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BCMTMON(4) Device Drivers Manual BCMTMON(4)

bcmtmonBroadcom BCM2711/BCM2712 temperature monitor

bcmtmon* at fdt?

The bcmtmon driver provides support for the temperature sensor found on the Broadcom BCM2711/BCM2712 SoC that is used in the Raspberry Pi 4/5.

Sensor values are made available through the sysctl(8) interface.

intro(4), sensorsd(8), sysctl(8)

The bcmtmon driver first appeared in OpenBSD 6.8.

The bcmtmon driver was written by Alastair Poole <netstar@gmail.com>.

September 15, 2025 OpenBSD-current