1/*
2 * Copyright 2016 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
43/dts-v1/;
44#include "sun8i-a23.dtsi"
45#include "sunxi-common-regulators.dtsi"
46
47#include <dt-bindings/gpio/gpio.h>
48#include <dt-bindings/input/input.h>
49#include <dt-bindings/pinctrl/sun4i-a10.h>
50#include <dt-bindings/pwm/pwm.h>
51
52/ {
53	model = "Polaroid MID2407PXE03 tablet";
54	compatible = "polaroid,mid2407pxe03", "allwinner,sun8i-a23";
55
56	aliases {
57		serial0 = &r_uart;
58	};
59
60	backlight: backlight {
61		compatible = "pwm-backlight";
62		pinctrl-names = "default";
63		pinctrl-0 = <&bl_en_pin_mid2407>;
64		pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
65		brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
66		default-brightness-level = <8>;
67		enable-gpios = <&pio 7 6 GPIO_ACTIVE_HIGH>; /* PH6 */
68	};
69
70	chosen {
71		stdout-path = "serial0:115200n8";
72	};
73};
74
75&i2c0 {
76	pinctrl-names = "default";
77	pinctrl-0 = <&i2c0_pins_a>;
78	status = "okay";
79	/*
80	 * The gsl1680 is rated at 400KHz and it will not work reliable at
81	 * 100KHz, this has been confirmed on multiple different tablets.
82	 * The gsl1680 is the only device on this bus.
83	 */
84	clock-frequency = <400000>;
85
86	gsl1680: touchscreen@40 {
87		compatible = "silead,gsl1680";
88		reg = <0x40>;
89		interrupt-parent = <&pio>;
90		interrupts = <1 5 IRQ_TYPE_EDGE_FALLING>; /* PB5 */
91		pinctrl-names = "default";
92		pinctrl-0 = <&ts_power_pin_mid2407>;
93		power-gpios = <&pio 7 1 GPIO_ACTIVE_HIGH>; /* PH1 */
94		touchscreen-size-x = <960>;
95		touchscreen-size-y = <640>;
96		touchscreen-inverted-x;
97		touchscreen-inverted-y;
98		touchscreen-max-fingers = <5>;
99		touchscreen-fw-name = "silead/gsl1680-polaroid-mid2407pxe03.fw";
100	};
101};
102
103&i2c1 {
104	pinctrl-names = "default";
105	pinctrl-0 = <&i2c1_pins_a>;
106	status = "okay";
107};
108
109&lradc {
110	vref-supply = <&reg_vcc3v0>;
111	status = "okay";
112
113	button@200 {
114		label = "Volume Up";
115		linux,code = <KEY_VOLUMEUP>;
116		channel = <0>;
117		voltage = <200000>;
118	};
119
120	button@400 {
121		label = "Volume Down";
122		linux,code = <KEY_VOLUMEDOWN>;
123		channel = <0>;
124		voltage = <400000>;
125	};
126};
127
128&mmc0 {
129	pinctrl-names = "default";
130	pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_mid2407>;
131	vmmc-supply = <&reg_dcdc1>;
132	bus-width = <4>;
133	cd-gpios = <&pio 1 4 GPIO_ACTIVE_HIGH>; /* PB4 */
134	cd-inverted;
135	status = "okay";
136};
137
138&pio {
139	bl_en_pin_mid2407: bl_en_pin@0 {
140		allwinner,pins = "PH6";
141		allwinner,function = "gpio_in";
142		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
143		allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
144	};
145
146	mmc0_cd_pin_mid2407: mmc0_cd_pin@0 {
147		allwinner,pins = "PB4";
148		allwinner,function = "gpio_in";
149		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
150		allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
151	};
152
153	ts_power_pin_mid2407: ts_power_pin@0 {
154		allwinner,pins = "PH1";
155		allwinner,function = "gpio_out";
156		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
157		allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
158	};
159
160	usb0_id_detect_pin: usb0_id_detect_pin@0 {
161		allwinner,pins = "PH8";
162		allwinner,function = "gpio_in";
163		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
164		allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
165	};
166};
167
168&pwm {
169	pinctrl-names = "default";
170	pinctrl-0 = <&pwm0_pins>;
171	status = "okay";
172};
173
174&r_rsb {
175	status = "okay";
176
177	axp22x: pmic@3a3 {
178		compatible = "x-powers,axp223";
179		reg = <0x3a3>;
180		interrupt-parent = <&nmi_intc>;
181		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
182		eldoin-supply = <&reg_dcdc1>;
183		x-powers,drive-vbus-en;
184	};
185};
186
187&r_uart {
188	pinctrl-names = "default";
189	pinctrl-0 = <&r_uart_pins_a>;
190	status = "okay";
191};
192
193#include "axp22x.dtsi"
194
195&reg_aldo1 {
196	regulator-always-on;
197	regulator-min-microvolt = <3000000>;
198	regulator-max-microvolt = <3000000>;
199	regulator-name = "vcc-io";
200};
201
202&reg_aldo2 {
203	regulator-always-on;
204	regulator-min-microvolt = <2350000>;
205	regulator-max-microvolt = <2650000>;
206	regulator-name = "vdd-dll";
207};
208
209&reg_aldo3 {
210	regulator-always-on;
211	regulator-min-microvolt = <2700000>;
212	regulator-max-microvolt = <3300000>;
213	regulator-name = "vcc-pll-avcc";
214};
215
216&reg_dc1sw {
217	regulator-name = "vcc-lcd";
218};
219
220&reg_dc5ldo {
221	regulator-always-on;
222	regulator-min-microvolt = <900000>;
223	regulator-max-microvolt = <1400000>;
224	regulator-name = "vdd-cpus";
225};
226
227&reg_dcdc1 {
228	regulator-always-on;
229	regulator-min-microvolt = <3000000>;
230	regulator-max-microvolt = <3000000>;
231	regulator-name = "vcc-3v0";
232};
233
234&reg_dcdc2 {
235	regulator-always-on;
236	regulator-min-microvolt = <900000>;
237	regulator-max-microvolt = <1400000>;
238	regulator-name = "vdd-sys";
239};
240
241&reg_dcdc3 {
242	regulator-always-on;
243	regulator-min-microvolt = <900000>;
244	regulator-max-microvolt = <1400000>;
245	regulator-name = "vdd-cpu";
246};
247
248&reg_dcdc5 {
249	regulator-always-on;
250	regulator-min-microvolt = <1500000>;
251	regulator-max-microvolt = <1500000>;
252	regulator-name = "vcc-dram";
253};
254
255&reg_drivevbus {
256	regulator-name = "usb0-vbus";
257	status = "okay";
258};
259
260&reg_ldo_io1 {
261	regulator-always-on;
262	regulator-min-microvolt = <3300000>;
263	regulator-max-microvolt = <3300000>;
264	regulator-name = "vcc-touchscreen";
265	status = "okay";
266};
267
268&reg_rtc_ldo {
269	regulator-name = "vcc-rtc";
270};
271
272&simplefb_lcd {
273	vcc-lcd-supply = <&reg_dc1sw>;
274};
275
276&usb_otg {
277	dr_mode = "otg";
278	status = "okay";
279};
280
281&usb_power_supply {
282	status = "okay";
283};
284
285&usbphy {
286	pinctrl-names = "default";
287	pinctrl-0 = <&usb0_id_detect_pin>;
288	usb0_id_det-gpio = <&pio 7 8 GPIO_ACTIVE_HIGH>; /* PH8 */
289	usb0_vbus_power-supply = <&usb_power_supply>;
290	usb0_vbus-supply = <&reg_drivevbus>;
291	status = "okay";
292};
293