board: phytec: imx8mp: Add PHYTEC phyCORE-i.MX8MP support

Add initial support PHYTEC phyCORE-i.MX8MP SOM.

    Supported features:
     - 2GB LPDDR4 RAM
     - eMMC
     - external SD
     - debug UART2
     - watchdog

Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Reviewed-by: Heiko Schocher <hs@denx.de>
diff --git a/arch/arm/dts/imx8mp-phyboard-pollux-rdk.dts b/arch/arm/dts/imx8mp-phyboard-pollux-rdk.dts
new file mode 100644
index 0000000..0e1a6d9
--- /dev/null
+++ b/arch/arm/dts/imx8mp-phyboard-pollux-rdk.dts
@@ -0,0 +1,161 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 PHYTEC Messtechnik GmbH
+ * Author: Teresa Remmet <t.remmet@phytec.de>
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/leds/leds-pca9532.h>
+#include <dt-bindings/pwm/pwm.h>
+#include "imx8mp-phycore-som.dtsi"
+
+/ {
+	model = "PHYTEC phyBOARD-Pollux i.MX8MP";
+	compatible = "phytec,imx8mp-phyboard-pollux-rdk",
+		     "phytec,imx8mp-phycore-som", "fsl,imx8mp";
+
+	chosen {
+		stdout-path = &uart2;
+	};
+
+	reg_usdhc2_vmmc: regulator-usdhc2 {
+		compatible = "regulator-fixed";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_reg_usdhc2_vmmc>;
+		regulator-name = "VSD_3V3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		startup-delay-us = <100>;
+		off-on-delay-us = <12000>;
+	};
+};
+
+&i2c2 {
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c2>;
+	pinctrl-1 = <&pinctrl_i2c2_gpio>;
+	sda-gpios = <&gpio5 17 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	scl-gpios = <&gpio5 16 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	status = "okay";
+
+	eeprom@51 {
+		compatible = "atmel,24c02";
+		reg = <0x51>;
+		pagesize = <16>;
+	};
+
+	leds@62 {
+		compatible = "nxp,pca9533";
+		reg = <0x62>;
+
+		led1 {
+			type = <PCA9532_TYPE_LED>;
+		};
+
+		led2 {
+			type = <PCA9532_TYPE_LED>;
+		};
+
+		led3 {
+			type = <PCA9532_TYPE_LED>;
+		};
+	};
+};
+
+&snvs_pwrkey {
+	status = "okay";
+};
+
+/* debug console */
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart2>;
+	status = "okay";
+};
+
+/* SD-Card */
+&usdhc2 {
+	pinctrl-names = "default", "state_100mhz", "state_200mhz";
+	pinctrl-0 = <&pinctrl_usdhc2>, <&pinctrl_usdhc2_pins>;
+	pinctrl-1 = <&pinctrl_usdhc2_100mhz>, <&pinctrl_usdhc2_pins>;
+	pinctrl-2 = <&pinctrl_usdhc2_200mhz>, <&pinctrl_usdhc2_pins>;
+	cd-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>;
+	vmmc-supply = <&reg_usdhc2_vmmc>;
+	bus-width = <4>;
+	status = "okay";
+};
+
+&iomuxc {
+	pinctrl_i2c2: i2c2grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_I2C2_SCL__I2C2_SCL		0x400001c3
+			MX8MP_IOMUXC_I2C2_SDA__I2C2_SDA		0x400001c3
+		>;
+	};
+
+	pinctrl_i2c2_gpio: i2c2gpiogrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_I2C2_SCL__GPIO5_IO16	0x1e3
+			MX8MP_IOMUXC_I2C2_SDA__GPIO5_IO17	0x1e3
+		>;
+	};
+
+	pinctrl_reg_usdhc2_vmmc: regusdhc2vmmcgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD2_RESET_B__GPIO2_IO19	0x41
+		>;
+	};
+
+	pinctrl_uart2: uart2grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_UART2_RXD__UART2_DCE_RX	0x49
+			MX8MP_IOMUXC_UART2_TXD__UART2_DCE_TX	0x49
+		>;
+	};
+
+	pinctrl_usdhc2_pins: usdhc2-gpiogrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD2_CD_B__GPIO2_IO12	0x1c4
+		>;
+	};
+
+	pinctrl_usdhc2: usdhc2grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD2_CLK__USDHC2_CLK	0x190
+			MX8MP_IOMUXC_SD2_CMD__USDHC2_CMD	0x1d0
+			MX8MP_IOMUXC_SD2_DATA0__USDHC2_DATA0	0x1d0
+			MX8MP_IOMUXC_SD2_DATA1__USDHC2_DATA1	0x1d0
+			MX8MP_IOMUXC_SD2_DATA2__USDHC2_DATA2	0x1d0
+			MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3	0x1d0
+			MX8MP_IOMUXC_GPIO1_IO04__USDHC2_VSELECT	0xc1
+		>;
+	};
+
+	pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD2_CLK__USDHC2_CLK	0x194
+			MX8MP_IOMUXC_SD2_CMD__USDHC2_CMD	0x1d4
+			MX8MP_IOMUXC_SD2_DATA0__USDHC2_DATA0	0x1d4
+			MX8MP_IOMUXC_SD2_DATA1__USDHC2_DATA1	0x1d4
+			MX8MP_IOMUXC_SD2_DATA2__USDHC2_DATA2	0x1d4
+			MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3	0x1d4
+			MX8MP_IOMUXC_GPIO1_IO04__USDHC2_VSELECT	0xc1
+		>;
+	};
+
+	pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD2_CLK__USDHC2_CLK	0x196
+			MX8MP_IOMUXC_SD2_CMD__USDHC2_CMD	0x1d6
+			MX8MP_IOMUXC_SD2_DATA0__USDHC2_DATA0	0x1d6
+			MX8MP_IOMUXC_SD2_DATA1__USDHC2_DATA1	0x1d6
+			MX8MP_IOMUXC_SD2_DATA2__USDHC2_DATA2	0x1d6
+			MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3	0x1d6
+			MX8MP_IOMUXC_GPIO1_IO04__USDHC2_VSELECT	0xc1
+		>;
+	};
+};