ARM: tegra: colibri_t20: add eval board device tree

Add an evaluation board device tree more in-line with all our other
device trees.

Signed-off-by: Marcel Ziswiler <[e-mail]>
Signed-off-by: Thierry Reding <[e-mail]>

Documentation/devicetree/bindings/arm/tegra.txt

···
   toradex,apalis-tk1-v1.2
   toradex,apalis-tk1-v1.2-eval
   toradex,colibri_t20
+  toradex,colibri_t20-eval-v3
   toradex,colibri_t20-iris
   toradex,colibri_t30
   toradex,colibri_t30-eval-v3

arch/arm/boot/dts/Makefile

···
 	tango4-vantage-1172.dtb
 dtb-$(CONFIG_ARCH_TEGRA_2x_SOC) += \
 	tegra20-harmony.dtb \
+	tegra20-colibri-eval-v3.dtb \
 	tegra20-colibri-iris.dtb \
 	tegra20-medcom-wide.dtb \
 	tegra20-paz00.dtb \

arch/arm/boot/dts/tegra20-colibri-eval-v3.dts

···
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/dts-v1/;
+
+#include <dt-bindings/input/input.h>
+#include "tegra20-colibri.dtsi"
+
+/ {
+	model = "Toradex Colibri T20 on Colibri Evaluation Board";
+	compatible = "toradex,colibri_t20-eval-v3", "toradex,colibri_t20",
+		     "nvidia,tegra20";
+
+	aliases {
+		rtc0 = "/i2c@7000c000/rtc@68";
+		rtc1 = "/i2c@7000d000/pmic@34";
+		rtc2 = "/rtc@7000e000";
+		serial0 = &uarta;
+		serial1 = &uartd;
+		serial2 = &uartb;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	host1x@50000000 {
+		dc@54200000 {
+			rgb {
+				status = "okay";
+				nvidia,panel = <&panel>;
+			};
+		};
+
+		hdmi@54280000 {
+			status = "okay";
+			hdmi-supply = <&reg_5v0>;
+		};
+	};
+
+	pinmux@70000014 {
+		state_default: pinmux {
+			bl-on {
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+
+			ddc {
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+
+			hotplug-detect {
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+
+			i2c {
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+
+			lcd {
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+
+			lm1 {
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+
+			mmc {
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+
+			mmccd {
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+
+			pwm-a-b {
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+
+			pwm-c-d {
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+
+			ssp {
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+
+			uart-a {
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+
+			uart-b {
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+
+			uart-c {
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+
+			usbh-pen {
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+			};
+		};
+	};
+
+	/* Colibri UART-A */
+	serial@70006000 {
+		status = "okay";
+	};
+
+	/* Colibri UART-C */
+	serial@70006040 {
+		status = "okay";
+	};
+
+	/* Colibri UART-B */
+	serial@70006300 {
+		status = "okay";
+	};
+
+	pwm@7000a000 {
+		status = "okay";
+	};
+
+	/*
+	 * GEN1_I2C: I2C_SDA/SCL on SODIMM pin 194/196 (e.g. RTC on carrier
+	 * board)
+	 */
+	i2c@7000c000 {
+		status = "okay";
+		clock-frequency = <400000>;
+
+		/* M41T0M6 real time clock on carrier board */
+		rtc@68 {
+			compatible = "st,m41t0";
+			reg = <0x68>;
+		};
+	};
+
+	/* GEN2_I2C: unused */
+
+	/* CAM_I2C (I2C3): unused */
+
+	/* DDC_CLOCK/DATA on X3 pin 15/16 (e.g. display EDID) */
+	i2c@7000c400 {
+		status = "okay";
+	};
+
+	/* EHCI instance 0: USB1_DP/N -> USBC_P/N */
+	usb@c5000000 {
+		status = "okay";
+		dr_mode = "otg";
+	};
+
+	usb-phy@c5000000 {
+		status = "okay";
+		vbus-supply = <&reg_usbc_vbus>;
+	};
+
+	/* EHCI instance 2: USB3_DP/N -> USBH_P/N */
+	usb@c5008000 {
+		status = "okay";
+	};
+
+	usb-phy@c5008000 {
+		status = "okay";
+		vbus-supply = <&reg_usbh_vbus>;
+	};
+
+	/* SPI4: Colibri SSP */
+	spi@7000da00 {
+		status = "okay";
+		spi-max-frequency = <25000000>;
+
+		can@0 {
+			compatible = "microchip,mcp2515";
+			reg = <0>;
+			clocks = <&clk16m>;
+			interrupt-parent = <&gpio>;
+			/* CAN_INT */
+			interrupts = <TEGRA_GPIO(A, 0) IRQ_TYPE_EDGE_FALLING>;
+			spi-max-frequency = <10000000>;
+			vdd-supply = <&reg_3v3>;
+			xceiver-supply = <&reg_5v0>;
+		};
+	};
+
+	/* SD/MMC */
+	sdhci@c8000600 {
+		status = "okay";
+		bus-width = <4>;
+		cd-gpios = <&gpio TEGRA_GPIO(C, 7) GPIO_ACTIVE_LOW>; /* MMCD */
+		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> */
+	};
+
+	clk16m: osc3 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <16000000>;
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		wakeup {
+			label = "SODIMM pin 45 wakeup";
+			gpios = <&gpio TEGRA_GPIO(V, 3) GPIO_ACTIVE_HIGH>;
+			linux,code = <KEY_WAKEUP>;
+			debounce-interval = <10>;
+			wakeup-source;
+		};
+	};
+
+	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_SW";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
+	reg_5v0: regulator-5v0 {
+		compatible = "regulator-fixed";
+		regulator-name = "5V_SW";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+
+	reg_usbc_vbus: regulator-usbc-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "VCC_USB5";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&reg_5v0>;
+	};
+
+	/* USBH_PEN resp. USB_P_EN */
+	reg_usbh_vbus: regulator-usbh-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "VCC_USB[1-4]";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gpio TEGRA_GPIO(W, 2) GPIO_ACTIVE_LOW>;
+		vin-supply = <&reg_5v0>;
+	};
+};