arm64: allwinner: add BananaPi-M64 support

The Banana Pi M64 board is a typical single board computer based on the
Allwinner A64 SoC. Aside from the usual peripherals it features eMMC
storage, which is connected to the 8-bit capable SDHC2 controller.
Also it has a soldered WiFi/Bluetooth chip, so we enable UART1 and SDHC1
as those two interfaces are connected to it.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>

2 files changed, 121 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
index 1e29a5ae8282..bc6f342be59f 100644
--- a/arch/arm64/boot/dts/allwinner/Makefile
+++ b/arch/arm64/boot/dts/allwinner/Makefile
@@ -1,3 +1,4 @@
+dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-bananapi-m64.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-pine64-plus.dtb sun50i-a64-pine64.dtb
 
 always          := $(dtb-y)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts
new file mode 100644
index 000000000000..6872135d7f84
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2016 ARM Ltd.
+ *
+ * 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 = "BananaPi-M64";
+        compatible = "sinovoip,bananapi-m64", "allwinner,sun50i-a64";
+
+        aliases {
+                serial0 = &uart0;
+                serial1 = &uart1;
+        };
+
+        chosen {
+                stdout-path = "serial0:115200n8";
+        };
+
+        reg_vcc3v3: vcc3v3 {
+                compatible = "regulator-fixed";
+                regulator-name = "vcc3v3";
+                regulator-min-microvolt = <3300000>;
+                regulator-max-microvolt = <3300000>;
+        };
+};
+
+&i2c1 {
+        pinctrl-names = "default";
+        pinctrl-0 = <&i2c1_pins>;
+        status = "okay";
+};
+
+&i2c1_pins {
+        bias-pull-up;
+};
+
+&mmc0 {
+        pinctrl-names = "default";
+        pinctrl-0 = <&mmc0_pins>;
+        vmmc-supply = <&reg_vcc3v3>;
+        cd-gpios = <&pio 5 6 GPIO_ACTIVE_HIGH>;
+        cd-inverted;
+        disable-wp;
+        bus-width = <4>;
+        status = "okay";
+};
+
+&mmc1 {
+        pinctrl-names = "default";
+        pinctrl-0 = <&mmc1_pins>;
+        vmmc-supply = <&reg_vcc3v3>;
+        bus-width = <4>;
+        non-removable;
+        status = "okay";
+};
+
+&mmc2 {
+        pinctrl-names = "default";
+        pinctrl-0 = <&mmc2_pins>;
+        vmmc-supply = <&reg_vcc3v3>;
+        bus-width = <8>;
+        non-removable;
+        cap-mmc-hw-reset;
+        status = "okay";
+};
+
+&uart0 {
+        pinctrl-names = "default";
+        pinctrl-0 = <&uart0_pins_a>;
+        status = "okay";
+};
+
+&uart1 {
+        pinctrl-names = "default";
+        pinctrl-0 = <&uart1_pins>, <&uart1_rts_cts_pins>;
+        status = "okay";
+};