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 MID2809PXE04 tablet";
54	compatible = "polaroid,mid2809pxe04", "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_mid2809>;
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&ehci0 {
76	status = "okay";
77};
78
79&i2c0 {
80	pinctrl-names = "default";
81	pinctrl-0 = <&i2c0_pins_a>;
82	status = "okay";
83};
84
85&i2c1 {
86	pinctrl-names = "default";
87	pinctrl-0 = <&i2c1_pins_a>;
88	status = "okay";
89};
90
91&lradc {
92	vref-supply = <&reg_vcc3v0>;
93	status = "okay";
94
95	button@200 {
96		label = "Volume Up";
97		linux,code = <KEY_VOLUMEUP>;
98		channel = <0>;
99		voltage = <200000>;
100	};
101
102	button@400 {
103		label = "Volume Down";
104		linux,code = <KEY_VOLUMEDOWN>;
105		channel = <0>;
106		voltage = <400000>;
107	};
108};
109
110&mmc0 {
111	pinctrl-names = "default";
112	pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_mid2809>;
113	vmmc-supply = <&reg_dcdc1>;
114	bus-width = <4>;
115	cd-gpios = <&pio 1 4 GPIO_ACTIVE_HIGH>; /* PB4 */
116	cd-inverted;
117	status = "okay";
118};
119
120&pio {
121	bl_en_pin_mid2809: bl_en_pin@0 {
122		allwinner,pins = "PH6";
123		allwinner,function = "gpio_in";
124		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
125		allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
126	};
127
128	mmc0_cd_pin_mid2809: mmc0_cd_pin@0 {
129		allwinner,pins = "PB4";
130		allwinner,function = "gpio_in";
131		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
132		allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
133	};
134};
135
136&pwm {
137	pinctrl-names = "default";
138	pinctrl-0 = <&pwm0_pins>;
139	status = "okay";
140};
141
142&r_rsb {
143	status = "okay";
144
145	axp22x: pmic@3a3 {
146		compatible = "x-powers,axp223";
147		reg = <0x3a3>;
148		interrupt-parent = <&nmi_intc>;
149		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
150		eldoin-supply = <&reg_dcdc1>;
151	};
152};
153
154&r_uart {
155	pinctrl-names = "default";
156	pinctrl-0 = <&r_uart_pins_a>;
157	status = "okay";
158};
159
160#include "axp22x.dtsi"
161
162&reg_aldo1 {
163	regulator-always-on;
164	regulator-min-microvolt = <3000000>;
165	regulator-max-microvolt = <3000000>;
166	regulator-name = "vcc-io";
167};
168
169&reg_aldo2 {
170	regulator-always-on;
171	regulator-min-microvolt = <2350000>;
172	regulator-max-microvolt = <2650000>;
173	regulator-name = "vdd-dll";
174};
175
176&reg_aldo3 {
177	regulator-always-on;
178	regulator-min-microvolt = <2700000>;
179	regulator-max-microvolt = <3300000>;
180	regulator-name = "vcc-pll-avcc";
181};
182
183&reg_dc1sw {
184	regulator-name = "vcc-lcd";
185};
186
187&reg_dc5ldo {
188	regulator-always-on;
189	regulator-min-microvolt = <900000>;
190	regulator-max-microvolt = <1400000>;
191	regulator-name = "vdd-cpus";
192};
193
194&reg_dcdc1 {
195	regulator-always-on;
196	regulator-min-microvolt = <3000000>;
197	regulator-max-microvolt = <3000000>;
198	regulator-name = "vcc-3v0";
199};
200
201&reg_dcdc2 {
202	regulator-always-on;
203	regulator-min-microvolt = <900000>;
204	regulator-max-microvolt = <1400000>;
205	regulator-name = "vdd-sys";
206};
207
208&reg_dcdc3 {
209	regulator-always-on;
210	regulator-min-microvolt = <900000>;
211	regulator-max-microvolt = <1400000>;
212	regulator-name = "vdd-cpu";
213};
214
215&reg_dcdc5 {
216	regulator-always-on;
217	regulator-min-microvolt = <1500000>;
218	regulator-max-microvolt = <1500000>;
219	regulator-name = "vcc-dram";
220};
221
222&reg_rtc_ldo {
223	regulator-name = "vcc-rtc";
224};
225
226&simplefb_lcd {
227	vcc-lcd-supply = <&reg_dc1sw>;
228};
229
230/*
231 * FIXME for now we only support host mode and rely on u-boot to have
232 * turned on Vbus which is controlled by the axp223 pmic on the board.
233 *
234 * Once we have axp223 support we should switch to fully supporting otg.
235 */
236&usb_otg {
237	dr_mode = "host";
238	status = "okay";
239};
240
241&usbphy {
242	status = "okay";
243};
244