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/pwm/pwm.h>
 45
 46/ {
 47	aliases {
 48		serial0 = &r_uart;
 49	};
 50
 51	backlight: backlight {
 52		compatible = "pwm-backlight";
 53		pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
 54		brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
 55		default-brightness-level = <8>;
 56		enable-gpios = <&pio 7 6 GPIO_ACTIVE_HIGH>; /* PH6 */
 57		power-supply = <&reg_dc1sw>;
 58	};
 59
 60	chosen {
 61		stdout-path = "serial0:115200n8";
 62	};
 63};
 64
 65&i2c0 {
 66	/*
 67	 * The gsl1680 is rated at 400KHz and it will not work reliable at
 68	 * 100KHz, this has been confirmed on multiple different q8 tablets.
 69	 * The gsl1680 is the only device on this bus.
 70	 */
 71	clock-frequency = <400000>;
 72
 73	touchscreen: touchscreen@40 {
 74		reg = <0x40>;
 75		interrupt-parent = <&pio>;
 76		interrupts = <1 5 IRQ_TYPE_EDGE_FALLING>; /* PB5 */
 77		power-gpios = <&pio 7 1 GPIO_ACTIVE_HIGH>; /* PH1 */
 78		/* Tablet dts must provide reg and compatible */
 79		status = "disabled";
 80	};
 81};
 82
 83&mmc0 {
 84	vmmc-supply = <&reg_dcdc1>;
 85	bus-width = <4>;
 86	cd-gpios = <&pio 1 4 GPIO_ACTIVE_LOW>; /* PB4 */
 87	status = "okay";
 88};
 89
 90&r_rsb {
 91	status = "okay";
 92
 93	axp22x: pmic@3a3 {
 94		compatible = "x-powers,axp223";
 95		reg = <0x3a3>;
 96		interrupt-parent = <&r_intc>;
 97		interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_LOW>;
 98		eldoin-supply = <&reg_dcdc1>;
 99		drivevbus-supply = <&reg_vcc5v0>;
100		x-powers,drive-vbus-en;
101	};
102};
103
104#include "axp223.dtsi"
105
106&ac_power_supply {
107	status = "okay";
108};
109
110&battery_power_supply {
111	status = "okay";
112};
113
114&reg_aldo1 {
115	regulator-always-on;
116	regulator-min-microvolt = <3000000>;
117	regulator-max-microvolt = <3000000>;
118	regulator-name = "vcc-io";
119};
120
121&reg_aldo2 {
122	regulator-always-on;
123	regulator-min-microvolt = <2350000>;
124	regulator-max-microvolt = <2650000>;
125	regulator-name = "vdd-dll";
126};
127
128&reg_aldo3 {
129	regulator-always-on;
130	regulator-min-microvolt = <2700000>;
131	regulator-max-microvolt = <3300000>;
132	regulator-name = "vcc-pll-avcc";
133};
134
135&reg_dc1sw {
136	regulator-name = "vcc-lcd";
137};
138
139&reg_dc5ldo {
140	regulator-always-on;
141	regulator-min-microvolt = <900000>;
142	regulator-max-microvolt = <1400000>;
143	regulator-name = "vdd-cpus";
144};
145
146&reg_dcdc1 {
147	regulator-always-on;
148	regulator-min-microvolt = <3000000>;
149	regulator-max-microvolt = <3000000>;
150	regulator-name = "vcc-3v0";
151};
152
153&reg_dcdc2 {
154	regulator-always-on;
155	regulator-min-microvolt = <900000>;
156	regulator-max-microvolt = <1400000>;
157	regulator-name = "vdd-sys";
158};
159
160&reg_dcdc3 {
161	regulator-always-on;
162	regulator-min-microvolt = <900000>;
163	regulator-max-microvolt = <1400000>;
164	regulator-name = "vdd-cpu";
165};
166
167&reg_dcdc5 {
168	regulator-always-on;
169	regulator-min-microvolt = <1500000>;
170	regulator-max-microvolt = <1500000>;
171	regulator-name = "vcc-dram";
172};
173
174&reg_dldo1 {
175	regulator-min-microvolt = <3300000>;
176	regulator-max-microvolt = <3300000>;
177	regulator-name = "vcc-wifi";
178};
179
180&reg_drivevbus {
181	regulator-name = "usb0-vbus";
182	status = "okay";
183};
184
185&reg_ldo_io1 {
186	regulator-min-microvolt = <3300000>;
187	regulator-max-microvolt = <3300000>;
188	regulator-name = "vcc-touchscreen";
189	status = "okay";
190};
191
192&reg_rtc_ldo {
193	regulator-name = "vcc-rtc";
194};
195
196&cpu0 {
197	cpu-supply = <&reg_dcdc2>;
198};
199
200&r_uart {
201	pinctrl-names = "default";
202	pinctrl-0 = <&r_uart_pins_a>;
203	status = "okay";
204};
205
206&simplefb_lcd {
207	vcc-lcd-supply = <&reg_dc1sw>;
208};
209
210&usb_otg {
211	dr_mode = "otg";
212	status = "okay";
213};
214
215&usb_power_supply {
216	status = "okay";
217};
218
219&usbphy {
220	usb0_id_det-gpios = <&pio 7 8 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>; /* PH8 */
221	usb0_vbus_power-supply = <&usb_power_supply>;
222	usb0_vbus-supply = <&reg_drivevbus>;
223	status = "okay";
224};