arm64: allwinner: a64: Add A64-OLinuXino initial support

From: Jagan Teki <[email protected]>

OLimex A64-OLinuXino is an open-source hardware board using the Allwinner A64 SOC.

OLimex A64-OLinuXino has
- A64 Quad-core Cortex-A53 64bit
- 1GB or 2GB RAM DDR3L @ 672Mhz
- microSD slot and 4/8/16GB eMMC
- Debug TTL UART
- HDMI
- LCD
- IR receiver
- 5V DC power supply

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

---
Changes for v3:
- Droped i2c1, not found on schmatic
- Updated vddfb-cpux regulator volt range 1.04 ~ 1.3 V
- Removed poly-phased DCDC3 regulator node and added comment
- Update DLDO4 regulator name as vcc-wifi-io
- Moved uart0 below regulators
Changes for v2:
- Tested on board
- Added AXP803 regulator

 arch/arm64/boot/dts/allwinner/Makefile             |   1 +
 .../boot/dts/allwinner/sun50i-a64-olinuxino.dts    | 199 +++++++++++++++++++++
 2 files changed, 200 insertions(+)
 create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts

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

index c997b5c..19c3fbd 100644
@@ -1,5 +1,6 @@
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-bananapi-m64.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-nanopi-a64.dtb
+dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-olinuxino.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-orangepi-win.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-pine64-plus.dtb sun50i-a64-pine64.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-sopine-baseboard.dtb

arch/arm64/boot/dts/allwinner/sun50i-a64-olinuxino.dts new file +108 -0

new file mode 100644
index 0000000..b86ac1a
@@ -0,0 +1,199 @@
+/*
+ * 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.
+ */
+
+/dts-v1/;
+
+#include "sun50i-a64.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+       model = "Olimex A64-Olinuxino";
+       compatible = "olimex,a64-olinuxino", "allwinner,sun50i-a64";
+
+       aliases {
+               serial0 = &uart0;
+       };
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+};
+
+&mmc0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&mmc0_pins>;
+       vmmc-supply = <&reg_dcdc1>;
+       cd-gpios = <&pio 5 6 GPIO_ACTIVE_HIGH>;
+       cd-inverted;
+       disable-wp;
+       bus-width = <4>;
+       status = "okay";
+};
+
+&r_rsb {
+       status = "okay";
+
+       axp803: pmic at 3a3 {
+               compatible = "x-powers,axp803";
+               reg = <0x3a3>;
+               interrupt-parent = <&r_intc>;
+               interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+       };
+};
+
+#include "axp803.dtsi"
+
+&reg_aldo1 {
+       regulator-always-on;
+       regulator-min-microvolt = <2800000>;
+       regulator-max-microvolt = <2800000>;
+       regulator-name = "vcc-pe";
+};
+
+&reg_aldo2 {
+       regulator-always-on;
+       regulator-min-microvolt = <3300000>;
+       regulator-max-microvolt = <3300000>;
+       regulator-name = "vcc-pl";
+};
+
+&reg_aldo3 {
+       regulator-always-on;
+       regulator-min-microvolt = <3000000>;
+       regulator-max-microvolt = <3000000>;
+       regulator-name = "vcc-pll-avcc";
+};
+
+&reg_dcdc1 {
+       regulator-always-on;