1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (C) 2020 Stefan Roese <sr@denx.de>
4 */
5
6 #include <common.h>
7 #include <dm.h>
8 #include <errno.h>
9 #include <sysreset.h>
10 #include <asm/io.h>
11
12 #define RST_SOFT_RST 0x0080
13
14 struct octeon_sysreset_data {
15 void __iomem *base;
16 };
17
octeon_sysreset_request(struct udevice * dev,enum sysreset_t type)18 static int octeon_sysreset_request(struct udevice *dev, enum sysreset_t type)
19 {
20 struct octeon_sysreset_data *data = dev_get_priv(dev);
21
22 writeq(1, data->base + RST_SOFT_RST);
23
24 return -EINPROGRESS;
25 }
26
octeon_sysreset_probe(struct udevice * dev)27 static int octeon_sysreset_probe(struct udevice *dev)
28 {
29 struct octeon_sysreset_data *data = dev_get_priv(dev);
30
31 data->base = dev_remap_addr(dev);
32
33 return 0;
34 }
35
36 static struct sysreset_ops octeon_sysreset = {
37 .request = octeon_sysreset_request,
38 };
39
40 static const struct udevice_id octeon_sysreset_ids[] = {
41 { .compatible = "mrvl,cn7xxx-rst" },
42 { }
43 };
44
45 U_BOOT_DRIVER(sysreset_octeon) = {
46 .id = UCLASS_SYSRESET,
47 .name = "octeon_sysreset",
48 .priv_auto = sizeof(struct octeon_sysreset_data),
49 .ops = &octeon_sysreset,
50 .probe = octeon_sysreset_probe,
51 .of_match = octeon_sysreset_ids,
52 };
53