1/*
2 * Copyright 2015 Maxime Ripard
3 *
4 * Maxime Ripard <maxime.ripard@free-electrons.com>
5 *
6 * This file is dual-licensed: you can use it either under the terms
7 * of the GPL or the X11 license, at your option. Note that this dual
8 * licensing only applies to this file, and not this project as a
9 * whole.
10 *
11 *  a) This file is free software; you can redistribute it and/or
12 *     modify it under the terms of the GNU General Public License as
13 *     published by the Free Software Foundation; either version 2 of the
14 *     License, or (at your option) any later version.
15 *
16 *     This file is distributed in the hope that it will be useful,
17 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
18 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19 *     GNU General Public License for more details.
20 *
21 * Or, alternatively,
22 *
23 *  b) Permission is hereby granted, free of charge, to any person
24 *     obtaining a copy of this software and associated documentation
25 *     files (the "Software"), to deal in the Software without
26 *     restriction, including without limitation the rights to use,
27 *     copy, modify, merge, publish, distribute, sublicense, and/or
28 *     sell copies of the Software, and to permit persons to whom the
29 *     Software is furnished to do so, subject to the following
30 *     conditions:
31 *
32 *     The above copyright notice and this permission notice shall be
33 *     included in all copies or substantial portions of the Software.
34 *
35 *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
36 *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
37 *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
38 *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
39 *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
40 *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
41 *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
42 *     OTHER DEALINGS IN THE SOFTWARE.
43 */
44
45/dts-v1/;
46#include "sun8i-a23.dtsi"
47#include "sunxi-common-regulators.dtsi"
48
49#include <dt-bindings/gpio/gpio.h>
50#include <dt-bindings/input/input.h>
51
52/ {
53	model = "Allwinner A23 Evaluation Board";
54	compatible = "allwinner,sun8i-a23-evb", "allwinner,sun8i-a23";
55
56	aliases {
57		i2c0 = &i2c0;
58		i2c1 = &i2c1;
59		serial0 = &r_uart;
60	};
61
62	chosen {
63		stdout-path = "serial0:115200n8";
64	};
65};
66
67&i2c0 {
68	pinctrl-names = "default";
69	pinctrl-0 = <&i2c0_pins_a>;
70	status = "okay";
71};
72
73&i2c1 {
74	pinctrl-names = "default";
75	pinctrl-0 = <&i2c1_pins_a>;
76	status = "okay";
77};
78
79&lradc {
80	vref-supply = <&reg_vcc3v0>;
81	status = "okay";
82
83	button@190 {
84		label = "Volume Up";
85		linux,code = <KEY_VOLUMEUP>;
86		channel = <0>;
87		voltage = <190000>;
88	};
89
90	button@390 {
91		label = "Volume Down";
92		linux,code = <KEY_VOLUMEDOWN>;
93		channel = <0>;
94		voltage = <390000>;
95	};
96
97	button@600 {
98		label = "Home";
99		linux,code = <KEY_HOME>;
100		channel = <0>;
101		voltage = <600000>;
102	};
103};
104
105&mmc0 {
106	pinctrl-names = "default";
107	pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_evb>;
108	vmmc-supply = <&reg_vcc3v0>;
109	bus-width = <4>;
110	cd-gpios = <&pio 1 4 GPIO_ACTIVE_LOW>; /* PB4 */
111	status = "okay";
112};
113
114&pio {
115	mmc0_cd_pin_evb: mmc0_cd_pin@0 {
116		pins = "PB4";
117		function = "gpio_in";
118		bias-pull-up;
119	};
120};
121
122/*
123 * The RX line has a non-populated resistance. In order to use it, you
124 * need to solder R207 on the back of the board in order to close the
125 * line and get a working UART.
126 */
127&r_uart {
128	pinctrl-names = "default";
129	pinctrl-0 = <&r_uart_pins_a>;
130	status = "okay";
131};
132