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