---
name: "syscon"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/syscon"
---

# syscon(4)

System controller

## NAME

**syscon** – System controller

## SYNOPSIS

**syscon\* at fdt?**

## DESCRIPTION

The **syscon** driver provides access to a set of miscellaneous hardware registers to other device drivers. The driver may also provide system reset and power off functionality if such functionality is provided through hardware registers in such a set.

## SEE ALSO

[intro(4)](/intro/4.md)

## HISTORY

The **syscon** driver first appeared in OpenBSD 6.1.

## AUTHORS

The **syscon** driver was written by Mark Kettenis ⟨*kettenis@openbsd.org*⟩.