| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | }; |