100 lines
2.2 KiB
Plaintext
100 lines
2.2 KiB
Plaintext
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// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
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/*
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* Copyright (C) 2023 DH electronics GmbH
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*
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* DHCOM iMX6ULL variant:
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* DHCM-iMX6ULL-C080-R051-F0409-SPI-E2-CAN2-SD-RTC-ADC-I-01D2
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* DHCOR PCB number: 578-200 or newer
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* DHCOM PCB number: 579-200 or newer
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* DRC02 PCB number: 568-100 or newer (2nd ethernet by SoM)
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*/
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/dts-v1/;
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#include "imx6ull-dhcom-som.dtsi"
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#include "imx6ull-dhcom-som-cfg-sdcard.dtsi"
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/ {
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model = "DH electronics i.MX6ULL DHCOM on DRC02";
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compatible = "dh,imx6ull-dhcom-drc02", "dh,imx6ull-dhcom-som",
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"dh,imx6ull-dhcor-som", "fsl,imx6ull";
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};
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/*
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* The signals for CAN2 TX and RX are routed to the DHCOM UART1 RTS/CTS pins.
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* Therefore the UART RTS/CTS must be output on other DHCOM pins, see uart1
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* node below.
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*/
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&can2 {
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status = "okay";
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};
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&gpio1 {
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gpio-line-names =
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"", "", "", "",
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"", "", "", "",
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"", "", "", "DRC02-In2",
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"", "", "", "",
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"", "", "DHCOM-I", "",
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"", "", "", "",
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"", "", "", "",
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"", "", "", "";
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};
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&gpio4 {
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gpio-line-names =
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"", "", "", "",
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"", "", "", "",
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"", "", "", "",
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"", "", "", "",
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"", "DRC02-HW0", "DRC02-HW1", "DHCOM-M",
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"DRC02-HW2", "DHCOM-U", "DHCOM-T", "DHCOM-S",
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"DHCOM-R", "DHCOM-Q", "DHCOM-P", "DHCOM-O",
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"DHCOM-N", "", "", "";
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/*
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* NOTE: On DRC02, the RS485_RX_En is controlled by a separate
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* GPIO line, however the i.MX6ULL UART driver assumes RX happens
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* during TX anyway and that it only controls drive enable DE
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* line. Hence, the RX is always enabled here.
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*/
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rs485-rx-en-hog {
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gpio-hog;
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gpios = <25 0>; /* GPIO Q */
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line-name = "rs485-rx-en";
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output-low;
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};
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};
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&gpio5 {
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gpio-line-names =
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"DHCOM-A", "DHCOM-B", "DHCOM-C", "DRC02-Out2",
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"DHCOM-E", "", "", "DRC02-Out1",
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"DRC02-In1", "DHCOM-H", "", "",
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"", "", "", "",
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"", "", "", "",
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"", "", "", "",
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"", "", "", "",
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"", "", "", "";
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};
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/* DHCOM I2C2 */
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&i2c1 {
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eeprom@56 {
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compatible = "atmel,24c04";
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reg = <0x56>;
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pagesize = <16>;
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};
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};
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&uart1 {
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/delete-property/ uart-has-rtscts;
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rts-gpios = <&gpio1 18 GPIO_ACTIVE_HIGH>; /* GPIO I */
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cts-gpios = <&gpio4 19 GPIO_ACTIVE_HIGH>; /* GPIO M */
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};
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/* Use UART as RS485 */
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&uart2 {
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/delete-property/ uart-has-rtscts;
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linux,rs485-enabled-at-boot-time;
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rts-gpios = <&gpio4 26 GPIO_ACTIVE_HIGH>; /* GPIO P */
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};
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