arm64: allwinner: h5: Add initial NanoPi NEO2 support

From: Jagan Teki <[email protected]>

NanoPi M1 Plus is designed and developed by FriendlyElec for professionals, enterprise users, makers and hobbyists using the Allwinner H3 SOC.

NanoPi M1 Plus key features
- Allwinner H3, Quad-core Cortex-A7 at 1.2GHz
- 1GB DDR3 RAM
- 8GB eMMC
- microSD slot
- 10/100/1000M Ethernet
- Serial Debug Port
- 5V 2A DC power-supply

Signed-off-by Jagan Teki <[email protected]>

From: Jagan Teki <[email protected]>

NanoPi M1 Plus 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 <[email protected]>

---
 arch/arm64/boot/dts/allwinner/Makefile             |  1 +
 .../boot/dts/allwinner/sun50i-h5-nanopi-neo2.dts   | 92 
++++++++++++++++++++++
 2 files changed, 93 insertions(+)
 create mode 100644 

arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo2.dts

arch/arm64/boot/dts/allwinner/Makefile +0 -0

index c1dd6e4..8d50907 100644
@@ -2,6 +2,7 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-bananapi-m64.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-nanopi-a64.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-pine64-plus.dtb 

sun50i-a64-pine64.dtb
dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-orangepi-win.dtb

arch/arm64/boot/dts/allwinner/Makefile +1 -0

+dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-nanopi-neo2.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-orangepi-pc2.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-orangepi-prime.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-orangepi-zero-plus2.dtb

arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo2.dts new file +11 -0

new file mode 100644
index 0000000..c28779f
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2017 Jagan Teki <[email protected]>
+ *
+ * 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.

+ */

arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo2.dts new file +51 -0

+
+/dts-v1/;
+
+#include "sun50i-h5.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	model = "FriendlyARM NanoPi NEO2";
+	compatible = "friendlyarm,nanopi-neo2", "allwinner,sun50i-h5";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory {
+		reg = <0x40000000 0x20000000>;
+	};
+
+	soc {
+		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_HIGH>;
+	cd-inverted;
+	status = "okay";
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pins_a>;
+	status = "okay";
+};