---
name: "tcpci"
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/tcpci"
---

# tcpci(4)

USB Type-C Port Controller Interface

## NAME

**tcpci** – USB Type-C Port Controller Interface

## SYNOPSIS

**tcpci\* at iic?**

## DESCRIPTION

The **tcpci** driver provides support for the USB Type-C Port Controller Interface. It takes care of plug and unplug events on the USB Type-C port and discovers the orientation of the plug so that the USB SuperSpeed pins can be routed correctly. Additionally it enables power on the USB Type-C port when a sink is connected to power attached devices.

## SEE ALSO

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

## HISTORY

The **tcpci** driver first appeared in OpenBSD 6.7.

## AUTHORS

The **tcpci** driver was written by Patrick Wildt ⟨*patrick@blueri.se*⟩.