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	status = "okay";
135};
136
137/*
138 * Note: PI3 is UART1_RTS and PI5 is UART1_CTS on DRC02 (uart4 of STM32MP1),
139 *       however the STM32MP1 pinmux cannot map them to UART4 .
140 */
141
142&uart8 {	/* RS485 */
143	linux,rs485-enabled-at-boot-time;
144	pinctrl-names = "default";
145	pinctrl-0 = <&uart8_pins_a>;
146	rts-gpios = <&gpioe 6 GPIO_ACTIVE_HIGH>;
147	status = "okay";
148};
149
150&usbh_ehci {
151	phys = <&usbphyc_port0>;
152	status = "okay";
153};
154
155&usbphyc {
156	status = "okay";
157};
158
159&usbphyc_port0 {
160	phy-supply = <&vdd_usb>;
161};
162