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		pinctrl-names = "default";
54		pinctrl-0 = <&bl_en_pin>;
55		pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
56		brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
57		default-brightness-level = <8>;
58		enable-gpios = <&pio 7 6 GPIO_ACTIVE_HIGH>; /* PH6 */
59	};
60
61	chosen {
62		stdout-path = "serial0:115200n8";
63	};
64};
65
66&i2c0 {
67	/*
68	 * The gsl1680 is rated at 400KHz and it will not work reliable at
69	 * 100KHz, this has been confirmed on multiple different q8 tablets.
70	 * The gsl1680 is the only device on this bus.
71	 */
72	clock-frequency = <400000>;
73
74	gsl1680: touchscreen@40 {
75		compatible = "silead,gsl1680";
76		reg = <0x40>;
77		interrupt-parent = <&pio>;
78		interrupts = <1 5 IRQ_TYPE_EDGE_FALLING>; /* PB5 */
79		pinctrl-names = "default";
80		pinctrl-0 = <&ts_power_pin>;
81		power-gpios = <&pio 7 1 GPIO_ACTIVE_HIGH>; /* PH1 */
82		/* Most tablets use this touchscreen, but not all */
83		status = "disabled";
84	};
85};
86
87&mmc0 {
88	pinctrl-names = "default";
89	pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin>;
90	vmmc-supply = <&reg_dcdc1>;
91	bus-width = <4>;
92	cd-gpios = <&pio 1 4 GPIO_ACTIVE_HIGH>; /* PB4 */
93	cd-inverted;
94	status = "okay";
95};
96
97&pio {
98	bl_en_pin: bl_en_pin@0 {
99		allwinner,pins = "PH6";
100		allwinner,function = "gpio_in";
101		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
102		allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
103	};
104
105	mmc0_cd_pin: mmc0_cd_pin@0 {
106		allwinner,pins = "PB4";
107		allwinner,function = "gpio_in";
108		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
109		allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
110	};
111
112	ts_power_pin: ts_power_pin@0 {
113		allwinner,pins = "PH1";
114		allwinner,function = "gpio_out";
115		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
116		allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
117	};
118
119	usb0_id_detect_pin: usb0_id_detect_pin@0 {
120		allwinner,pins = "PH8";
121		allwinner,function = "gpio_in";
122		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
123		allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
124	};
125};
126
127&r_rsb {
128	status = "okay";
129
130	axp22x: pmic@3a3 {
131		compatible = "x-powers,axp223";
132		reg = <0x3a3>;
133		interrupt-parent = <&nmi_intc>;
134		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
135		eldoin-supply = <&reg_dcdc1>;
136		drivevbus-supply = <&reg_vcc5v0>;
137		x-powers,drive-vbus-en;
138	};
139};
140
141#include "axp22x.dtsi"
142
143&reg_aldo1 {
144	regulator-always-on;
145	regulator-min-microvolt = <3000000>;
146	regulator-max-microvolt = <3000000>;
147	regulator-name = "vcc-io";
148};
149
150&reg_aldo2 {
151	regulator-always-on;
152	regulator-min-microvolt = <2350000>;
153	regulator-max-microvolt = <2650000>;
154	regulator-name = "vdd-dll";
155};
156
157&reg_aldo3 {
158	regulator-always-on;
159	regulator-min-microvolt = <2700000>;
160	regulator-max-microvolt = <3300000>;
161	regulator-name = "vcc-pll-avcc";
162};
163
164&reg_dc1sw {
165	regulator-name = "vcc-lcd";
166};
167
168&reg_dc5ldo {
169	regulator-always-on;
170	regulator-min-microvolt = <900000>;
171	regulator-max-microvolt = <1400000>;
172	regulator-name = "vdd-cpus";
173};
174
175&reg_dcdc1 {
176	regulator-always-on;
177	regulator-min-microvolt = <3000000>;
178	regulator-max-microvolt = <3000000>;
179	regulator-name = "vcc-3v0";
180};
181
182&reg_dcdc2 {
183	regulator-always-on;
184	regulator-min-microvolt = <900000>;
185	regulator-max-microvolt = <1400000>;
186	regulator-name = "vdd-sys";
187};
188
189&reg_dcdc3 {
190	regulator-always-on;
191	regulator-min-microvolt = <900000>;
192	regulator-max-microvolt = <1400000>;
193	regulator-name = "vdd-cpu";
194};
195
196&reg_dcdc5 {
197	regulator-always-on;
198	regulator-min-microvolt = <1500000>;
199	regulator-max-microvolt = <1500000>;
200	regulator-name = "vcc-dram";
201};
202
203&reg_dldo1 {
204	regulator-min-microvolt = <3300000>;
205	regulator-max-microvolt = <3300000>;
206	regulator-name = "vcc-wifi";
207};
208
209&reg_drivevbus {
210	regulator-name = "usb0-vbus";
211	status = "okay";
212};
213
214&reg_rtc_ldo {
215	regulator-name = "vcc-rtc";
216};
217
218&r_uart {
219	pinctrl-names = "default";
220	pinctrl-0 = <&r_uart_pins_a>;
221	status = "okay";
222};
223
224&simplefb_lcd {
225	vcc-lcd-supply = <&reg_dc1sw>;
226};
227
228&usb_otg {
229	dr_mode = "otg";
230	status = "okay";
231};
232
233&usb_power_supply {
234	status = "okay";
235};
236
237&usbphy {
238	pinctrl-names = "default";
239	pinctrl-0 = <&usb0_id_detect_pin>;
240	usb0_id_det-gpio = <&pio 7 8 GPIO_ACTIVE_HIGH>; /* PH8 */
241	usb0_vbus_power-supply = <&usb_power_supply>;
242	usb0_vbus-supply = <&reg_drivevbus>;
243	status = "okay";
244};
245