74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Reset driver for the StarFive JH7110 SoC
|
|
*
|
|
* Copyright (C) 2022 StarFive Technology Co., Ltd.
|
|
*/
|
|
|
|
#include <linux/auxiliary_bus.h>
|
|
|
|
#include <soc/starfive/reset-starfive-jh71x0.h>
|
|
|
|
#include "reset-starfive-jh71x0.h"
|
|
|
|
#include <dt-bindings/reset/starfive,jh7110-crg.h>
|
|
|
|
struct jh7110_reset_info {
|
|
unsigned int nr_resets;
|
|
unsigned int assert_offset;
|
|
unsigned int status_offset;
|
|
};
|
|
|
|
static const struct jh7110_reset_info jh7110_sys_info = {
|
|
.nr_resets = JH7110_SYSRST_END,
|
|
.assert_offset = 0x2F8,
|
|
.status_offset = 0x308,
|
|
};
|
|
|
|
static const struct jh7110_reset_info jh7110_aon_info = {
|
|
.nr_resets = JH7110_AONRST_END,
|
|
.assert_offset = 0x38,
|
|
.status_offset = 0x3C,
|
|
};
|
|
|
|
static int jh7110_reset_probe(struct auxiliary_device *adev,
|
|
const struct auxiliary_device_id *id)
|
|
{
|
|
struct jh7110_reset_info *info = (struct jh7110_reset_info *)(id->driver_data);
|
|
struct jh71x0_reset_adev *rdev = to_jh71x0_reset_adev(adev);
|
|
void __iomem *base = rdev->base;
|
|
|
|
if (!info || !base)
|
|
return -ENODEV;
|
|
|
|
return reset_starfive_jh71x0_register(&adev->dev, adev->dev.parent->of_node,
|
|
base + info->assert_offset,
|
|
base + info->status_offset,
|
|
NULL,
|
|
info->nr_resets,
|
|
NULL);
|
|
}
|
|
|
|
static const struct auxiliary_device_id jh7110_reset_ids[] = {
|
|
{
|
|
.name = "clk_starfive_jh7110_sys.rst-sys",
|
|
.driver_data = (kernel_ulong_t)&jh7110_sys_info,
|
|
},
|
|
{
|
|
.name = "clk_starfive_jh7110_sys.rst-aon",
|
|
.driver_data = (kernel_ulong_t)&jh7110_aon_info,
|
|
},
|
|
{ /* sentinel */ }
|
|
};
|
|
MODULE_DEVICE_TABLE(auxiliary, jh7110_reset_ids);
|
|
|
|
static struct auxiliary_driver jh7110_reset_driver = {
|
|
.probe = jh7110_reset_probe,
|
|
.id_table = jh7110_reset_ids,
|
|
};
|
|
module_auxiliary_driver(jh7110_reset_driver);
|
|
|
|
MODULE_AUTHOR("Hal Feng <hal.feng@starfivetech.com>");
|
|
MODULE_DESCRIPTION("StarFive JH7110 reset driver");
|
|
MODULE_LICENSE("GPL");
|