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BCMTMON(4) Device Drivers Manual BCMTMON(4)

bcmtmonBroadcom BCM2711 temperature monitor

bcmtmon* at fdt?

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

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 <>.

June 21, 2020 OpenBSD-current