ARM: dts: am335x: add common file for UC-2100 series

The UC-2100 series consists many boards with different peripheral
devices and wireless modules, hence we fetch common items and
create a common dtsi file to increase reusability. All boards in
UC-2100 series will include this common dtsi file.
Signed-off-by: Wes Huang (黃淵河) <wes.huang@moxa.com>
Signed-off-by: Fero JD Zhou (周俊達) <FeroJD.Zhou@moxa.com>
Signed-off-by: SZ Lin (林上智) <sz.lin@moxa.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am335x-moxa-uc-2100-common.dtsi

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018 MOXA Inc. - https://www.moxa.com/
+ *
+ * Authors: SZ Lin (林上智) <sz.lin@moxa.com>
+ *          Wes Huang (黃淵河) <wes.huang@moxa.com>
+ *          Fero JD Zhou (周俊達) <FeroJD.Zhou@moxa.com>
+ */
+
+#include "am33xx.dtsi"
+
+/ {
+	vbat: vbat-regulator {
+		compatible = "regulator-fixed";
+	};
+
+	/* Power supply provides a fixed 3.3V @3A */
+	vmmcsd_fixed: vmmcsd-regulator {
+	      compatible = "regulator-fixed";
+	      regulator-name = "vmmcsd_fixed";
+	      regulator-min-microvolt = <3300000>;
+	      regulator-max-microvolt = <3300000>;
+	      regulator-boot-on;
+	};
+
+	buttons: push_button {
+		compatible = "gpio-keys";
+	};
+};
+
+&am33xx_pinmux {
+	pinctrl-names = "default";
+
+	i2c0_pins: pinmux_i2c0_pins {
+		pinctrl-single,pins = <
+			AM33XX_IOPAD(0x988, PIN_INPUT_PULLUP | MUX_MODE0)	/* i2c0_sda.i2c0_sda */
+			AM33XX_IOPAD(0x98c, PIN_INPUT_PULLUP | MUX_MODE0)	/* i2c0_scl.i2c0_scl */
+		>;
+	};
+
+	push_button_pins: pinmux_push_button {
+		pinctrl-single,pins = <
+			AM33XX_IOPAD(0x8e4, PIN_INPUT_PULLDOWN | MUX_MODE7)	/* lcd_hsync.gpio2_23 */
+		>;
+	};
+
+	uart0_pins: pinmux_uart0_pins {
+		pinctrl-single,pins = <
+			AM33XX_IOPAD(0x970, PIN_INPUT_PULLUP | MUX_MODE0)	/* uart0_rxd.uart0_rxd */
+			AM33XX_IOPAD(0x974, PIN_OUTPUT_PULLDOWN | MUX_MODE0)	/* uart0_txd.uart0_txd */
+		>;
+	};
+
+	davinci_mdio_default: davinci_mdio_default {
+		pinctrl-single,pins = <
+			/* MDIO */
+			AM33XX_IOPAD(0x948, PIN_INPUT_PULLUP | SLEWCTRL_FAST | MUX_MODE0)	/* mdio_data.mdio_data */
+			AM33XX_IOPAD(0x94c, PIN_OUTPUT_PULLUP | MUX_MODE0)			/* mdio_clk.mdio_clk */
+		>;
+	};
+
+	mmc1_pins_default: pinmux_mmc1_pins {
+		pinctrl-single,pins = <
+			/* eMMC */
+			AM33XX_IOPAD(0x800, PIN_INPUT_PULLUP | MUX_MODE1)	/* gpmc_ad12.mmc1_dat0 */
+			AM33XX_IOPAD(0x804, PIN_INPUT_PULLUP | MUX_MODE1)	/* gpmc_ad13.mmc1_dat1 */
+			AM33XX_IOPAD(0x808, PIN_INPUT_PULLUP | MUX_MODE1)	/* gpmc_ad14.mmc1_dat2 */
+			AM33XX_IOPAD(0x80c, PIN_INPUT_PULLUP | MUX_MODE1)	/* gpmc_ad15.mmc1_dat3 */
+			AM33XX_IOPAD(0x810, PIN_INPUT_PULLUP | MUX_MODE1)	/* gpmc_ad8.mmc1_dat4 */
+			AM33XX_IOPAD(0x814, PIN_INPUT_PULLUP | MUX_MODE1)	/* gpmc_ad9.mmc1_dat5 */
+			AM33XX_IOPAD(0x818, PIN_INPUT_PULLUP | MUX_MODE1)	/* gpmc_ad10.mmc1_dat6 */
+			AM33XX_IOPAD(0x81c, PIN_INPUT_PULLUP | MUX_MODE1)	/* gpmc_ad11.mmc1_dat7 */
+			AM33XX_IOPAD(0x884, PIN_INPUT_PULLUP | MUX_MODE2)	/* gpmc_csn2.mmc1_cmd */
+			AM33XX_IOPAD(0x880, PIN_INPUT_PULLUP | MUX_MODE2)	/* gpmc_csn1.mmc1_clk */
+		>;
+	};
+
+	spi0_pins: pinmux_spi0 {
+		pinctrl-single,pins = <
+			AM33XX_IOPAD(0x950, PIN_INPUT_PULLUP | MUX_MODE0)	 /* spi0_sclk.spi0_sclk */
+			AM33XX_IOPAD(0x95c, PIN_INPUT_PULLUP | MUX_MODE0)	 /* spi0_cs0.spi0_cs0 */
+			AM33XX_IOPAD(0x954, PIN_INPUT_PULLUP | MUX_MODE0)	 /* spi0_d0.spi0_d0 */
+			AM33XX_IOPAD(0x958, PIN_INPUT_PULLUP | MUX_MODE0)	 /* spi0_d1.spi0_d1 */
+		>;
+	};
+};
+
+&uart0 {
+	/* Console */
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pins>;
+};
+
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
+
+	status = "okay";
+	clock-frequency = <400000>;
+
+	eeprom: eeprom@50 {
+		compatible = "atmel,24c16";
+		pagesize = <16>;
+		reg = <0x50>;
+	};
+
+	rtc_wdt: rtc_wdt@68 {
+		compatible = "dallas,ds1374";
+		reg = <0x68>;
+	};
+};
+
+&usb {
+	status = "okay";
+};
+
+&usb_ctrl_mod {
+	status = "okay";
+};
+
+&usb0_phy {
+	status = "okay";
+};
+
+&usb0 {
+	status = "okay";
+	dr_mode = "host";
+};
+
+&cppi41dma  {
+	status = "okay";
+};
+
+/* Power */
+&vbat {
+	regulator-name = "vbat";
+	regulator-min-microvolt = <5000000>;
+	regulator-max-microvolt = <5000000>;
+};
+
+&mac {
+	pinctrl-names = "default";
+	pinctrl-0 = <&cpsw_default>;
+	status = "okay";
+};
+
+&davinci_mdio {
+	pinctrl-names = "default";
+	pinctrl-0 = <&davinci_mdio_default>;
+	status = "okay";
+};
+
+&cpsw_emac0 {
+	status = "okay";
+};
+
+&cpsw_emac1 {
+	status = "okay";
+};
+
+&phy_sel {
+	reg= <0x44e10650 0xf5>;
+	rmii-clock-ext;
+};
+
+&sham {
+	status = "okay";
+};
+
+&aes {
+	status = "okay";
+};
+
+&gpio0 {
+	ti,no-reset-on-init;
+};
+
+&mmc2 {
+	pinctrl-names = "default";
+	vmmc-supply = <&vmmcsd_fixed>;
+	bus-width = <8>;
+	pinctrl-0 = <&mmc1_pins_default>;
+	ti,non-removable;
+	status = "okay";
+};
+
+&buttons {
+	pinctrl-names = "default";
+	pinctrl-0 = <&push_button_pins>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	button@0 {
+		label = "push_button";
+		linux,code = <0x100>;
+		gpios = <&gpio2 23 GPIO_ACTIVE_LOW>;
+	};
+};
+
+/* SPI Busses */
+&spi0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_pins>;
+
+	m25p80@0 {
+		compatible = "mx25l6405d";
+		spi-max-frequency = <40000000>;
+
+		reg = <0>;
+		spi-cpol;
+		spi-cpha;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			/* reg : The partition's offset and size within the mtd bank. */
+			partitions@0 {
+				label = "MLO";
+				reg = <0x0 0x80000>;
+			};
+
+			partitions@1 {
+				label = "U-Boot";
+				reg = <0x80000 0x100000>;
+			};
+
+			partitions@2 {
+				label = "U-Boot Env";
+				reg = <0x180000 0x40000>;
+			};
+		};
+	};
+};
+
+&spi1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi1_pins>;
+
+	tpm_spi_tis@0 {
+		compatible = "tcg,tpm_tis-spi";
+		reg = <0>;
+		spi-max-frequency = <500000>;
+	};
+};