mirror of
https://github.com/u-boot/u-boot.git
synced 2024-11-26 05:34:30 +08:00
1eb47efc49
Use ePAPR defined properties for x86-uart: clock-frequency and current-speed. Assign the value of clock-frequency in device tree to plat->clock of x86-uart instead of using hardcoded number. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
45 lines
951 B
C
45 lines
951 B
C
/*
|
|
* Copyright (c) 2014 Google, Inc
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <fdtdec.h>
|
|
#include <ns16550.h>
|
|
#include <serial.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static const struct udevice_id x86_serial_ids[] = {
|
|
{ .compatible = "x86-uart" },
|
|
{ }
|
|
};
|
|
|
|
static int x86_serial_ofdata_to_platdata(struct udevice *dev)
|
|
{
|
|
struct ns16550_platdata *plat = dev_get_platdata(dev);
|
|
int ret;
|
|
|
|
ret = ns16550_serial_ofdata_to_platdata(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
plat->clock = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
|
|
"clock-frequency", 1843200);
|
|
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_DRIVER(serial_ns16550) = {
|
|
.name = "serial_x86",
|
|
.id = UCLASS_SERIAL,
|
|
.of_match = x86_serial_ids,
|
|
.ofdata_to_platdata = x86_serial_ofdata_to_platdata,
|
|
.platdata_auto_alloc_size = sizeof(struct ns16550_platdata),
|
|
.priv_auto_alloc_size = sizeof(struct NS16550),
|
|
.probe = ns16550_serial_probe,
|
|
.ops = &ns16550_serial_ops,
|
|
};
|