1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * (C) Copyright 2016 Google, Inc
4  */
5 
6 #include <common.h>
7 #include <dm.h>
8 #include <errno.h>
9 #include <sysreset.h>
10 #include <wdt.h>
11 #include <asm/io.h>
12 #include <linux/err.h>
13 
14 static int ast_sysreset_request(struct udevice *dev, enum sysreset_t type)
15 {
16 	struct udevice *wdt;
17 	u32 reset_mode;
18 	int ret = uclass_first_device(UCLASS_WDT, &wdt);
19 
20 	if (ret)
21 		return ret;
22 
23 	ret = wdt_expire_now(wdt, reset_mode);
24 	if (ret) {
25 		debug("Sysreset failed: %d", ret);
26 		return ret;
27 	}
28 
29 	return -EINPROGRESS;
30 }
31 
32 static struct sysreset_ops ast_sysreset = {
33 	.request	= ast_sysreset_request,
34 };
35 
36 U_BOOT_DRIVER(sysreset_ast) = {
37 	.name	= "ast_sysreset",
38 	.id	= UCLASS_SYSRESET,
39 	.ops	= &ast_sysreset,
40 };
41