mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 05:42:58 +00:00
73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2016, NVIDIA CORPORATION.
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: GPL-2.0
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <common.h>
|
||
|
|
#include <dm.h>
|
||
|
|
#include <reset-uclass.h>
|
||
|
|
#include <asm/arch/clock.h>
|
||
|
|
#include <asm/arch-tegra/clk_rst.h>
|
||
|
|
|
||
|
|
static int tegra_car_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);
|
||
|
|
|
||
|
|
/* PERIPH_ID_COUNT varies per SoC */
|
||
|
|
if (reset_ctl->id >= PERIPH_ID_COUNT)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int tegra_car_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 tegra_car_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);
|
||
|
|
|
||
|
|
reset_set_enable(reset_ctl->id, 1);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int tegra_car_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);
|
||
|
|
|
||
|
|
reset_set_enable(reset_ctl->id, 0);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct reset_ops tegra_car_reset_ops = {
|
||
|
|
.request = tegra_car_reset_request,
|
||
|
|
.free = tegra_car_reset_free,
|
||
|
|
.rst_assert = tegra_car_reset_assert,
|
||
|
|
.rst_deassert = tegra_car_reset_deassert,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int tegra_car_reset_probe(struct udevice *dev)
|
||
|
|
{
|
||
|
|
debug("%s(dev=%p)\n", __func__, dev);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
U_BOOT_DRIVER(tegra_car_reset) = {
|
||
|
|
.name = "tegra_car_reset",
|
||
|
|
.id = UCLASS_RESET,
|
||
|
|
.probe = tegra_car_reset_probe,
|
||
|
|
.ops = &tegra_car_reset_ops,
|
||
|
|
};
|