1 /*
2 * Device Tree file for Compulab SBC-A510 Single Board Computer
3 *
4 * Copyright (C) 2015, Sebastian Hesselbarth <sebastian.hesselbarth@gmail.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; version 2 of the
14 * License.
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 /*
46 * SBC-A510 comprises a PCA9555 I2C GPIO expander its GPIO lines connected to
47 *
48 * 0.0 USB0 VBUS_EN (active high)
49 * 0.1 USB0 VBUS_GOOD
50 * 0.2 DVI transmitter TI TFP410 MSEN
51 * 0.3 DVI transmitter TI TFP410 PD# (active low power down)
52 * 0.4 LVDS transmitter DS90C365 PD# (active low power down)
53 * 0.5 LCD nRST (active low reset)
54 * 0.6 PCIe0 nRST (active low reset)
55 * 0.7 mini-PCIe slot W_DISABLE#
56 *
57 * 1.0 MMC WP
58 * 1.1 Camera Input FPC FLASH_STB and P21.5
59 * 1.2 Camera Input FPC WE and P21.22
60 * 1.3 MMC VCC_EN (active high) and P21.7
61 * 1.4 Camera Input FPC AFTR_RST and P21.17
62 * 1.5 Camera Input FPC OE and P21.19
63 * 1.6 Camera Input FPC SNPSHT and P21.6
64 * 1.7 Camera Input FPC SHTR and P21.10
65 */
66
67 /dts-v1/;
68
69 #include "dove-cm-a510.dtsi"
70
71 / {
72 model = "Compulab SBC-A510";
73 compatible = "compulab,sbc-a510", "compulab,cm-a510", "marvell,dove";
74
75 chosen {
76 stdout-path = &uart0;
77 };
78
79 usb0_power: regulator-2 {
80 compatible = "regulator-fixed";
81 regulator-name = "USB Power";
82 regulator-min-microvolt = <5000000>;
83 regulator-max-microvolt = <5000000>;
84 gpio = <&gpio_ext 0 GPIO_ACTIVE_HIGH>;
85 };
86
87 mmc_power: regulator-3 {
88 compatible = "regulator-fixed";
89 regulator-name = "MMC Power";
90 regulator-min-microvolt = <3300000>;
91 regulator-max-microvolt = <3300000>;
92 gpio = <&gpio_ext 13 GPIO_ACTIVE_HIGH>;
93 };
94 };
95
96 /* Ethernet0 depends on CM-A510 option E1 */
97 &mdio { status = "disabled"; };
98 ð { status = "disabled"; };
99 ðphy { status = "disabled"; };
100
101 /*
102 * USB port 0 can be powered and monitored by I2C GPIO expander:
103 * VBUS_ENABLE on GPIO0, VBUS_GOOD on GPIO1
104 */
105 &ehci0 {
106 status = "okay";
107 vbus-supply = <&usb0_power>;
108 };
109
110 /* USB port 1 (and ports 2, 3 if CM-A510 has U4 option) */
111 &ehci1 { status = "okay"; };
112
113 /*
114 * I2C bus layout:
115 * i2c0:
116 * - Audio Codec, 0x1a (option from CM-A510)
117 * - DVI transmitter TI TFP410, 0x39
118 * - HDMI/DVI DDC channel
119 * i2c1:
120 * - GPIO expander, NXP PCA9555, 0x20
121 * - VGA DDC channel
122 */
123 &i2c {
124 pinctrl-0 = <&pmx_i2c1>;
125 pinctrl-names = "default";
126 };
127
128 &i2c0 {
129 /* TI TFP410 DVI transmitter */
130 dvi: video@39 {
131 compatible = "ti,tfp410";
132 reg = <0x39>;
133 powerdown-gpio = <&gpio_ext 3 GPIO_ACTIVE_LOW>;
134 };
135 };
136
137 &i2c1 {
138 status = "okay";
139
140 /* NXP PCA9555 GPIO expander */
141 gpio_ext: gpio@20 {
142 compatible = "nxp,pca9555";
143 reg = <0x20>;
144 gpio-controller;
145 #gpio-cells = <2>;
146 };
147 };
148
149 &pcie { status = "okay"; };
150
151 /*
152 * PCIe0 can be configured by Jumper E1 to be either connected to
153 * a mini-PCIe slot or a Pericom PI7C9X111 PCIe-to-PCI bridge.
154 */
155 &pcie0 {
156 status = "okay";
157 pinctrl-0 = <&pmx_pcie0_clkreq>;
158 pinctrl-names = "default";
159 reset-gpios = <&gpio_ext 6 GPIO_ACTIVE_LOW>;
160 };
161
162 /* Ethernet1 depends on CM-A510 option E2 */
163 &pcie1 { status = "disabled"; };
164
165 /* SATA connector */
166 &sata0 { status = "okay"; };
167
168 /*
169 * SDIO0 is connected to a MMC/SD/SDIO socket, I2C GPIO expander has
170 * VCC_MMC_ENABLE on GPIO13, MMC_WP on GPIO10
171 */
172 &sdio0 {
173 vmmc-supply = <&mmc_power>;
174 wp-gpios = <&gpio_ext 10 GPIO_ACTIVE_LOW>;
175 status = "okay";
176 };
177
178 /* UART0 on RS232 mini-connector */
179 &uart0 { status = "okay"; };
180 /* UART2 on pin headers */
181 &uart2 { status = "okay"; };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.