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// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
/*
* Copyright (C) 2020 Marek Vasut <marex@denx.de>
*/
#include <dt-bindings/input/input.h>
#include <dt-bindings/pwm/pwm.h>
/ {
aliases {
serial0 = &uart4;
serial1 = &usart3;
serial2 = &uart8;
};
chosen {
stdout-path = "serial0:115200n8";
};
};
&adc {
status = "disabled";
};
&dac {
status = "disabled";
};
&gpiob {
/*
* NOTE: On DRC02, the RS485_RX_En is controlled by a separate
* GPIO line, however the STM32 UART driver assumes RX happens
* during TX anyway and that it only controls drive enable DE
* line. Hence, the RX is always enabled here.
*/
rs485-rx-en-hog {
gpio-hog;
gpios = <8 0>;
output-low;
line-name = "rs485-rx-en";
};
};
&gpiod {
gpio-line-names = "", "", "", "",
"", "", "DHCOM-B", "",
"", "", "", "DRC02-Out1",
"DRC02-Out2", "", "", "";
};
&gpioi {
gpio-line-names = "DRC02-In1", "DHCOM-O", "DHCOM-H", "DHCOM-I",
"DHCOM-R", "DHCOM-M", "", "",
"DRC02-In2", "", "", "",
"", "", "", "";
/*
* NOTE: The USB Hub on the DRC02 needs a reset signal to be
* pulled high in order to be detected by the USB Controller.
* This signal should be handled by USB power sequencing in
* order to reset the Hub when USB bus is powered down, but
* so far there is no such functionality.
*/
usb-hub-hog {
gpio-hog;
gpios = <2 0>;
output-high;
line-name = "usb-hub-reset";
};
};
&i2c2 {
pinctrl-names = "default";
pinctrl-0 = <&i2c2_pins_a>;
i2c-scl-rising-time-ns = <185>;
i2c-scl-falling-time-ns = <20>;
status = "okay";
/* spare dmas for other usage */
/delete-property/dmas;
/delete-property/dma-names;
status = "okay";
eeprom@50 {
compatible = "atmel,24c04";
reg = <0x50>;
pagesize = <16>;
};
};
&i2c4 {
touchscreen@49 {
status = "disabled";
};
};
&i2c5 { /* TP7/TP8 */
pinctrl-names = "default";
pinctrl-0 = <&i2c5_pins_a>;
i2c-scl-rising-time-ns = <185>;
i2c-scl-falling-time-ns = <20>;
status = "okay";
/* spare dmas for other usage */
/delete-property/dmas;
/delete-property/dma-names;
};
&sdmmc3 {
/*
* On DRC02, the SoM does not have SDIO WiFi. The pins
* are used for on-board microSD slot instead.
*/
/delete-property/broken-cd;
cd-gpios = <&gpioi 10 GPIO_ACTIVE_HIGH>;
disable-wp;
};
&spi1 {
pinctrl-names = "default";
pinctrl-0 = <&spi1_pins_a>;
cs-gpios = <&gpioz 3 0>;
/* Use PIO for the display */
/delete-property/dmas;
/delete-property/dma-names;
status = "disabled"; /* Enable once there is display driver */
/*
* Note: PF3/GPIO_A , PD6/GPIO_B , PG0/GPIO_C , PC6/GPIO_E are
* also connected to the display board connector.
*/
};
&usart3 {
pinctrl-names = "default";
pinctrl-0 = <&usart3_pins_a>;
status = "okay";
};
/*
* Note: PI3 is UART1_RTS and PI5 is UART1_CTS on DRC02 (uart4 of STM32MP1),
* however the STM32MP1 pinmux cannot map them to UART4 .
*/
&uart8 { /* RS485 */
linux,rs485-enabled-at-boot-time;
pinctrl-names = "default";
pinctrl-0 = <&uart8_pins_a>;
rts-gpios = <&gpioe 6 GPIO_ACTIVE_HIGH>;
status = "okay";
};
&usbh_ehci {
phys = <&usbphyc_port0>;
status = "okay";
};
&usbphyc {
status = "okay";
};
&usbphyc_port0 {
phy-supply = <&vdd_usb>;
};
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