ARM: sun4i: dt: Add new LinkSprite pcDuino2 board

The LinkSprite pcDuino2 board is almost identical to the older
LinkSprite pcDuino1 board according to the schematic pdf files.
So we just include the existing "sun4i-a10-pcduino.dts" file and
make the necessary adjustments.
Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/Makefile

@@ -587,7 +587,8 @@ dtb-$(CONFIG_MACH_SUN4I) += \
 	sun4i-a10-mk802.dtb \
 	sun4i-a10-mk802ii.dtb \
 	sun4i-a10-olinuxino-lime.dtb \
-	sun4i-a10-pcduino.dtb
+	sun4i-a10-pcduino.dtb \
+	sun4i-a10-pcduino2.dtb
 dtb-$(CONFIG_MACH_SUN5I) += \
 	sun5i-a10s-auxtek-t003.dtb \
 	sun5i-a10s-auxtek-t004.dtb \

arch/arm/boot/dts/sun4i-a10-pcduino2.dts

+/*
+ * Copyright 2015 Siarhei Siamashka <siarhei.siamashka@gmail.com>
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ *  a) This file is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License as
+ *     published by the Free Software Foundation; either version 2 of the
+ *     License, or (at your option) any later version.
+ *
+ *     This file is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ * Or, alternatively,
+ *
+ *  b) Permission is hereby granted, free of charge, to any person
+ *     obtaining a copy of this software and associated documentation
+ *     files (the "Software"), to deal in the Software without
+ *     restriction, including without limitation the rights to use,
+ *     copy, modify, merge, publish, distribute, sublicense, and/or
+ *     sell copies of the Software, and to permit persons to whom the
+ *     Software is furnished to do so, subject to the following
+ *     conditions:
+ *
+ *     The above copyright notice and this permission notice shall be
+ *     included in all copies or substantial portions of the Software.
+ *
+ *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *     OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * The LinkSprite pcDuino2 board is almost identical to the older
+ * LinkSprite pcDuino1 board. The only software visible difference
+ * is that the pcDuino2 board got a USB VBUS voltage regulator, which
+ * is controlled by the PD2 pin (pulled-up by default). Also one of
+ * the USB host ports has been replaced with a USB WIFI chip.
+ */
+
+#include "sun4i-a10-pcduino.dts"
+
+/ {
+	model = "LinkSprite pcDuino2";
+	compatible = "linksprite,a10-pcduino2", "allwinner,sun4i-a10";
+};
+
+&pio {
+	usb2_vbus_pin_pcduino2: usb2_vbus_pin@0 {
+		allwinner,pins = "PD2";
+		allwinner,function = "gpio_out";
+		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+		allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+	};
+};
+
+&reg_usb2_vbus {
+	pinctrl-names = "default";
+	pinctrl-0 = <&usb2_vbus_pin_pcduino2>;
+	gpio = <&pio 3 2 GPIO_ACTIVE_HIGH>;
+	status = "okay";
+};
+
+&usbphy {
+	usb1_vbus-supply = <&reg_vcc3v3>; /* USB WIFI is always on */
+	usb2_vbus-supply = <&reg_usb2_vbus>;
+	status = "okay";
+};