1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
2 /*
3 * Copyright (C) 2020 Marek Vasut <marex@denx.de>
4 */
5
6 #include <dt-bindings/input/input.h>
7 #include <dt-bindings/pwm/pwm.h>
8
9 / {
10 aliases {
11 serial0 = &uart4;
12 serial1 = &usart3;
13 serial2 = &uart8;
14 };
15
16 chosen {
17 stdout-path = "serial0:115200n8";
18 };
19 };
20
21 &adc {
22 status = "disabled";
23 };
24
25 &dac {
26 status = "disabled";
27 };
28
29 &gpiob {
30 /*
31 * NOTE: On DRC02, the RS485_RX_En is controlled by a separate
32 * GPIO line, however the STM32 UART driver assumes RX happens
33 * during TX anyway and that it only controls drive enable DE
34 * line. Hence, the RX is always enabled here.
35 */
36 rs485-rx-en-hog {
37 gpio-hog;
38 gpios = <8 0>;
39 output-low;
40 line-name = "rs485-rx-en";
41 };
42 };
43
44 &gpiod {
45 gpio-line-names = "", "", "", "",
46 "", "", "DHCOM-B", "",
47 "", "", "", "DRC02-Out1",
48 "DRC02-Out2", "", "", "";
49 };
50
51 &gpioi {
52 gpio-line-names = "DRC02-In1", "DHCOM-O", "DHCOM-H", "DHCOM-I",
53 "DHCOM-R", "DHCOM-M", "", "",
54 "DRC02-In2", "", "", "",
55 "", "", "", "";
56
57 /*
58 * NOTE: The USB Hub on the DRC02 needs a reset signal to be
59 * pulled high in order to be detected by the USB Controller.
60 * This signal should be handled by USB power sequencing in
61 * order to reset the Hub when USB bus is powered down, but
62 * so far there is no such functionality.
63 */
64 usb-hub-hog {
65 gpio-hog;
66 gpios = <2 0>;
67 output-high;
68 line-name = "usb-hub-reset";
69 };
70 };
71
72 &i2c2 {
73 pinctrl-names = "default";
74 pinctrl-0 = <&i2c2_pins_a>;
75 i2c-scl-rising-time-ns = <185>;
76 i2c-scl-falling-time-ns = <20>;
77 status = "okay";
78 /* spare dmas for other usage */
79 /delete-property/dmas;
80 /delete-property/dma-names;
81 status = "okay";
82
83 eeprom@50 {
84 compatible = "atmel,24c04";
85 reg = <0x50>;
86 pagesize = <16>;
87 };
88 };
89
90 &i2c4 {
91 touchscreen@49 {
92 status = "disabled";
93 };
94 };
95
96 &i2c5 { /* TP7/TP8 */
97 pinctrl-names = "default";
98 pinctrl-0 = <&i2c5_pins_a>;
99 i2c-scl-rising-time-ns = <185>;
100 i2c-scl-falling-time-ns = <20>;
101 status = "okay";
102 /* spare dmas for other usage */
103 /delete-property/dmas;
104 /delete-property/dma-names;
105 };
106
107 &sdmmc3 {
108 /*
109 * On DRC02, the SoM does not have SDIO WiFi. The pins
110 * are used for on-board microSD slot instead.
111 */
112 /delete-property/broken-cd;
113 cd-gpios = <&gpioi 10 GPIO_ACTIVE_HIGH>;
114 disable-wp;
115 };
116
117 &spi1 {
118 pinctrl-names = "default";
119 pinctrl-0 = <&spi1_pins_a>;
120 cs-gpios = <&gpioz 3 0>;
121 /* Use PIO for the display */
122 /delete-property/dmas;
123 /delete-property/dma-names;
124 status = "disabled"; /* Enable once there is display driver */
125 /*
126 * Note: PF3/GPIO_A , PD6/GPIO_B , PG0/GPIO_C , PC6/GPIO_E are
127 * also connected to the display board connector.
128 */
129 };
130
131 &usart3 {
132 pinctrl-names = "default";
133 pinctrl-0 = <&usart3_pins_a>;
134 /delete-property/dmas;
135 /delete-property/dma-names;
136 status = "okay";
137 };
138
139 /*
140 * Note: PI3 is UART1_RTS and PI5 is UART1_CTS on DRC02 (uart4 of STM32MP1),
141 * however the STM32MP1 pinmux cannot map them to UART4 .
142 */
143
144 &uart8 { /* RS485 */
145 linux,rs485-enabled-at-boot-time;
146 pinctrl-names = "default";
147 pinctrl-0 = <&uart8_pins_a>;
148 rts-gpios = <&gpioe 6 GPIO_ACTIVE_HIGH>;
149 /delete-property/dmas;
150 /delete-property/dma-names;
151 status = "okay";
152 };
153
154 &usbh_ehci {
155 status = "okay";
156 };
157
158 &usbphyc {
159 status = "okay";
160 };
161
162 &usbphyc_port0 {
163 phy-supply = <&vdd_usb>;
164 };
165
166 &usbphyc_port1 {
167 phy-supply = <&vdd_usb>;
168 };
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