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}; 170