sunxi: add support for Lichee Pi Zero

Lichee Pi Zero is a development board with a V3s SoC, which features
64MiB DRAM co-packaged within the SoC, a TF slot, a SPI NOR slot (not
soldered in production batch), a 40-pin RGB LCD connector and some extra
pins available as 2.54mm pins or stamp holes.

Add support for it.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/dts/Makefile

@@ -306,6 +306,8 @@ dtb-$(CONFIG_MACH_SUN8I_H3) += \
 	sun8i-h3-nanopi-neo-air.dtb
 dtb-$(CONFIG_MACH_SUN8I_R40) += \
 	sun8i-r40-bananapi-m2-ultra.dtb
+dtb-$(CONFIG_MACH_SUN8I_V3S) += \
+	sun8i-v3s-licheepi-zero.dtb
 dtb-$(CONFIG_MACH_SUN50I_H5) += \
 	sun50i-h5-orangepi-pc2.dtb
 dtb-$(CONFIG_MACH_SUN50I) += \

arch/arm/dts/sun8i-v3s-licheepi-zero.dts

@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2016 Icenowy Zheng <icenowy@aosc.xyz>
+ *
+ * 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.
+ */
+
+/dts-v1/;
+#include "sun8i-v3s.dtsi"
+#include "sunxi-common-regulators.dtsi"
+
+/ {
+	model = "Lichee Pi Zero";
+	compatible = "licheepi,licheepi-zero", "allwinner,sun8i-v3s";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&mmc0 {
+	pinctrl-0 = <&mmc0_pins_a>;
+	pinctrl-names = "default";
+	broken-cd;
+	bus-width = <4>;
+	vmmc-supply = <&reg_vcc3v3>;
+	status = "okay";
+};
+
+&uart0 {
+	pinctrl-0 = <&uart0_pins_a>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&usb_otg {
+	dr_mode = "otg";
+	status = "okay";
+};
+
+&usbphy {
+	usb0_id_det-gpio = <&pio 5 6 GPIO_ACTIVE_HIGH>;
+	status = "okay";
+};

board/sunxi/MAINTAINERS

@@ -188,6 +188,11 @@ M:	Jelle de Jong <jelledejong@powercraft.nl>
 S:	Maintained
 F:	configs/Lamobo_R1_defconfig
 
+LICHEEPI-ZERO BOARD
+M:	Icenowy Zheng <icenowy@aosc.xyz>
+S:	Maintained
+F:	configs/LicheePi_Zero_defconfig
+
 LINKSPRITE-PCDUINO BOARD
 M:	Zoltan Herpai <wigyori@uid0.hu>
 S:	Maintained

configs/LicheePi_Zero_defconfig

@@ -0,0 +1,12 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_MACH_SUN8I_V3S=y
+CONFIG_DRAM_CLK=360
+CONFIG_DRAM_ZQ=14779
+CONFIG_DEFAULT_DEVICE_TREE="sun8i-v3s-licheepi-zero"
+# CONFIG_CONSOLE_MUX is not set
+CONFIG_SPL=y
+# CONFIG_CMD_IMLS is not set
+# CONFIG_CMD_FLASH is not set
+# CONFIG_CMD_FPGA is not set
+# CONFIG_NETDEVICES is not set