[PATCH 3/3] ARM: dts: sun7i: Add support for the Ainol AW1 tablet

[Paul Kocialkowski <contact@paulk.fr>]

This adds support for the Ainol AW1, an A20-based 7" tablet from Ainol.

The following board-specific features are supported:
* LCD panel
* Backlight
* USB OTG
* Buttons
* Touchscreen (doesn't work without non-free firmware)
* Accelerometer
* Battery

The following are untested:
* Audio output
* Audio speakers
* USB via SPCI connector

The following are not supported:
* Wi-Fi
* Bluetooth
* NAND
* Audio via SPCI connector

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
---
 arch/arm/boot/dts/Makefile                |   1 +
 arch/arm/boot/dts/sun7i-a20-ainol-aw1.dts | 358 ++++++++++++++++++++++++++++++
 2 files changed, 359 insertions(+)
 create mode 100644 arch/arm/boot/dts/sun7i-a20-ainol-aw1.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 9f7133b6fba0..03bfacebfdbd 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -929,6 +929,7 @@ dtb-$(CONFIG_MACH_SUN6I) += \
 	sun6i-a31s-sinovoip-bpi-m2.dtb \
 	sun6i-a31s-yones-toptech-bs1078-v2.dtb
 dtb-$(CONFIG_MACH_SUN7I) += \
+	sun7i-a20-ainol-aw1.dtb \
 	sun7i-a20-bananapi.dtb \
 	sun7i-a20-bananapi-m1-plus.dtb \
 	sun7i-a20-bananapro.dtb \
diff --git a/arch/arm/boot/dts/sun7i-a20-ainol-aw1.dts b/arch/arm/boot/dts/sun7i-a20-ainol-aw1.dts
new file mode 100644
index 000000000000..697586991aea
--- /dev/null
+++ b/arch/arm/boot/dts/sun7i-a20-ainol-aw1.dts
@@ -0,0 +1,358 @@
+/*
+ * Copyright 2018 Paul Kocialkowski <contact@paulk.fr>
+ *
+ * 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 "sun7i-a20.dtsi"
+#include "sunxi-common-regulators.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/pwm/pwm.h>
+
+/ {
+	model = "Ainol AW1";
+	compatible = "ainol,ainol-aw1", "allwinner,sun7i-a20";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		pinctrl-names = "default";
+		pinctrl-0 = <&backlight_enable_pin>;
+		pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
+		brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
+		default-brightness-level = <5>;
+		enable-gpios = <&pio 7 7 GPIO_ACTIVE_HIGH>; /* PH7 */
+	};
+
+	panel: panel {
+		compatible = "innolux,at070tn92";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		power-supply = <&panel_power>;
+		backlight = <&backlight>;
+
+		port@0 {
+			reg = <0>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			panel_input: endpoint@0 {
+				reg = <0>;
+				remote-endpoint = <&tcon0_out_panel>;
+			};
+		};
+	};
+
+	panel_power: panel_power {
+		compatible = "regulator-fixed";
+		pinctrl-names = "default";
+		pinctrl-0 = <&panel_power_pin>;
+		regulator-name = "panel-power";
+		regulator-min-microvolt = <10400000>;
+		regulator-max-microvolt = <10400000>;
+		gpio = <&pio 7 8 GPIO_ACTIVE_HIGH>; /* PH8 */
+		enable-active-high;
+		regulator-boot-on;
+	};
+};
+
+&codec {
+	pinctrl-names = "default";
+	pinctrl-0 = <&codec_pa_pin>;
+	allwinner,pa-gpios = <&pio 7 15 GPIO_ACTIVE_HIGH>; /* PH15 */
+	status = "okay";
+};
+
+&cpu0 {
+	cpu-supply = <&reg_dcdc2>;
+};
+
+&de {
+	status = "okay";
+};
+
+&ehci0 {
+	status = "okay";
+};
+
+&ehci1 {
+	status = "okay";
+};
+
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins_a>;
+	status = "okay";
+
+	axp209: pmic@34 {
+		reg = <0x34>;
+		interrupt-parent = <&nmi_intc>;
+		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+	};
+};
+
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins_a>;
+	status = "okay";
+
+	lis3dh: accelerometer@18 {
+		compatible = "st,lis3dh-accel";
+		reg = <0x18>;
+		vdd-supply = <&reg_vcc3v3>;
+		vddio-supply = <&reg_vcc3v3>;
+		st,drdy-int-pin = <1>;
+	};
+};
+
+&i2c2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c2_pins_a>;
+	status = "okay";
+	clock-frequency = <400000>; /* 400 KHz required for GSL1680. */
+
+	gsl1680: touchscreen@40 {
+		compatible = "silead,gsl1680";
+		reg = <0x40>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&touchscreen_power_pin>;
+		interrupt-parent = <&pio>;
+		interrupts = <7 21 IRQ_TYPE_EDGE_FALLING>; /* EINT21 (PH21) */
+		power-gpios = <&pio 7 20 GPIO_ACTIVE_HIGH>; /* PH20 */
+		firmware-name = "gsl1680-ainol-aw1.fw";
+		touchscreen-size-x = <480>;
+		touchscreen-size-y = <800>;
+		touchscreen-swapped-x-y;
+		touchscreen-inverted-y;
+		silead,max-fingers = <5>;
+	};
+};
+
+&lradc {
+	vref-supply = <&reg_vcc3v0>;
+	status = "okay";
+
+	button@571 {
+		label = "Volume Up";
+		linux,code = <KEY_VOLUMEUP>;
+		channel = <0>;
+		voltage = <571428>;
+	};
+
+	button@761 {
+		label = "Volume Down";
+		linux,code = <KEY_VOLUMEDOWN>;
+		channel = <0>;
+		voltage = <761904>;
+	};
+
+	button@952 {
+		label = "Home";
+		linux,code = <KEY_HOME>;
+		channel = <0>;
+		voltage = <952380>;
+	};
+};
+
+&mmc0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc0_pins_a>;
+	vmmc-supply = <&reg_vcc3v3>;
+	bus-width = <4>;
+	cd-gpios = <&pio 7 1 GPIO_ACTIVE_HIGH>; /* PH1 */
+	cd-inverted;
+	status = "okay";
+};
+
+&ohci0 {
+	status = "okay";
+};
+
+&ohci1 {
+	status = "okay";
+};
+
+&otg_sram {
+	status = "okay";
+};
+
+&pio {
+	panel_power_pin: panel_power_pin@0 {
+		pins = "PH8";
+		function = "gpio_out";
+	};
+
+	backlight_enable_pin: backlight_enable_pin@0 {
+		pins = "PH7";
+		function = "gpio_out";
+	};
+
+	touchscreen_power_pin: touchscreen_power_pin@0 {
+		pins = "PH20";
+		function = "gpio_out";
+	};
+
+	codec_pa_pin: codec_pa_pin@0 {
+		pins = "PH15";
+		function = "gpio_out";
+	};
+
+	usb0_id_detect_pin: usb0_id_detect_pin@0 {
+		pins = "PH4";
+		function = "gpio_in";
+		bias-pull-up;
+	};
+
+	usb0_vbus_pin: usb0_vbus_pin@0 {
+		pins = "PB9";
+		function = "gpio_out";
+	};
+
+	usb1_vbus_pin: usb1_vbus_pin@0 {
+		pins = "PH6";
+		function = "gpio_out";
+	};
+
+	usb2_vbus_pin: usb2_vbus_pin@0 {
+		pins = "PH3";
+		function = "gpio_out";
+	};
+};
+
+&pwm {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm0_pins_a>;
+	status = "okay";
+};
+
+&tcon0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&lcd_rgb666_pins>;
+	status = "okay";
+};
+
+&tcon0_out {
+	tcon0_out_panel: endpoint@0 {
+		reg = <0>;
+		remote-endpoint = <&panel_input>;
+	};
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pins_a>;
+	status = "okay";
+};
+
+&usb_otg {
+	dr_mode = "otg";
+	status = "okay";
+};
+
+&usbphy {
+	pinctrl-names = "default";
+	pinctrl-0 = <&usb0_id_detect_pin>;
+	usb0_id_det-gpio = <&pio 7 4 GPIO_ACTIVE_HIGH>; /* PH4 */
+	usb0_vbus_power-supply = <&usb_power_supply>;
+	usb0_vbus-supply = <&reg_usb0_vbus>;
+	usb1_vbus-supply = <&reg_usb1_vbus>;
+	usb2_vbus-supply = <&reg_usb2_vbus>;
+	status = "okay";
+};
+
+#include "axp209.dtsi"
+
+&battery_power_supply {
+	status = "okay";
+};
+
+&reg_dcdc2 {
+	regulator-always-on;
+	regulator-min-microvolt = <1000000>;
+	regulator-max-microvolt = <1450000>;
+	regulator-name = "vdd-cpu";
+};
+
+&reg_dcdc3 {
+	regulator-always-on;
+	regulator-min-microvolt = <1000000>;
+	regulator-max-microvolt = <1400000>;
+	regulator-name = "vdd-int-dll";
+};
+
+&reg_ldo1 {
+	regulator-name = "vdd-rtc";
+};
+
+&reg_ldo2 {
+	regulator-always-on;
+	regulator-min-microvolt = <3000000>;
+	regulator-max-microvolt = <3000000>;
+	regulator-name = "avcc";
+};
+
+&reg_usb0_vbus {
+	pinctrl-0 = <&usb0_vbus_pin>;
+	status = "okay";
+};
+
+&reg_usb1_vbus {
+	pinctrl-0 = <&usb1_vbus_pin>;
+	status = "okay";
+};
+
+&reg_usb2_vbus {
+	pinctrl-0 = <&usb2_vbus_pin>;
+	status = "okay";
+};
+
+&usb_power_supply {
+	status = "okay";
+};
-- 
2.16.3