ARM: dts: add support for I2SE Duckbill 2 boards

This machine is an USB pen drive sized development board,
based on NXP's i.MX28 CPU. In contrast to the previous
model "Duckbill", the "Duckbill 2" series has internal
eMMC storage.
Signed-off-by: Michael Heimpold <mhei@heimpold.de>
Cc: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/Makefile

@@ -488,6 +488,7 @@ dtb-$(CONFIG_ARCH_MXS) += \
 	imx28-cfa10056.dtb \
 	imx28-cfa10057.dtb \
 	imx28-cfa10058.dtb \
+	imx28-duckbill-2.dtb \
 	imx28-duckbill.dtb \
 	imx28-eukrea-mbmx283lc.dtb \
 	imx28-eukrea-mbmx287lc.dtb \

arch/arm/boot/dts/imx28-duckbill-2.dts

+/*
+ * Copyright (C) 2015-2017 I2SE GmbH <info@i2se.com>
+ * Copyright (C) 2016 Michael Heimpold <mhei@heimpold.de>
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/dts-v1/;
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/gpio/gpio.h>
+#include "imx28.dtsi"
+
+/ {
+	model = "I2SE Duckbill 2";
+	compatible = "i2se,duckbill-2", "fsl,imx28";
+
+	memory {
+		reg = <0x40000000 0x08000000>;
+	};
+
+	apb@80000000 {
+		apbh@80000000 {
+			ssp0: ssp@80010000 {
+				compatible = "fsl,imx28-mmc";
+				pinctrl-names = "default";
+				pinctrl-0 = <&mmc0_8bit_pins_a
+					&mmc0_cd_cfg &mmc0_sck_cfg>;
+				bus-width = <8>;
+				vmmc-supply = <&reg_3p3v>;
+				status = "okay";
+				non-removable;
+			};
+
+			ssp2: ssp@80014000 {
+				compatible = "fsl,imx28-mmc";
+				pinctrl-names = "default";
+				pinctrl-0 = <&mmc2_4bit_pins_b
+					&mmc2_cd_cfg &mmc2_sck_cfg_b>;
+				bus-width = <4>;
+				vmmc-supply = <&reg_3p3v>;
+				status = "okay";
+			};
+
+			pinctrl@80018000 {
+				pinctrl-names = "default";
+				pinctrl-0 = <&hog_pins_a>;
+
+				hog_pins_a: hog@0 {
+					reg = <0>;
+					fsl,pinmux-ids = <
+						MX28_PAD_LCD_D17__GPIO_1_17    /* Revision detection */
+					>;
+					fsl,drive-strength = <MXS_DRIVE_4mA>;
+					fsl,voltage = <MXS_VOLTAGE_HIGH>;
+					fsl,pull-up = <MXS_PULL_DISABLE>;
+				};
+
+				mac0_phy_reset_pin: mac0-phy-reset@0 {
+					reg = <0>;
+					fsl,pinmux-ids = <
+						MX28_PAD_GPMI_ALE__GPIO_0_26    /* PHY Reset */
+					>;
+					fsl,drive-strength = <MXS_DRIVE_4mA>;
+					fsl,voltage = <MXS_VOLTAGE_HIGH>;
+					fsl,pull-up = <MXS_PULL_DISABLE>;
+				};
+
+				mac0_phy_int_pin: mac0-phy-int@0 {
+					reg = <0>;
+					fsl,pinmux-ids = <
+						MX28_PAD_GPMI_D07__GPIO_0_7    /* PHY Interrupt */
+					>;
+					fsl,drive-strength = <MXS_DRIVE_4mA>;
+					fsl,voltage = <MXS_VOLTAGE_HIGH>;
+					fsl,pull-up = <MXS_PULL_DISABLE>;
+				};
+
+				led_pins: leds@0 {
+					reg = <0>;
+					fsl,pinmux-ids = <
+						MX28_PAD_SAIF0_MCLK__GPIO_3_20
+						MX28_PAD_SAIF0_LRCLK__GPIO_3_21
+					>;
+					fsl,drive-strength = <MXS_DRIVE_4mA>;
+					fsl,voltage = <MXS_VOLTAGE_HIGH>;
+					fsl,pull-up = <MXS_PULL_DISABLE>;
+				};
+			};
+		};
+
+		apbx@80040000 {
+			lradc@80050000 {
+				status = "okay";
+			};
+
+			i2c0: i2c@80058000 {
+				pinctrl-names = "default";
+				pinctrl-0 = <&i2c0_pins_a>;
+				status = "okay";
+			};
+
+			auart0: serial@8006a000 {
+				pinctrl-names = "default";
+				pinctrl-0 = <&auart0_2pins_a>;
+				status = "okay";
+			};
+
+			duart: serial@80074000 {
+				pinctrl-names = "default";
+				pinctrl-0 = <&duart_pins_a>;
+				status = "okay";
+			};
+
+			usbphy0: usbphy@8007c000 {
+				status = "okay";
+			};
+		};
+	};
+
+	ahb@80080000 {
+		usb0: usb@80080000 {
+			status = "okay";
+			dr_mode = "peripheral";
+		};
+
+		mac0: ethernet@800f0000 {
+			phy-mode = "rmii";
+			pinctrl-names = "default";
+			pinctrl-0 = <&mac0_pins_a>, <&mac0_phy_reset_pin>;
+			phy-supply = <&reg_3p3v>;
+			phy-reset-gpios = <&gpio0 26 GPIO_ACTIVE_LOW>;
+			phy-reset-duration = <25>;
+			phy-handle = <&ethphy>;
+			status = "okay";
+
+			mdio {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				ethphy: ethernet-phy@0 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <0>;
+					pinctrl-names = "default";
+					pinctrl-0 = <&mac0_phy_int_pin>;
+					interrupt-parent = <&gpio0>;
+					interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
+					max-speed = <100>;
+				};
+			};
+		};
+	};
+
+	reg_3p3v: regulator-3p3v {
+		compatible = "regulator-fixed";
+		regulator-name = "3P3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&led_pins>;
+
+		status-red {
+			label = "duckbill:red:status";
+			gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "default-on";
+		};
+
+		status-green {
+			label = "duckbill:green:status";
+			gpios = <&gpio3 20 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "heartbeat";
+		};
+	};
+};