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@0 {
 73		interrupt-parent = <&pio>;
 74		interrupts = <1 5 IRQ_TYPE_EDGE_FALLING>; /* PB5 */
 75		pinctrl-names = "default";
 76		pinctrl-0 = <&ts_power_pin>;
 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	pinctrl-names = "default";
 85	pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin>;
 86	vmmc-supply = <&reg_dcdc1>;
 87	bus-width = <4>;
 88	cd-gpios = <&pio 1 4 GPIO_ACTIVE_LOW>; /* PB4 */
 89	status = "okay";
 90};
 91
 92&pio {
 93	mmc0_cd_pin: mmc0_cd_pin@0 {
 94		pins = "PB4";
 95		function = "gpio_in";
 96		bias-pull-up;
 97	};
 98
 99	ts_power_pin: ts_power_pin@0 {
100		pins = "PH1";
101		function = "gpio_out";
102	};
103
104	usb0_id_detect_pin: usb0_id_detect_pin@0 {
105		pins = "PH8";
106		function = "gpio_in";
107		bias-pull-up;
108	};
109};
110
111&r_rsb {
112	status = "okay";
113
114	axp22x: pmic@3a3 {
115		compatible = "x-powers,axp223";
116		reg = <0x3a3>;
117		interrupt-parent = <&nmi_intc>;
118		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
119		eldoin-supply = <&reg_dcdc1>;
120		drivevbus-supply = <&reg_vcc5v0>;
121		x-powers,drive-vbus-en;
122	};
123};
124
125#include "axp223.dtsi"
126
127&ac_power_supply {
128	status = "okay";
129};
130
131&battery_power_supply {
132	status = "okay";
133};
134
135&reg_aldo1 {
136	regulator-always-on;
137	regulator-min-microvolt = <3000000>;
138	regulator-max-microvolt = <3000000>;
139	regulator-name = "vcc-io";
140};
141
142&reg_aldo2 {
143	regulator-always-on;
144	regulator-min-microvolt = <2350000>;
145	regulator-max-microvolt = <2650000>;
146	regulator-name = "vdd-dll";
147};
148
149&reg_aldo3 {
150	regulator-always-on;
151	regulator-min-microvolt = <2700000>;
152	regulator-max-microvolt = <3300000>;
153	regulator-name = "vcc-pll-avcc";
154};
155
156&reg_dc1sw {
157	regulator-name = "vcc-lcd";
158};
159
160&reg_dc5ldo {
161	regulator-always-on;
162	regulator-min-microvolt = <900000>;
163	regulator-max-microvolt = <1400000>;
164	regulator-name = "vdd-cpus";
165};
166
167&reg_dcdc1 {
168	regulator-always-on;
169	regulator-min-microvolt = <3000000>;
170	regulator-max-microvolt = <3000000>;
171	regulator-name = "vcc-3v0";
172};
173
174&reg_dcdc2 {
175	regulator-always-on;
176	regulator-min-microvolt = <900000>;
177	regulator-max-microvolt = <1400000>;
178	regulator-name = "vdd-sys";
179};
180
181&reg_dcdc3 {
182	regulator-always-on;
183	regulator-min-microvolt = <900000>;
184	regulator-max-microvolt = <1400000>;
185	regulator-name = "vdd-cpu";
186};
187
188&reg_dcdc5 {
189	regulator-always-on;
190	regulator-min-microvolt = <1500000>;
191	regulator-max-microvolt = <1500000>;
192	regulator-name = "vcc-dram";
193};
194
195&reg_dldo1 {
196	regulator-min-microvolt = <3300000>;
197	regulator-max-microvolt = <3300000>;
198	regulator-name = "vcc-wifi";
199};
200
201&reg_drivevbus {
202	regulator-name = "usb0-vbus";
203	status = "okay";
204};
205
206&reg_ldo_io1 {
207	regulator-min-microvolt = <3300000>;
208	regulator-max-microvolt = <3300000>;
209	regulator-name = "vcc-touchscreen";
210	status = "okay";
211};
212
213&reg_rtc_ldo {
214	regulator-name = "vcc-rtc";
215};
216
217&cpu0 {
218	cpu-supply = <&reg_dcdc2>;
219};
220
221&r_uart {
222	pinctrl-names = "default";
223	pinctrl-0 = <&r_uart_pins_a>;
224	status = "okay";
225};
226
227&simplefb_lcd {
228	vcc-lcd-supply = <&reg_dc1sw>;
229};
230
231&usb_otg {
232	dr_mode = "otg";
233	status = "okay";
234};
235
236&usb_power_supply {
237	status = "okay";
238};
239
240&usbphy {
241	pinctrl-names = "default";
242	pinctrl-0 = <&usb0_id_detect_pin>;
243	usb0_id_det-gpio = <&pio 7 8 GPIO_ACTIVE_HIGH>; /* PH8 */
244	usb0_vbus_power-supply = <&usb_power_supply>;
245	usb0_vbus-supply = <&reg_drivevbus>;
246	status = "okay";
247};