mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-30 00:21:06 +00:00
17a0c14164
Add a new sysreset driver that uses the recently added watchdog support. It performs a full SoC reset by calling wdt_expire_now op. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
60 lines
1.1 KiB
C
60 lines
1.1 KiB
C
/*
|
|
* Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <sysreset.h>
|
|
#include <wdt.h>
|
|
|
|
struct wdt_reboot_priv {
|
|
struct udevice *wdt;
|
|
};
|
|
|
|
static int wdt_reboot_request(struct udevice *dev, enum sysreset_t type)
|
|
{
|
|
struct wdt_reboot_priv *priv = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
ret = wdt_expire_now(priv->wdt, 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return -EINPROGRESS;
|
|
}
|
|
|
|
static struct sysreset_ops wdt_reboot_ops = {
|
|
.request = wdt_reboot_request,
|
|
};
|
|
|
|
int wdt_reboot_probe(struct udevice *dev)
|
|
{
|
|
struct wdt_reboot_priv *priv = dev_get_priv(dev);
|
|
int err;
|
|
|
|
err = uclass_get_device_by_phandle(UCLASS_WDT, dev,
|
|
"wdt", &priv->wdt);
|
|
if (err) {
|
|
error("unable to find wdt device\n");
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id wdt_reboot_ids[] = {
|
|
{ .compatible = "wdt-reboot" },
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(wdt_reboot) = {
|
|
.name = "wdt_reboot",
|
|
.id = UCLASS_SYSRESET,
|
|
.of_match = wdt_reboot_ids,
|
|
.ops = &wdt_reboot_ops,
|
|
.priv_auto_alloc_size = sizeof(struct wdt_reboot_priv),
|
|
.probe = wdt_reboot_probe,
|
|
};
|