1 /*
2 * Copyright 2015 - Maxime Coquelin <mcoquelin.stm32@gmail.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 * You should have received a copy of the GNU General Public
20 * License along with this file; if not, write to the Free
21 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
22 * MA 02110-1301 USA
23 *
24 * Or, alternatively,
25 *
26 * b) Permission is hereby granted, free of charge, to any person
27 * obtaining a copy of this software and associated documentation
28 * files (the "Software"), to deal in the Software without
29 * restriction, including without limitation the rights to use,
30 * copy, modify, merge, publish, distribute, sublicense, and/or
31 * sell copies of the Software, and to permit persons to whom the
32 * Software is furnished to do so, subject to the following
33 * conditions:
34 *
35 * The above copyright notice and this permission notice shall be
36 * included in all copies or substantial portions of the Software.
37 *
38 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
39 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
40 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
41 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
42 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
43 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
44 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
45 * OTHER DEALINGS IN THE SOFTWARE.
46 */
47
48 /dts-v1/;
49 #include "stm32f429.dtsi"
50 #include "stm32f429-pinctrl.dtsi"
51 #include <dt-bindings/input/input.h>
52 #include <dt-bindings/interrupt-controller/irq.h>
53 #include <dt-bindings/gpio/gpio.h>
54
55 / {
56 model = "STMicroelectronics STM32F429i-DISCO board";
57 compatible = "st,stm32f429i-disco", "st,stm32f429";
58
59 chosen {
60 bootargs = "root=/dev/ram";
61 stdout-path = "serial0:115200n8";
62 };
63
64 memory@90000000 {
65 device_type = "memory";
66 reg = <0x90000000 0x800000>;
67 };
68
69 aliases {
70 serial0 = &usart1;
71 };
72
73 leds {
74 compatible = "gpio-leds";
75 led-red {
76 gpios = <&gpiog 14 0>;
77 };
78 led-green {
79 gpios = <&gpiog 13 0>;
80 linux,default-trigger = "heartbeat";
81 };
82 };
83
84 gpio-keys {
85 compatible = "gpio-keys";
86 autorepeat;
87 button-0 {
88 label = "User";
89 linux,code = <KEY_HOME>;
90 gpios = <&gpioa 0 0>;
91 };
92 };
93
94 /* This turns on vbus for otg for host mode (dwc2) */
95 vcc5v_otg: vcc5v-otg-regulator {
96 compatible = "regulator-fixed";
97 gpio = <&gpioc 4 0>;
98 regulator-name = "vcc5_host1";
99 regulator-always-on;
100 };
101 };
102
103 &clk_hse {
104 clock-frequency = <8000000>;
105 };
106
107 &crc {
108 status = "okay";
109 };
110
111 &i2c3 {
112 pinctrl-names = "default";
113 pinctrl-0 = <&i2c3_pins>;
114 clock-frequency = <100000>;
115 status = "okay";
116
117 stmpe811@41 {
118 compatible = "st,stmpe811";
119 reg = <0x41>;
120 interrupts = <15 IRQ_TYPE_EDGE_FALLING>;
121 interrupt-parent = <&gpioa>;
122 /* 3.25 MHz ADC clock speed */
123 st,adc-freq = <1>;
124 /* 12-bit ADC */
125 st,mod-12b = <1>;
126 /* internal ADC reference */
127 st,ref-sel = <0>;
128 /* ADC converstion time: 80 clocks */
129 st,sample-time = <4>;
130
131 stmpe_touchscreen {
132 compatible = "st,stmpe-ts";
133 /* 8 sample average control */
134 st,ave-ctrl = <3>;
135 /* 7 length fractional part in z */
136 st,fraction-z = <7>;
137 /*
138 * 50 mA typical 80 mA max touchscreen drivers
139 * current limit value
140 */
141 st,i-drive = <1>;
142 /* 1 ms panel driver settling time */
143 st,settling = <3>;
144 /* 5 ms touch detect interrupt delay */
145 st,touch-det-delay = <5>;
146 };
147
148 stmpe_adc {
149 compatible = "st,stmpe-adc";
150 /* forbid to use ADC channels 3-0 (touch) */
151 st,norequest-mask = <0x0F>;
152 };
153 };
154 };
155
156 <dc {
157 status = "okay";
158 pinctrl-0 = <<dc_pins_b>;
159 pinctrl-names = "default";
160
161 port {
162 ltdc_out_rgb: endpoint {
163 remote-endpoint = <&panel_in_rgb>;
164 };
165 };
166 };
167
168 &rtc {
169 assigned-clocks = <&rcc 1 CLK_RTC>;
170 assigned-clock-parents = <&rcc 1 CLK_LSI>;
171 status = "okay";
172 };
173
174 &spi5 {
175 status = "okay";
176 pinctrl-0 = <&spi5_pins>;
177 pinctrl-names = "default";
178 #address-cells = <1>;
179 #size-cells = <0>;
180 cs-gpios = <&gpioc 1 GPIO_ACTIVE_LOW>, <&gpioc 2 GPIO_ACTIVE_LOW>;
181
182 l3gd20: l3gd20@0 {
183 compatible = "st,l3gd20-gyro";
184 spi-max-frequency = <10000000>;
185 st,drdy-int-pin = <2>;
186 interrupt-parent = <&gpioa>;
187 interrupts = <1 IRQ_TYPE_EDGE_RISING>,
188 <2 IRQ_TYPE_EDGE_RISING>;
189 reg = <0>;
190 status = "okay";
191 };
192
193 display: display@1 {
194 /* Connect panel-ilitek-9341 to ltdc */
195 compatible = "st,sf-tc240t-9370-t", "ilitek,ili9341";
196 reg = <1>;
197 spi-3wire;
198 spi-max-frequency = <10000000>;
199 dc-gpios = <&gpiod 13 0>;
200 port {
201 panel_in_rgb: endpoint {
202 remote-endpoint = <<dc_out_rgb>;
203 };
204 };
205 };
206 };
207
208 &timers5 {
209 /* Override timer5 to act as clockevent */
210 compatible = "st,stm32-timer";
211 interrupts = <50>;
212 status = "okay";
213 /delete-property/#address-cells;
214 /delete-property/#size-cells;
215 /delete-property/clock-names;
216 /delete-node/pwm;
217 /delete-node/timer@4;
218 };
219
220 &usart1 {
221 pinctrl-0 = <&usart1_pins_a>;
222 pinctrl-names = "default";
223 status = "okay";
224 };
225
226 &usbotg_hs {
227 compatible = "st,stm32f4x9-fsotg";
228 dr_mode = "host";
229 pinctrl-0 = <&usbotg_fs_pins_b>;
230 pinctrl-names = "default";
231 status = "okay";
232 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.