1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2015 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
12 #include <dm/device-internal.h>
15 #include <linux/err.h>
17 int sysreset_request(struct udevice *dev, enum sysreset_t type)
19 struct sysreset_ops *ops = sysreset_get_ops(dev);
24 return ops->request(dev, type);
27 int sysreset_walk(enum sysreset_t type)
32 while (ret != -EINPROGRESS && type < SYSRESET_COUNT) {
33 for (uclass_first_device(UCLASS_SYSRESET, &dev);
35 uclass_next_device(&dev)) {
36 ret = sysreset_request(dev, type);
37 if (ret == -EINPROGRESS)
46 void sysreset_walk_halt(enum sysreset_t type)
50 ret = sysreset_walk(type);
52 /* Wait for the reset to take effect */
53 if (ret == -EINPROGRESS)
56 /* Still no reset? Give up */
57 debug("System reset not supported on this platform\n");
62 * reset_cpu() - calls sysreset_walk(SYSRESET_WARM)
64 void reset_cpu(ulong addr)
66 sysreset_walk_halt(SYSRESET_WARM);
70 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
72 sysreset_walk_halt(SYSRESET_COLD);
77 UCLASS_DRIVER(sysreset) = {
78 .id = UCLASS_SYSRESET,