mirror of
https://github.com/riscv-software-src/opensbi.git
synced 2025-08-25 07:41:42 +01:00
a524f0a507
The serial driver subsystem does not need any extra data, so it can use `struct fdt_driver` directly. The generic fdt_serial_init() first attempts to match the chosen stdout device, and upon failure matches the first available serial device in the DT. It is a fatal error if no such device is found. This matches the behavior of fdt_driver_init_one(). Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Anup Patel <anup@brainfault.org>
37 lines
848 B
C
37 lines
848 B
C
/*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2020 Western Digital Corporation or its affiliates.
|
|
*
|
|
* Authors:
|
|
* Anup Patel <anup.patel@wdc.com>
|
|
*/
|
|
|
|
#include <sbi_utils/fdt/fdt_helper.h>
|
|
#include <sbi_utils/serial/fdt_serial.h>
|
|
#include <sbi_utils/serial/sifive-uart.h>
|
|
|
|
static int serial_sifive_init(const void *fdt, int nodeoff,
|
|
const struct fdt_match *match)
|
|
{
|
|
int rc;
|
|
struct platform_uart_data uart = { 0 };
|
|
|
|
rc = fdt_parse_sifive_uart_node(fdt, nodeoff, &uart);
|
|
if (rc)
|
|
return rc;
|
|
|
|
return sifive_uart_init(uart.addr, uart.freq, uart.baud);
|
|
}
|
|
|
|
static const struct fdt_match serial_sifive_match[] = {
|
|
{ .compatible = "sifive,fu540-c000-uart" },
|
|
{ .compatible = "sifive,uart0" },
|
|
{ },
|
|
};
|
|
|
|
const struct fdt_driver fdt_serial_sifive = {
|
|
.match_table = serial_sifive_match,
|
|
.init = serial_sifive_init
|
|
};
|