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 = <®_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 = <®_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 = <®_dcdc1>;
99 drivevbus-supply = <®_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 ®_aldo1 {
115 regulator-always-on;
116 regulator-min-microvolt = <3000000>;
117 regulator-max-microvolt = <3000000>;
118 regulator-name = "vcc-io";
119 };
120
121 ®_aldo2 {
122 regulator-always-on;
123 regulator-min-microvolt = <2350000>;
124 regulator-max-microvolt = <2650000>;
125 regulator-name = "vdd-dll";
126 };
127
128 ®_aldo3 {
129 regulator-always-on;
130 regulator-min-microvolt = <2700000>;
131 regulator-max-microvolt = <3300000>;
132 regulator-name = "vcc-pll-avcc";
133 };
134
135 ®_dc1sw {
136 regulator-name = "vcc-lcd";
137 };
138
139 ®_dc5ldo {
140 regulator-always-on;
141 regulator-min-microvolt = <900000>;
142 regulator-max-microvolt = <1400000>;
143 regulator-name = "vdd-cpus";
144 };
145
146 ®_dcdc1 {
147 regulator-always-on;
148 regulator-min-microvolt = <3000000>;
149 regulator-max-microvolt = <3000000>;
150 regulator-name = "vcc-3v0";
151 };
152
153 ®_dcdc2 {
154 regulator-always-on;
155 regulator-min-microvolt = <900000>;
156 regulator-max-microvolt = <1400000>;
157 regulator-name = "vdd-sys";
158 };
159
160 ®_dcdc3 {
161 regulator-always-on;
162 regulator-min-microvolt = <900000>;
163 regulator-max-microvolt = <1400000>;
164 regulator-name = "vdd-cpu";
165 };
166
167 ®_dcdc5 {
168 regulator-always-on;
169 regulator-min-microvolt = <1500000>;
170 regulator-max-microvolt = <1500000>;
171 regulator-name = "vcc-dram";
172 };
173
174 ®_dldo1 {
175 regulator-min-microvolt = <3300000>;
176 regulator-max-microvolt = <3300000>;
177 regulator-name = "vcc-wifi";
178 };
179
180 ®_drivevbus {
181 regulator-name = "usb0-vbus";
182 status = "okay";
183 };
184
185 ®_ldo_io1 {
186 regulator-min-microvolt = <3300000>;
187 regulator-max-microvolt = <3300000>;
188 regulator-name = "vcc-touchscreen";
189 status = "okay";
190 };
191
192 ®_rtc_ldo {
193 regulator-name = "vcc-rtc";
194 };
195
196 &cpu0 {
197 cpu-supply = <®_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 = <®_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 = <®_drivevbus>;
223 status = "okay";
224 };
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