---
name: "amdsbwd"
section: "4"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["freebsd"]
url: "https://new.carta.tech/amdsbwd"
---

# amdsbwd(4)

device driver for the AMD southbridge watchdog timers

## NAME

**amdsbwd** – device driver for the AMD southbridge watchdog timers

## SYNOPSIS

To compile this driver into the kernel, place the following line in your kernel configuration file:

**device amdsbwd**

Alternatively, to load the driver as a module at boot time, place the following line in [loader.conf(5)](/loader.conf/5.md):

```
amdsbwd_load="YES"
```

## DESCRIPTION

The **amdsbwd** driver provides [watchdog(4)](/watchdog/4.md) support for the watchdog timers present on the supported chipsets.

## HARDWARE

The **amdsbwd** driver supports the following chipsets:

- AMD SB600/7x0/8x0/9x0 southbridges

- AMD Axx/Hudson/Bolton FCHs

- AMD FCHs integrated into Family 15h Models 60h-6Fh, 70h-7Fh Processors

- AMD FCHs integrated into Family 16h Models 00h-0Fh, 30h-3Fh Processors

## SEE ALSO

[watchdog(4)](/watchdog/4.md), [watchdog(8)](/watchdog/8.md), [watchdogd(8)](/watchdogd/8.md), [watchdog(9)](/watchdog/9.md)

## HISTORY

The **amdsbwd** driver first appeared in FreeBSD 7.3 and FreeBSD 8.1.

## AUTHORS

The **amdsbwd** driver was written by Andriy Gapon ⟨*avg@FreeBSD.org*⟩. This manual page was written by Andriy Gapon ⟨*avg@FreeBSD.org*⟩.