mirror of
https://github.com/riscv-software-src/opensbi.git
synced 2025-08-24 23:41:23 +01:00
52af6e4b52
Add support for the UART provided by the LiteX SoC framework (https://github.com/enjoy-digital/litex), based on its FDT info (described in the Linux tree at Documentation/devicetree/bindings/serial/litex,liteuart.yaml). Signed-off-by: Gabriel Somlo <gsomlo@gmail.com> Reviewed-by: Xiang W <wxjstz@126.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
40 lines
846 B
C
40 lines
846 B
C
/*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2021 Gabriel Somlo
|
|
*
|
|
* Authors:
|
|
* Gabriel Somlo <gsomlo@gmail.com>
|
|
*/
|
|
|
|
#include <sbi/sbi_error.h>
|
|
#include <sbi_utils/fdt/fdt_helper.h>
|
|
#include <sbi_utils/serial/fdt_serial.h>
|
|
#include <sbi_utils/serial/litex-uart.h>
|
|
|
|
static int serial_litex_init(void *fdt, int nodeoff,
|
|
const struct fdt_match *match)
|
|
{
|
|
uint64_t reg_addr, reg_size;
|
|
int rc;
|
|
|
|
if (nodeoff < 0 || !fdt)
|
|
return SBI_ENODEV;
|
|
|
|
rc = fdt_get_node_addr_size(fdt, nodeoff, 0, ®_addr, ®_size);
|
|
if (rc < 0 || !reg_addr || !reg_size)
|
|
return SBI_ENODEV;
|
|
|
|
return litex_uart_init(reg_addr);
|
|
}
|
|
|
|
static const struct fdt_match serial_litex_match[] = {
|
|
{ .compatible = "litex,liteuart" },
|
|
{ },
|
|
};
|
|
|
|
struct fdt_serial fdt_serial_litex = {
|
|
.match_table = serial_litex_match,
|
|
.init = serial_litex_init
|
|
};
|