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