arm64: tegra: Add DSI panel on Jetson TX1

Some variants of the Jetson TX1 ship with a 8.0" WUXGA TFT LCD panel
connected via four DSI lanes.
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm64/boot/dts/nvidia/tegra210-p2371-2180.dts

@@ -6,4 +6,49 @@
 / {
 	model = "NVIDIA Jetson TX1 Developer Kit";
 	compatible = "nvidia,p2371-2180", "nvidia,tegra210";
+
+	host1x@50000000 {
+		dsi@54300000 {
+			status = "okay";
+
+			avdd-dsi-csi-supply = <&vdd_dsi_csi>;
+
+			panel@0 {
+				compatible = "auo,b080uan01";
+				reg = <0>;
+
+				enable-gpios = <&gpio TEGRA_GPIO(V, 2)
+						GPIO_ACTIVE_HIGH>;
+				power-supply = <&vdd_5v0_io>;
+				backlight = <&backlight>;
+			};
+		};
+	};
+
+	i2c@7000c400 {
+		backlight: backlight@2c {
+			compatible = "ti,lp8557";
+			reg = <0x2c>;
+
+			dev-ctrl = /bits/ 8 <0x80>;
+			init-brt = /bits/ 8 <0xff>;
+
+			pwm-period = <29334>;
+
+			pwms = <&pwm 0 29334>;
+			pwm-names = "lp8557";
+
+			/* 3 LED string */
+			rom_14h {
+				rom-addr = /bits/ 8 <0x14>;
+				rom-val = /bits/ 8 <0x87>;
+			};
+
+			/* boost frequency 1 MHz */
+			rom_13h {
+				rom-addr = /bits/ 8 <0x13>;
+				rom-val = /bits/ 8 <0x01>;
+			};
+		};
+	};
 };

arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi

@@ -1261,6 +1261,23 @@ shutdown {
 		};
 	};
 
+	pwm@7000a000 {
+		status = "okay";
+	};
+
+	i2c@7000c400 {
+		status = "okay";
+		clock-frequency = <100000>;
+
+		exp1: gpio@74 {
+			compatible = "ti,tca9539";
+			reg = <0x74>;
+
+			#gpio-cells = <2>;
+			gpio-controller;
+		};
+	};
+
 	/* MMC/SD */
 	sdhci@700b0000 {
 		status = "okay";
@@ -1340,6 +1357,39 @@ vdd_3v3_sd: regulator@4 {
 			regulator-enable-ramp-delay = <472>;
 			regulator-disable-ramp-delay = <4880>;
 		};
+
+		vdd_dsi_csi: regulator@5 {
+			compatible = "regulator-fixed";
+			reg = <5>;
+			regulator-name = "AVDD_DSI_CSI_1V2";
+			regulator-min-microvolt = <1200000>;
+			regulator-max-microvolt = <1200000>;
+			vin-supply = <&vdd_sys_1v2>;
+		};
+
+		vdd_3v3_dis: regulator@6 {
+			compatible = "regulator-fixed";
+			reg = <6>;
+			regulator-name = "VDD_DIS_3V3_LCD";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			regulator-always-on;
+			gpio = <&exp1 3 GPIO_ACTIVE_HIGH>;
+			enable-active-high;
+			vin-supply = <&vdd_3v3_sys>;
+		};
+
+		vdd_1v8_dis: regulator@7 {
+			compatible = "regulator-fixed";
+			reg = <7>;
+			regulator-name = "VDD_LCD_1V8_DIS";
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+			regulator-always-on;
+			gpio = <&exp1 14 GPIO_ACTIVE_HIGH>;
+			enable-active-high;
+			vin-supply = <&vdd_1v8>;
+		};
 	};
 
 	gpio-keys {