/*
   * Copyright 2015 Hans de Goede <hdegoede@redhat.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 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.
   */
  #include "sunxi-reference-design-tablet.dtsi"

  #include <dt-bindings/interrupt-controller/irq.h>

  #include <dt-bindings/pwm/pwm.h>
  
  / {
  	aliases {
  		serial0 = &uart1;
  	};
  
  	backlight: backlight {
  		compatible = "pwm-backlight";
  		pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
  		brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
  		default-brightness-level = <8>;
  		/* TODO: backlight uses axp gpio1 as enable pin */
  	};
  
  	chosen {
  		stdout-path = "serial0:115200n8";
  	};
  };
  
  &codec {
  	pinctrl-names = "default";
  	pinctrl-0 = <&codec_pa_pin>;
  	allwinner,pa-gpios = <&pio 6 10 GPIO_ACTIVE_HIGH>; /* PG10 */
  	status = "okay";
  };
  
  &cpu0 {
  	cpu-supply = <&reg_dcdc2>;
  };
  
  &ehci0 {
  	status = "okay";
  };
  
  &i2c0 {
  	axp209: pmic@34 {
  		reg = <0x34>;
  		interrupts = <0>;
  	};
  };
  
  &i2c1 {

  	/*
  	 * The gsl1680 is rated at 400KHz and it will not work reliable at
  	 * 100KHz, this has been confirmed on multiple different q8 tablets.
  	 * All other devices on this bus are also rated for 400KHz.
  	 */
  	clock-frequency = <400000>;
  
  	touchscreen: touchscreen {
  		interrupt-parent = <&pio>;
  		interrupts = <6 11 IRQ_TYPE_EDGE_FALLING>; /* EINT11 (PG11) */
  		pinctrl-names = "default";
  		pinctrl-0 = <&ts_power_pin>;
  		power-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>; /* PB3 */
  		/* Tablet dts must provide reg and compatible */
  		status = "disabled";
  	};

  	pcf8563: rtc@51 {
  		compatible = "nxp,pcf8563";
  		reg = <0x51>;
  	};
  };
  
  #include "axp209.dtsi"

  &ac_power_supply {
  	status = "okay";
  };
  
  &battery_power_supply {
  	status = "okay";
  };

  &lradc {
  	vref-supply = <&reg_ldo2>;
  };
  
  &mmc0 {
  	pinctrl-names = "default";
  	pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin>;
  	vmmc-supply = <&reg_vcc3v0>;
  	bus-width = <4>;

  	cd-gpios = <&pio 6 0 GPIO_ACTIVE_LOW>; /* PG0 */

  	status = "okay";
  };
  
  &otg_sram {
  	status = "okay";
  };
  
  &pio {
  	codec_pa_pin: codec_pa_pin@0 {

  		pins = "PG10";
  		function = "gpio_out";

  	};
  
  	mmc0_cd_pin: mmc0_cd_pin@0 {

  		pins = "PG0";
  		function = "gpio_in";
  		bias-pull-up;
  	};
  
  	ts_power_pin: ts_power_pin {
  		pins = "PB3";
  		function = "gpio_out";
  		drive-strength = <10>;
  		bias-disable;

  	};
  
  	usb0_vbus_detect_pin: usb0_vbus_detect_pin@0 {

  		pins = "PG1";
  		function = "gpio_in";
  		bias-pull-down;

  	};
  
  	usb0_id_detect_pin: usb0_id_detect_pin@0 {

  		pins = "PG2";
  		function = "gpio_in";
  		bias-pull-up;

  	};
  
  	usb0_vbus_pin_a: usb0_vbus_pin@0 {

  		pins = "PG12";
  		function = "gpio_out";

  	};
  };
  
  &reg_dcdc2 {
  	regulator-always-on;
  	regulator-min-microvolt = <1000000>;
  	regulator-max-microvolt = <1500000>;
  	regulator-name = "vdd-cpu";
  };
  
  &reg_dcdc3 {
  	regulator-always-on;
  	regulator-min-microvolt = <1000000>;
  	regulator-max-microvolt = <1400000>;
  	regulator-name = "vdd-int-pll";
  };
  
  &reg_ldo1 {
  	regulator-name = "vdd-rtc";
  };
  
  &reg_ldo2 {
  	regulator-always-on;
  	regulator-min-microvolt = <3000000>;
  	regulator-max-microvolt = <3000000>;
  	regulator-name = "avcc";
  };
  
  &reg_ldo3 {
  	regulator-min-microvolt = <3300000>;
  	regulator-max-microvolt = <3300000>;
  	regulator-name = "vcc-wifi";
  };
  
  &reg_usb0_vbus {
  	gpio = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
  	status = "okay";
  };
  
  &uart1 {
  	pinctrl-names = "default";
  	pinctrl-0 = <&uart1_pins_b>;
  	status = "okay";
  };
  
  &usb_otg {
  	dr_mode = "otg";
  	status = "okay";
  };
  
  &usb_power_supply {
  	status = "okay";
  };
  
  &usbphy {
  	pinctrl-names = "default";
  	pinctrl-0 = <&usb0_id_detect_pin>, <&usb0_vbus_detect_pin>;
  	usb0_id_det-gpio = <&pio 6 2 GPIO_ACTIVE_HIGH>; /* PG2 */
  	usb0_vbus_det-gpio = <&pio 6 1 GPIO_ACTIVE_HIGH>; /* PG1 */
  	usb0_vbus_power-supply = <&usb_power_supply>;
  	usb0_vbus-supply = <&reg_usb0_vbus>;
  	usb1_vbus-supply = <&reg_ldo3>;
  	status = "okay";
  };