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/interrupt-controller/irq.h>
45 #include <dt-bindings/pwm/pwm.h>
46
47 / {
48 aliases {
49 serial0 = &uart1;
50 };
51
52 backlight: backlight {
53 compatible = "pwm-backlight";
54 pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
55 brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
56 default-brightness-level = <8>;
57 enable-gpios = <&axp_gpio 1 GPIO_ACTIVE_HIGH>; /* AXP GPIO1 */
58 power-supply = <®_vcc3v0>;
59 };
60
61 chosen {
62 stdout-path = "serial0:115200n8";
63 };
64 };
65
66 &codec {
67 allwinner,pa-gpios = <&pio 6 10 GPIO_ACTIVE_HIGH>; /* PG10 */
68 status = "okay";
69 };
70
71 &cpu0 {
72 cpu-supply = <®_dcdc2>;
73 };
74
75 &ehci0 {
76 status = "okay";
77 };
78
79 &i2c0 {
80 axp209: pmic@34 {
81 reg = <0x34>;
82 interrupts = <0>;
83 };
84 };
85
86 &i2c1 {
87 /*
88 * The gsl1680 is rated at 400KHz and it will not work reliable at
89 * 100KHz, this has been confirmed on multiple different q8 tablets.
90 * All other devices on this bus are also rated for 400KHz.
91 */
92 clock-frequency = <400000>;
93
94 touchscreen: touchscreen@40 {
95 reg = <0x40>;
96 interrupt-parent = <&pio>;
97 interrupts = <6 11 IRQ_TYPE_EDGE_FALLING>; /* EINT11 (PG11) */
98 power-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>; /* PB3 */
99 /* Tablet dts must provide reg and compatible */
100 status = "disabled";
101 };
102
103 pcf8563: rtc@51 {
104 compatible = "nxp,pcf8563";
105 reg = <0x51>;
106 };
107 };
108
109 #include "axp209.dtsi"
110
111 &ac_power_supply {
112 status = "okay";
113 };
114
115 &battery_power_supply {
116 status = "okay";
117 };
118
119 &lradc {
120 vref-supply = <®_ldo2>;
121 };
122
123 &mmc0 {
124 pinctrl-names = "default";
125 pinctrl-0 = <&mmc0_pins>;
126 vmmc-supply = <®_vcc3v0>;
127 bus-width = <4>;
128 cd-gpios = <&pio 6 0 GPIO_ACTIVE_LOW>; /* PG0 */
129 status = "okay";
130 };
131
132 &otg_sram {
133 status = "okay";
134 };
135
136 ®_dcdc2 {
137 regulator-always-on;
138 regulator-min-microvolt = <1000000>;
139 regulator-max-microvolt = <1500000>;
140 regulator-name = "vdd-cpu";
141 };
142
143 ®_dcdc3 {
144 regulator-always-on;
145 regulator-min-microvolt = <1000000>;
146 regulator-max-microvolt = <1400000>;
147 regulator-name = "vdd-int-pll";
148 };
149
150 ®_ldo1 {
151 regulator-name = "vdd-rtc";
152 };
153
154 ®_ldo2 {
155 regulator-always-on;
156 regulator-min-microvolt = <3000000>;
157 regulator-max-microvolt = <3000000>;
158 regulator-name = "avcc";
159 };
160
161 ®_ldo3 {
162 regulator-min-microvolt = <3300000>;
163 regulator-max-microvolt = <3300000>;
164 regulator-name = "vcc-wifi";
165 };
166
167 ®_usb0_vbus {
168 gpio = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
169 status = "okay";
170 };
171
172 &uart1 {
173 pinctrl-names = "default";
174 pinctrl-0 = <&uart1_pg_pins>;
175 status = "okay";
176 };
177
178 &usb_otg {
179 dr_mode = "otg";
180 status = "okay";
181 };
182
183 &usb_power_supply {
184 status = "okay";
185 };
186
187 &usbphy {
188 usb0_id_det-gpios = <&pio 6 2 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>; /* PG2 */
189 usb0_vbus_det-gpios = <&pio 6 1 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>; /* PG1 */
190 usb0_vbus_power-supply = <&usb_power_supply>;
191 usb0_vbus-supply = <®_usb0_vbus>;
192 usb1_vbus-supply = <®_ldo3>;
193 status = "okay";
194 };
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