0001 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
0002 /*
0003 * Copyright (C) 2020 Marek Vasut <marex@denx.de>
0004 */
0005
0006 #include <dt-bindings/input/input.h>
0007 #include <dt-bindings/pwm/pwm.h>
0008
0009 / {
0010 aliases {
0011 serial0 = &uart4;
0012 serial1 = &usart3;
0013 serial2 = &uart8;
0014 };
0015
0016 chosen {
0017 stdout-path = "serial0:115200n8";
0018 };
0019 };
0020
0021 &adc {
0022 status = "disabled";
0023 };
0024
0025 &dac {
0026 status = "disabled";
0027 };
0028
0029 &gpiob {
0030 /*
0031 * NOTE: On DRC02, the RS485_RX_En is controlled by a separate
0032 * GPIO line, however the STM32 UART driver assumes RX happens
0033 * during TX anyway and that it only controls drive enable DE
0034 * line. Hence, the RX is always enabled here.
0035 */
0036 rs485-rx-en-hog {
0037 gpio-hog;
0038 gpios = <8 0>;
0039 output-low;
0040 line-name = "rs485-rx-en";
0041 };
0042 };
0043
0044 &gpiod {
0045 gpio-line-names = "", "", "", "",
0046 "", "", "DHCOM-B", "",
0047 "", "", "", "DRC02-Out1",
0048 "DRC02-Out2", "", "", "";
0049 };
0050
0051 &gpioi {
0052 gpio-line-names = "DRC02-In1", "DHCOM-O", "DHCOM-H", "DHCOM-I",
0053 "DHCOM-R", "DHCOM-M", "", "",
0054 "DRC02-In2", "", "", "",
0055 "", "", "", "";
0056
0057 /*
0058 * NOTE: The USB Hub on the DRC02 needs a reset signal to be
0059 * pulled high in order to be detected by the USB Controller.
0060 * This signal should be handled by USB power sequencing in
0061 * order to reset the Hub when USB bus is powered down, but
0062 * so far there is no such functionality.
0063 */
0064 usb-hub-hog {
0065 gpio-hog;
0066 gpios = <2 0>;
0067 output-high;
0068 line-name = "usb-hub-reset";
0069 };
0070 };
0071
0072 &i2c2 {
0073 pinctrl-names = "default";
0074 pinctrl-0 = <&i2c2_pins_a>;
0075 i2c-scl-rising-time-ns = <185>;
0076 i2c-scl-falling-time-ns = <20>;
0077 status = "okay";
0078 /* spare dmas for other usage */
0079 /delete-property/dmas;
0080 /delete-property/dma-names;
0081 status = "okay";
0082
0083 eeprom@50 {
0084 compatible = "atmel,24c04";
0085 reg = <0x50>;
0086 pagesize = <16>;
0087 };
0088 };
0089
0090 &i2c4 {
0091 touchscreen@49 {
0092 status = "disabled";
0093 };
0094 };
0095
0096 &i2c5 { /* TP7/TP8 */
0097 pinctrl-names = "default";
0098 pinctrl-0 = <&i2c5_pins_a>;
0099 i2c-scl-rising-time-ns = <185>;
0100 i2c-scl-falling-time-ns = <20>;
0101 status = "okay";
0102 /* spare dmas for other usage */
0103 /delete-property/dmas;
0104 /delete-property/dma-names;
0105 };
0106
0107 &sdmmc3 {
0108 /*
0109 * On DRC02, the SoM does not have SDIO WiFi. The pins
0110 * are used for on-board microSD slot instead.
0111 */
0112 /delete-property/broken-cd;
0113 cd-gpios = <&gpioi 10 GPIO_ACTIVE_HIGH>;
0114 disable-wp;
0115 };
0116
0117 &spi1 {
0118 pinctrl-names = "default";
0119 pinctrl-0 = <&spi1_pins_a>;
0120 cs-gpios = <&gpioz 3 0>;
0121 /* Use PIO for the display */
0122 /delete-property/dmas;
0123 /delete-property/dma-names;
0124 status = "disabled"; /* Enable once there is display driver */
0125 /*
0126 * Note: PF3/GPIO_A , PD6/GPIO_B , PG0/GPIO_C , PC6/GPIO_E are
0127 * also connected to the display board connector.
0128 */
0129 };
0130
0131 &usart3 {
0132 pinctrl-names = "default";
0133 pinctrl-0 = <&usart3_pins_a>;
0134 /delete-property/dmas;
0135 /delete-property/dma-names;
0136 status = "okay";
0137 };
0138
0139 /*
0140 * Note: PI3 is UART1_RTS and PI5 is UART1_CTS on DRC02 (uart4 of STM32MP1),
0141 * however the STM32MP1 pinmux cannot map them to UART4 .
0142 */
0143
0144 &uart8 { /* RS485 */
0145 linux,rs485-enabled-at-boot-time;
0146 pinctrl-names = "default";
0147 pinctrl-0 = <&uart8_pins_a>;
0148 rts-gpios = <&gpioe 6 GPIO_ACTIVE_HIGH>;
0149 /delete-property/dmas;
0150 /delete-property/dma-names;
0151 status = "okay";
0152 };
0153
0154 &usbh_ehci {
0155 phys = <&usbphyc_port0>;
0156 status = "okay";
0157 };
0158
0159 &usbphyc {
0160 status = "okay";
0161 };
0162
0163 &usbphyc_port0 {
0164 phy-supply = <&vdd_usb>;
0165 };
0166
0167 &usbphyc_port1 {
0168 phy-supply = <&vdd_usb>;
0169 };
