stm32mp15xx-dhcom-drc02.dtsi

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