mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-09 04:36:16 +09:00
4c99ccfe13
This adds a reset driver for tangier processor. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
49 lines
931 B
C
49 lines
931 B
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
|
|
*
|
|
* Reset driver for tangier processor
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <sysreset.h>
|
|
#include <asm/scu.h>
|
|
|
|
static int tangier_sysreset_request(struct udevice *dev, enum sysreset_t type)
|
|
{
|
|
int value;
|
|
|
|
switch (type) {
|
|
case SYSRESET_WARM:
|
|
value = IPCMSG_WARM_RESET;
|
|
break;
|
|
case SYSRESET_COLD:
|
|
value = IPCMSG_COLD_RESET;
|
|
break;
|
|
default:
|
|
return -ENOSYS;
|
|
}
|
|
|
|
scu_ipc_simple_command(value, 0);
|
|
|
|
return -EINPROGRESS;
|
|
}
|
|
|
|
static const struct udevice_id tangier_sysreset_ids[] = {
|
|
{ .compatible = "intel,reset-tangier" },
|
|
{ }
|
|
};
|
|
|
|
static struct sysreset_ops tangier_sysreset_ops = {
|
|
.request = tangier_sysreset_request,
|
|
};
|
|
|
|
U_BOOT_DRIVER(tangier_sysreset) = {
|
|
.name = "tangier-sysreset",
|
|
.id = UCLASS_SYSRESET,
|
|
.of_match = tangier_sysreset_ids,
|
|
.ops = &tangier_sysreset_ops,
|
|
.flags = DM_FLAG_PRE_RELOC,
|
|
};
|