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 status = "okay";
69 };
70
71 &i2c1 {
72 status = "okay";
73 };
74
75 &lradc {
76 vref-supply = <®_vcc3v0>;
77 status = "okay";
78
79 button-190 {
80 label = "Volume Up";
81 linux,code = <KEY_VOLUMEUP>;
82 channel = <0>;
83 voltage = <190000>;
84 };
85
86 button-390 {
87 label = "Volume Down";
88 linux,code = <KEY_VOLUMEDOWN>;
89 channel = <0>;
90 voltage = <390000>;
91 };
92
93 button-600 {
94 label = "Home";
95 linux,code = <KEY_HOME>;
96 channel = <0>;
97 voltage = <600000>;
98 };
99 };
100
101 &mmc0 {
102 vmmc-supply = <®_vcc3v0>;
103 bus-width = <4>;
104 cd-gpios = <&pio 1 4 GPIO_ACTIVE_LOW>; /* PB4 */
105 status = "okay";
106 };
107
108 /*
109 * The RX line has a non-populated resistance. In order to use it, you
110 * need to solder R207 on the back of the board in order to close the
111 * line and get a working UART.
112 */
113 &r_uart {
114 pinctrl-names = "default";
115 pinctrl-0 = <&r_uart_pins_a>;
116 status = "okay";
117 };
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