ARM: tegra: colibri_t20: iris: display controller rgb panel support

Add display controller parallel RGB panel support incl. backlight PWM.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/arch/arm/boot/dts/tegra20-colibri-iris.dts b/arch/arm/boot/dts/tegra20-colibri-iris.dts
index 28386b8..21713b7 100644 (file)
--- a/arch/arm/boot/dts/tegra20-colibri-iris.dts
+++ b/arch/arm/boot/dts/tegra20-colibri-iris.dts
@@ -21,6 +21,13 @@
        };
 
        host1x@50000000 {
+               dc@54200000 {
+                       rgb {
+                               status = "okay";
+                               nvidia,panel = <&panel>;
+                       };
+               };
+
                hdmi@54280000 {
                        status = "okay";
                        hdmi-supply = <&reg_5v0>;
@@ -99,6 +106,10 @@
                status = "okay";
        };
 
+       pwm@7000a000 {
+               status = "okay";
+       };
+
        /*
         * GEN1_I2C: I2C_SDA/SCL on SODIMM pin 194/196 (e.g. RTC on carrier
         * board)
@@ -149,6 +160,26 @@
                no-1-8-v;
        };
 
+       backlight: backlight {
+               compatible = "pwm-backlight";
+               brightness-levels = <255 128 64 32 16 8 4 0>;
+               default-brightness-level = <6>;
+               /* BL_ON */
+               enable-gpios = <&gpio TEGRA_GPIO(T, 4) GPIO_ACTIVE_HIGH>;
+               power-supply = <&reg_3v3>;
+               pwms = <&pwm 0 5000000>; /* PWM<A> */
+       };
+
+       panel: panel {
+               /*
+                * edt,et057090dhu: EDT 5.7" LCD TFT
+                * edt,et070080dh6: EDT 7.0" LCD TFT
+                */
+               compatible = "edt,et057090dhu", "simple-panel";
+               backlight = <&backlight>;
+               power-supply = <&reg_3v3>;
+       };
+
        reg_3v3: regulator-3v3 {
                compatible = "regulator-fixed";
                regulator-name = "3.3V";