mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 13:56:30 +00:00
82 lines
1.8 KiB
C
82 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2016, NVIDIA CORPORATION.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <log.h>
|
|
#include <malloc.h>
|
|
#include <misc.h>
|
|
#include <reset-uclass.h>
|
|
#include <asm/arch-tegra/bpmp_abi.h>
|
|
|
|
static int tegra186_reset_request(struct reset_ctl *reset_ctl)
|
|
{
|
|
debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
|
|
reset_ctl->dev, reset_ctl->id);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra186_reset_free(struct reset_ctl *reset_ctl)
|
|
{
|
|
debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
|
|
reset_ctl->dev, reset_ctl->id);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra186_reset_common(struct reset_ctl *reset_ctl,
|
|
enum mrq_reset_commands cmd)
|
|
{
|
|
struct mrq_reset_request req;
|
|
int ret;
|
|
|
|
req.cmd = cmd;
|
|
req.reset_id = reset_ctl->id;
|
|
|
|
ret = misc_call(reset_ctl->dev->parent, MRQ_RESET, &req, sizeof(req),
|
|
NULL, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra186_reset_assert(struct reset_ctl *reset_ctl)
|
|
{
|
|
debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
|
|
reset_ctl->dev, reset_ctl->id);
|
|
|
|
return tegra186_reset_common(reset_ctl, CMD_RESET_ASSERT);
|
|
}
|
|
|
|
static int tegra186_reset_deassert(struct reset_ctl *reset_ctl)
|
|
{
|
|
debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
|
|
reset_ctl->dev, reset_ctl->id);
|
|
|
|
return tegra186_reset_common(reset_ctl, CMD_RESET_DEASSERT);
|
|
}
|
|
|
|
struct reset_ops tegra186_reset_ops = {
|
|
.request = tegra186_reset_request,
|
|
.rfree = tegra186_reset_free,
|
|
.rst_assert = tegra186_reset_assert,
|
|
.rst_deassert = tegra186_reset_deassert,
|
|
};
|
|
|
|
static int tegra186_reset_probe(struct udevice *dev)
|
|
{
|
|
debug("%s(dev=%p)\n", __func__, dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_DRIVER(tegra186_reset) = {
|
|
.name = "tegra186_reset",
|
|
.id = UCLASS_RESET,
|
|
.probe = tegra186_reset_probe,
|
|
.ops = &tegra186_reset_ops,
|
|
};
|