1// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause 2/* 3 * Copyright (C) 2023 DH electronics GmbH 4 * 5 * DHCOM iMX6ULL variant: 6 * DHCM-iMX6ULL-C080-R051-F0409-SPI-E2-CAN2-SD-RTC-ADC-I-01D2 7 * DHCOR PCB number: 578-200 or newer 8 * DHCOM PCB number: 579-200 or newer 9 * DRC02 PCB number: 568-100 or newer (2nd ethernet by SoM) 10 */ 11/dts-v1/; 12 13#include "imx6ull-dhcom-som.dtsi" 14#include "imx6ull-dhcom-som-cfg-sdcard.dtsi" 15 16/ { 17 model = "DH electronics i.MX6ULL DHCOM on DRC02"; 18 compatible = "dh,imx6ull-dhcom-drc02", "dh,imx6ull-dhcom-som", 19 "dh,imx6ull-dhcor-som", "fsl,imx6ull"; 20}; 21 22/* 23 * The signals for CAN2 TX and RX are routed to the DHCOM UART1 RTS/CTS pins. 24 * Therefore the UART RTS/CTS must be output on other DHCOM pins, see uart1 25 * node below. 26 */ 27&can2 { 28 status = "okay"; 29}; 30 31&gpio1 { 32 gpio-line-names = 33 "", "", "", "", 34 "", "", "", "", 35 "", "", "", "DRC02-In2", 36 "", "", "", "", 37 "", "", "DHCOM-I", "", 38 "", "", "", "", 39 "", "", "", "", 40 "", "", "", ""; 41}; 42 43&gpio4 { 44 gpio-line-names = 45 "", "", "", "", 46 "", "", "", "", 47 "", "", "", "", 48 "", "", "", "", 49 "", "DRC02-HW0", "DRC02-HW1", "DHCOM-M", 50 "DRC02-HW2", "DHCOM-U", "DHCOM-T", "DHCOM-S", 51 "DHCOM-R", "DHCOM-Q", "DHCOM-P", "DHCOM-O", 52 "DHCOM-N", "", "", ""; 53 /* 54 * NOTE: On DRC02, the RS485_RX_En is controlled by a separate 55 * GPIO line, however the i.MX6ULL UART driver assumes RX happens 56 * during TX anyway and that it only controls drive enable DE 57 * line. Hence, the RX is always enabled here. 58 */ 59 rs485-rx-en-hog { 60 gpio-hog; 61 gpios = <25 0>; /* GPIO Q */ 62 line-name = "rs485-rx-en"; 63 output-low; 64 }; 65}; 66 67&gpio5 { 68 gpio-line-names = 69 "DHCOM-A", "DHCOM-B", "DHCOM-C", "DRC02-Out2", 70 "DHCOM-E", "", "", "DRC02-Out1", 71 "DRC02-In1", "DHCOM-H", "", "", 72 "", "", "", "", 73 "", "", "", "", 74 "", "", "", "", 75 "", "", "", "", 76 "", "", "", ""; 77}; 78 79/* DHCOM I2C2 */ 80&i2c1 { 81 eeprom@56 { 82 compatible = "atmel,24c04"; 83 reg = <0x56>; 84 pagesize = <16>; 85 }; 86}; 87 88&uart1 { 89 /delete-property/ uart-has-rtscts; 90 rts-gpios = <&gpio1 18 GPIO_ACTIVE_HIGH>; /* GPIO I */ 91 cts-gpios = <&gpio4 19 GPIO_ACTIVE_HIGH>; /* GPIO M */ 92}; 93 94/* Use UART as RS485 */ 95&uart2 { 96 /delete-property/ uart-has-rtscts; 97 linux,rs485-enabled-at-boot-time; 98 rts-gpios = <&gpio4 26 GPIO_ACTIVE_HIGH>; /* GPIO P */ 99}; 100