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	phys = <&usbphyc_port0>;
156	status = "okay";
157};
158
159&usbphyc {
160	status = "okay";
161};
162
163&usbphyc_port0 {
164	phy-supply = <&vdd_usb>;
165};
166
167&usbphyc_port1 {
168	phy-supply = <&vdd_usb>;
169};