/boot/dts/tegra20-ventana.dts
+++ b/arch/arm/boot/dts/tegra20-ventana.dts
@@ -17,6 +17,14 @@
         };
 
         host1x@50000000 {
+                dc@54200000 {
+                        rgb {
+                                status = "okay";
+
+                                nvidia,panel = <&panel>;
+                        };
+                };
+
                 hdmi@54280000 {
                         status = "okay";
 
@@ -309,6 +317,10 @@
                 status = "okay";
         };
 
+        pwm: pwm@7000a000 {
+                status = "okay";
+        };
+
         i2c@7000c000 {
                 status = "okay";
                 clock-frequency = <400000>;
@@ -359,7 +371,7 @@
                         #size-cells = <0>;
                 };
 
-                i2c@1 {
+                lvds_ddc: i2c@1 {
                         reg = <1>;
                         #address-cells = <1>;
                         #size-cells = <0>;
@@ -557,6 +569,17 @@
                 non-removable;
         };
 
+        backlight: backlight {
+                compatible = "pwm-backlight";
+
+                enable-gpios = <&gpio TEGRA_GPIO(D, 4) GPIO_ACTIVE_HIGH>;
+                power-supply = <&vdd_bl_reg>;
+                pwms = <&pwm 2 5000000>;
+
+                brightness-levels = <0 4 8 16 32 64 128 255>;
+                default-brightness-level = <6>;
+        };
+
         clocks {
                 compatible = "simple-bus";
                 #address-cells = <1>;
@@ -581,6 +604,16 @@
                 };
         };
 
+        panel: panel {
+                compatible = "chunghwa,claa101wa01a", "simple-panel";
+
+                power-supply = <&vdd_pnl_reg>;
+                enable-gpios = <&gpio TEGRA_GPIO(B, 2) GPIO_ACTIVE_HIGH>;
+
+                backlight = <&backlight>;
+                ddc-i2c-bus = <&lvds_ddc>;
+        };
+
         regulators {
                 compatible = "simple-bus";
                 #address-cells = <1>;
@@ -614,7 +647,7 @@
                         enable-active-high;
                 };
 
-                regulator@3 {
+                vdd_pnl_reg: regulator@3 {
                         compatible = "regulator-fixed";
                         reg = <3>;
                         regulator-name = "vdd_pnl";
@@ -624,7 +657,7 @@
                         enable-active-high;
                 };
 
-                regulator@4 {
+                vdd_bl_reg: regulator@4 {
                         compatible = "regulator-fixed";
                         reg = <4>;
                         regulator-name = "vdd_bl";