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"; };

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