sun50i: h5: Add initial NanoPi NEO2 support

NanoPi NEO2 is designed and developed by FriendlyElec
using the Allwinner 64-bit H5 SOC.

NanoPi Neo2 key features
- Allwinner H5, Quad-core 64-bit Cortex-A53
- 512MB DDR3 RAM
- microSD slot
- 10/100/1000M Ethernet
- Serial Debug Port
- 5V 2A DC MicroUSB power-supply

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com>

arch/arm/dts/Makefile

@@ -319,6 +319,7 @@ dtb-$(CONFIG_MACH_SUN8I_R40) += \
 dtb-$(CONFIG_MACH_SUN8I_V3S) += \
 	sun8i-v3s-licheepi-zero.dtb
 dtb-$(CONFIG_MACH_SUN50I_H5) += \
+	sun50i-h5-nanopi-neo2.dtb \
 	sun50i-h5-orangepi-pc2.dtb \
 	sun50i-h5-orangepi-prime.dtb \
 	sun50i-h5-orangepi-zero-plus2.dtb

arch/arm/dts/sun50i-h5-nanopi-neo2.dts

@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io>
+ * Copyright (C) 2017 Jagan Teki <jteki@openedev.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 library 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 library 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 "sun50i-h5.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	model = "FriendlyARM NanoPi NEO 2";
+	compatible = "friendlyarm,nanopi-neo2", "allwinner,sun50i-h5";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	reg_vcc3v3: vcc3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+};
+
+&mmc0 {
+	compatible = "allwinner,sun50i-h5-mmc",
+		     "allwinner,sun50i-a64-mmc",
+		     "allwinner,sun5i-a13-mmc";
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin>;
+	vmmc-supply = <&reg_vcc3v3>;
+	bus-width = <4>;
+	cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>; /* PF6 */
+	status = "okay";
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pins_a>;
+	status = "okay";
+};

board/sunxi/MAINTAINERS

@@ -257,6 +257,11 @@ M:	Jelle van der Waa <jelle@vdwaa.nl>
 S:	Maintained
 F:	configs/nanopi_neo_defconfig
 
+NANOPI-NEO2 BOARD
+M:	Jagan Teki <jagan@amarulasolutions.com>
+S:	Maintained
+F:	configs/nanopi_neo2_defconfig
+
 NANOPI-NEO-AIR BOARD
 M:	Jelle van der Waa <jelle@vdwaa.nl>
 S:	Maintained

configs/nanopi_neo2_defconfig

@@ -0,0 +1,16 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_MACH_SUN50I_H5=y
+CONFIG_DRAM_CLK=672
+CONFIG_DRAM_ZQ=3881977
+CONFIG_DEFAULT_DEVICE_TREE="sun50i-h5-nanopi-neo2"
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT 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_SPL_DOS_PARTITION is not set
+# CONFIG_SPL_ISO_PARTITION is not set
+# CONFIG_SPL_EFI_PARTITION is not set
+CONFIG_SUN8I_EMAC=y
+CONFIG_USB_EHCI_HCD=y