Kernel driver nct7802

Supported chips:

  • Nuvoton NCT7802Y

    Prefix: ‘nct7802’

    Addresses scanned: I2C 0x28..0x2f

    Datasheet: Available from Nuvoton web site


Guenter Roeck <>


This driver implements support for the Nuvoton NCT7802Y hardware monitoring chip. NCT7802Y supports 6 temperature sensors, 5 voltage sensors, and 3 fan speed sensors.

Smart Fan™ speed control is available via pwmX_auto_point attributes.

Tested Boards and BIOS Versions

The driver has been reported to work with the following boards and BIOS versions.

Board BIOS version
Kontron COMe-bSC2 CHR2E934.001.GGO
Kontron COMe-bIP2 CCR2E212