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&eth { status = "disabled"; };
99&ethphy { 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"; };
182