---
name: "rk_grf"
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/rk_grf"
---

# rk\_grf(4)

driver for the General Register Files controller on RockChip SoCs

Part of [rk\_grf(4)](/rk_grf/4.md).

## NAME

**rk\_grf** – driver for the General Register Files controller on RockChip SoCs

## SYNOPSIS

**options SOC\_ROCKCHIP\_rk3328**

## DESCRIPTION

The **rk\_grf** device driver provides support for the RockChip General Register Files system controller.

## HARDWARE

The current version of the **rk\_grf** driver supports the GRF controller with one of the following compatible strings :

- rockchip,rk3328-grf

## HISTORY

The **rk\_grf** device driver first appeared in FreeBSD 12.0.

## AUTHORS

The **rk\_grf** device driver and manpage was written by Emmanuel Vadot ⟨*manu@FreeBSD.org*⟩.