| /* |
| * Copyright 2021, Data61, CSIRO (ABN 41 687 119 230) |
| * Copyright 2021, Breakaway Consulting Pty. Ltd. |
| * |
| * SPDX-License-Identifier: BSD-2-Clause |
| */ |
| /* |
| * TQMa8XQP support a single UART (UART1 on the iMX8). |
| * |
| * Although there are four UARTs in the SoC only UART1 |
| * is configured by the bootloader software to be powered-on |
| * and available in a root-server. |
| * |
| * Powering on additional UARTs requires an implementation |
| * of the SCFW API to make calls on the SCU chipset, which |
| * is beyond the scope of this platform port. |
| */ |
| #include "../../chardev.h" |
| |
| static const struct dev_defn defn = { |
| .id = PS_SERIAL_DEFAULT, |
| .paddr = 0x5a070000, |
| /* Note: The actual register block is 64k in size, but |
| * chardev_map only supports mapping a single page-size |
| * register block, and in practise there aren't very |
| * many registers anyway! */ |
| .size = BIT(12), |
| .init_fn = uart_init, |
| }; |
| |
| struct ps_chardevice * |
| ps_cdev_init(enum chardev_id id, const ps_io_ops_t *o, struct ps_chardevice *d) |
| { |
| if (id != PS_SERIAL_DEFAULT) { |
| /* |
| * Only the PS_SERIAL_DEFAULT is supported, so return error |
| * on any other value |
| */ |
| return NULL; |
| } |
| |
| return (defn.init_fn(&defn, o, d)) ? NULL : d; |
| } |
