1 /*
2 * Copyright 2017 - Vikas MANOCHA <vikas.manocha@st.com>
3 *
4 * This file is dual-licensed: you can use it either under the terms
5 * of the GPL or the X11 license, at your option. Note that this dual
6 * licensing only applies to this file, and not this project as a
7 * whole.
8 *
9 * a) This file is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of the
12 * License, or (at your option) any later version.
13 *
14 * This file is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * Or, alternatively,
20 *
21 * b) Permission is hereby granted, free of charge, to any person
22 * obtaining a copy of this software and associated documentation
23 * files (the "Software"), to deal in the Software without
24 * restriction, including without limitation the rights to use,
25 * copy, modify, merge, publish, distribute, sublicense, and/or
26 * sell copies of the Software, and to permit persons to whom the
27 * Software is furnished to do so, subject to the following
28 * conditions:
29 *
30 * The above copyright notice and this permission notice shall be
31 * included in all copies or substantial portions of the Software.
32 *
33 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
34 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
35 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
36 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
37 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
38 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
39 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
40 * OTHER DEALINGS IN THE SOFTWARE.
41 */
42
43 /dts-v1/;
44 #include "stm32f746.dtsi"
45 #include "stm32f746-pinctrl.dtsi"
46 #include <dt-bindings/gpio/gpio.h>
47 #include <dt-bindings/input/input.h>
48 #include <dt-bindings/interrupt-controller/irq.h>
49
50 / {
51 model = "STMicroelectronics STM32F746-DISCO board";
52 compatible = "st,stm32f746-disco", "st,stm32f746";
53
54 chosen {
55 bootargs = "root=/dev/ram";
56 stdout-path = "serial0:115200n8";
57 };
58
59 memory@c0000000 {
60 device_type = "memory";
61 reg = <0xC0000000 0x800000>;
62 };
63
64 reserved-memory {
65 #address-cells = <1>;
66 #size-cells = <1>;
67 ranges;
68
69 linux,cma {
70 compatible = "shared-dma-pool";
71 no-map;
72 size = <0x80000>;
73 linux,dma-default;
74 };
75 };
76
77 aliases {
78 serial0 = &usart1;
79 };
80
81 usbotg_hs_phy: usb-phy {
82 #phy-cells = <0>;
83 compatible = "usb-nop-xceiv";
84 clocks = <&rcc 0 STM32F7_AHB1_CLOCK(OTGHSULPI)>;
85 clock-names = "main_clk";
86 };
87
88 /* This turns on vbus for otg fs for host mode (dwc2) */
89 vcc5v_otg_fs: vcc5v-otg-fs-regulator {
90 compatible = "regulator-fixed";
91 gpio = <&gpiod 5 0>;
92 regulator-name = "vcc5_host1";
93 regulator-always-on;
94 };
95
96 vcc_3v3: vcc-3v3 {
97 compatible = "regulator-fixed";
98 regulator-name = "vcc_3v3";
99 regulator-min-microvolt = <3300000>;
100 regulator-max-microvolt = <3300000>;
101 };
102
103 backlight: backlight {
104 compatible = "gpio-backlight";
105 gpios = <&gpiok 3 GPIO_ACTIVE_HIGH>;
106 status = "okay";
107 };
108
109 panel_rgb: panel-rgb {
110 compatible = "rocktech,rk043fn48h";
111 power-supply = <&vcc_3v3>;
112 backlight = <&backlight>;
113 enable-gpios = <&gpioi 12 GPIO_ACTIVE_HIGH>;
114 status = "okay";
115 port {
116 panel_in_rgb: endpoint {
117 remote-endpoint = <<dc_out_rgb>;
118 };
119 };
120 };
121 };
122
123 &clk_hse {
124 clock-frequency = <25000000>;
125 };
126
127 &i2c1 {
128 pinctrl-0 = <&i2c1_pins_b>;
129 pinctrl-names = "default";
130 i2c-scl-rising-time-ns = <185>;
131 i2c-scl-falling-time-ns = <20>;
132 status = "okay";
133 };
134
135 &i2c3 {
136 pinctrl-0 = <&i2c3_pins_a>;
137 pinctrl-names = "default";
138 clock-frequency = <400000>;
139 status = "okay";
140
141 touchscreen@38 {
142 compatible = "edt,edt-ft5306";
143 reg = <0x38>;
144 interrupt-parent = <&gpioi>;
145 interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
146 touchscreen-size-x = <480>;
147 touchscreen-size-y = <272>;
148 };
149 };
150
151 <dc {
152 pinctrl-0 = <<dc_pins_a>;
153 pinctrl-names = "default";
154 status = "okay";
155
156 port {
157 ltdc_out_rgb: endpoint {
158 remote-endpoint = <&panel_in_rgb>;
159 };
160 };
161 };
162
163 &sdio1 {
164 status = "okay";
165 vmmc-supply = <&vcc_3v3>;
166 cd-gpios = <&gpioc 13 GPIO_ACTIVE_LOW>;
167 pinctrl-names = "default", "opendrain", "sleep";
168 pinctrl-0 = <&sdio_pins_a>;
169 pinctrl-1 = <&sdio_pins_od_a>;
170 pinctrl-2 = <&sdio_pins_sleep_a>;
171 bus-width = <4>;
172 };
173
174 &timers5 {
175 /* Override timer5 to act as clockevent */
176 compatible = "st,stm32-timer";
177 interrupts = <50>;
178 status = "okay";
179 /delete-property/#address-cells;
180 /delete-property/#size-cells;
181 /delete-property/clock-names;
182 /delete-node/pwm;
183 /delete-node/timer@4;
184 };
185
186 &usart1 {
187 pinctrl-0 = <&usart1_pins_b>;
188 pinctrl-names = "default";
189 status = "okay";
190 };
191
192 &usbotg_fs {
193 dr_mode = "host";
194 pinctrl-0 = <&usbotg_fs_pins_a>;
195 pinctrl-names = "default";
196 status = "okay";
197 };
198
199 &usbotg_hs {
200 dr_mode = "host";
201 phys = <&usbotg_hs_phy>;
202 phy-names = "usb2-phy";
203 pinctrl-0 = <&usbotg_hs_pins_b>;
204 pinctrl-names = "default";
205 status = "okay";
206 };
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