1/*
  2 * Copyright 2015 Hans de Goede <hdegoede@redhat.com>
  3 *
  4 * This file is dual-licensed: you can use it either under the terms
  5 * of the GPL or the X11 license, at your option. Note that this dual
  6 * licensing only applies to this file, and not this project as a
  7 * whole.
  8 *
  9 *  a) This file is free software; you can redistribute it and/or
 10 *     modify it under the terms of the GNU General Public License as
 11 *     published by the Free Software Foundation; either version 2 of the
 12 *     License, or (at your option) any later version.
 13 *
 14 *     This file is distributed in the hope that it will be useful,
 15 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 16 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 17 *     GNU General Public License for more details.
 18 *
 19 * Or, alternatively,
 20 *
 21 *  b) Permission is hereby granted, free of charge, to any person
 22 *     obtaining a copy of this software and associated documentation
 23 *     files (the "Software"), to deal in the Software without
 24 *     restriction, including without limitation the rights to use,
 25 *     copy, modify, merge, publish, distribute, sublicense, and/or
 26 *     sell copies of the Software, and to permit persons to whom the
 27 *     Software is furnished to do so, subject to the following
 28 *     conditions:
 29 *
 30 *     The above copyright notice and this permission notice shall be
 31 *     included in all copies or substantial portions of the Software.
 32 *
 33 *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 34 *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 35 *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 36 *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 37 *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 38 *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 39 *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 40 *     OTHER DEALINGS IN THE SOFTWARE.
 41 */
 42#include "sunxi-reference-design-tablet.dtsi"
 43
 44#include <dt-bindings/interrupt-controller/irq.h>
 45#include <dt-bindings/pwm/pwm.h>
 46
 47/ {
 48	aliases {
 49		serial0 = &uart1;
 50	};
 51
 52	backlight: backlight {
 53		compatible = "pwm-backlight";
 54		pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
 55		brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
 56		default-brightness-level = <8>;
 57		/* TODO: backlight uses axp gpio1 as enable pin */
 58	};
 59
 60	chosen {
 61		stdout-path = "serial0:115200n8";
 62	};
 63};
 64
 65&codec {
 66	pinctrl-names = "default";
 67	pinctrl-0 = <&codec_pa_pin>;
 68	allwinner,pa-gpios = <&pio 6 10 GPIO_ACTIVE_HIGH>; /* PG10 */
 69	status = "okay";
 70};
 71
 72&cpu0 {
 73	cpu-supply = <&reg_dcdc2>;
 74};
 75
 76&ehci0 {
 77	status = "okay";
 78};
 79
 80&i2c0 {
 81	axp209: pmic@34 {
 82		reg = <0x34>;
 83		interrupts = <0>;
 84	};
 85};
 86
 87&i2c1 {
 88	/*
 89	 * The gsl1680 is rated at 400KHz and it will not work reliable at
 90	 * 100KHz, this has been confirmed on multiple different q8 tablets.
 91	 * All other devices on this bus are also rated for 400KHz.
 92	 */
 93	clock-frequency = <400000>;
 94
 95	touchscreen: touchscreen {
 96		interrupt-parent = <&pio>;
 97		interrupts = <6 11 IRQ_TYPE_EDGE_FALLING>; /* EINT11 (PG11) */
 98		pinctrl-names = "default";
 99		pinctrl-0 = <&ts_power_pin>;
100		power-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>; /* PB3 */
101		/* Tablet dts must provide reg and compatible */
102		status = "disabled";
103	};
104
105	pcf8563: rtc@51 {
106		compatible = "nxp,pcf8563";
107		reg = <0x51>;
108	};
109};
110
111#include "axp209.dtsi"
112
113&ac_power_supply {
114	status = "okay";
115};
116
117&battery_power_supply {
118	status = "okay";
119};
120
121&lradc {
122	vref-supply = <&reg_ldo2>;
123};
124
125&mmc0 {
126	pinctrl-names = "default";
127	pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin>;
128	vmmc-supply = <&reg_vcc3v0>;
129	bus-width = <4>;
130	cd-gpios = <&pio 6 0 GPIO_ACTIVE_LOW>; /* PG0 */
131	status = "okay";
132};
133
134&otg_sram {
135	status = "okay";
136};
137
138&pio {
139	codec_pa_pin: codec_pa_pin@0 {
140		pins = "PG10";
141		function = "gpio_out";
142	};
143
144	mmc0_cd_pin: mmc0_cd_pin@0 {
145		pins = "PG0";
146		function = "gpio_in";
147		bias-pull-up;
148	};
149
150	ts_power_pin: ts_power_pin {
151		pins = "PB3";
152		function = "gpio_out";
153		drive-strength = <10>;
154		bias-disable;
155	};
156
157	usb0_vbus_detect_pin: usb0_vbus_detect_pin@0 {
158		pins = "PG1";
159		function = "gpio_in";
160		bias-pull-down;
161	};
162
163	usb0_id_detect_pin: usb0_id_detect_pin@0 {
164		pins = "PG2";
165		function = "gpio_in";
166		bias-pull-up;
167	};
168
169	usb0_vbus_pin_a: usb0_vbus_pin@0 {
170		pins = "PG12";
171		function = "gpio_out";
172	};
173};
174
175&reg_dcdc2 {
176	regulator-always-on;
177	regulator-min-microvolt = <1000000>;
178	regulator-max-microvolt = <1500000>;
179	regulator-name = "vdd-cpu";
180};
181
182&reg_dcdc3 {
183	regulator-always-on;
184	regulator-min-microvolt = <1000000>;
185	regulator-max-microvolt = <1400000>;
186	regulator-name = "vdd-int-pll";
187};
188
189&reg_ldo1 {
190	regulator-name = "vdd-rtc";
191};
192
193&reg_ldo2 {
194	regulator-always-on;
195	regulator-min-microvolt = <3000000>;
196	regulator-max-microvolt = <3000000>;
197	regulator-name = "avcc";
198};
199
200&reg_ldo3 {
201	regulator-min-microvolt = <3300000>;
202	regulator-max-microvolt = <3300000>;
203	regulator-name = "vcc-wifi";
204};
205
206&reg_usb0_vbus {
207	gpio = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
208	status = "okay";
209};
210
211&uart1 {
212	pinctrl-names = "default";
213	pinctrl-0 = <&uart1_pins_b>;
214	status = "okay";
215};
216
217&usb_otg {
218	dr_mode = "otg";
219	status = "okay";
220};
221
222&usb_power_supply {
223	status = "okay";
224};
225
226&usbphy {
227	pinctrl-names = "default";
228	pinctrl-0 = <&usb0_id_detect_pin>, <&usb0_vbus_detect_pin>;
229	usb0_id_det-gpio = <&pio 6 2 GPIO_ACTIVE_HIGH>; /* PG2 */
230	usb0_vbus_det-gpio = <&pio 6 1 GPIO_ACTIVE_HIGH>; /* PG1 */
231	usb0_vbus_power-supply = <&usb_power_supply>;
232	usb0_vbus-supply = <&reg_usb0_vbus>;
233	usb1_vbus-supply = <&reg_ldo3>;
234	status = "okay";
235};