ARM: tegra: Add Toradex Iris carrier board DT with T20 512MB COM

This adds the device tree for the Toradex Iris carrier board used
together with a Colibri T20 512MB COM.

The Iris has the following features, in brackets the current status:
- DVI and VGA output through DVI-I connector (DVI-D enabled and tested)
- LVDS output
- 1 USB host port (enabled and tested)
- 1 USB OTG port (enabled)
- 100 MBit Ethernet (enabled and tested)
- 5 UART ports  (2 on 10way headers enabled and tested)
- 1 MicroSD Slot (enabled and tested)
- Audio connectors (enabled, only HP out and Line-in tested)
- i2c RTC
- GPIO connector (enabled, only sparsely tested)
- external i2c bus
- 4 PWM out
- analog in

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

Documentation/devicetree/bindings/arm/tegra.txt

@@ -31,3 +31,4 @@ board-specific compatible values:
   nvidia,ventana
   nvidia,whistler
   toradex,colibri_t20-512
+  toradex,iris

arch/arm/boot/dts/Makefile

@@ -134,6 +134,7 @@ dtb-$(CONFIG_ARCH_SPEAR6XX)+= spear600-evb.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun4i-a10-cubieboard.dtb \
 	sun5i-a13-olinuxino.dtb
 dtb-$(CONFIG_ARCH_TEGRA) += tegra20-harmony.dtb \
+	tegra20-iris-512.dtb \
 	tegra20-medcom-wide.dtb \
 	tegra20-paz00.dtb \
 	tegra20-plutux.dtb \

arch/arm/boot/dts/tegra20-iris-512.dts

@@ -0,0 +1,89 @@
+/dts-v1/;
+
+/include/ "tegra20-colibri-512.dtsi"
+
+/ {
+	model = "Toradex Colibri T20 512MB on Iris";
+	compatible = "toradex,iris", "toradex,colibri_t20-512", "nvidia,tegra20";
+
+	host1x {
+		hdmi {
+			status = "okay";
+		};
+	};
+
+	pinmux {
+		state_default: pinmux {
+			hdint {
+				nvidia,tristate = <0>;
+			};
+
+			i2cddc {
+				nvidia,tristate = <0>;
+			};
+
+			sdio4 {
+				nvidia,tristate = <0>;
+			};
+
+			uarta {
+				nvidia,tristate = <0>;
+			};
+
+			uartd {
+				nvidia,tristate = <0>;
+			};
+		};
+	};
+
+	usb@c5000000 {
+		status = "okay";
+		dr_mode = "otg";
+	};
+
+	usb@c5008000 {
+		status = "okay";
+	};
+
+	serial@70006000 {
+		status = "okay";
+	};
+
+	serial@70006300 {
+		status = "okay";
+	};
+
+	i2c_ddc: i2c@7000c400 {
+		status = "okay";
+	};
+
+	sdhci@c8000600 {
+		status = "okay";
+		bus-width = <4>;
+		vmmc-supply = <&vcc_sd_reg>;
+		vqmmc-supply = <&vcc_sd_reg>;
+	};
+
+	regulators {
+		regulator@0 {
+			compatible = "regulator-fixed";
+			reg = <0>;
+			regulator-name = "usb_host_vbus";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			regulator-boot-on;
+			regulator-always-on;
+			gpio = <&gpio 178 0>;
+		};
+
+		vcc_sd_reg: regulator@1 {
+			compatible = "regulator-fixed";
+			reg = <1>;
+			regulator-name = "vcc_sd";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			regulator-boot-on;
+			regulator-always-on;
+		};
+	};
+};