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};
225