1.\" 2.\" This file and its contents are supplied under the terms of the 3.\" Common Development and Distribution License ("CDDL"), version 1.0. 4.\" You may only use this file in accordance with the terms of version 5.\" 1.0 of the CDDL. 6.\" 7.\" A full copy of the text of the CDDL should have accompanied this 8.\" source. A copy of the CDDL is also available via the Internet at 9.\" http://www.illumos.org/license/CDDL. 10.\" 11.\" 12.\" Copyright 2025 Oxide Computer Company 13.\" 14.Dd September 21, 2025 15.Dt TMP43X 4D 16.Os 17.Sh NAME 18.Nm tmp43x 19.Nd tmp401, 411, 43x series I2C temperature sensor driver 20.Sh SYNOPSIS 21.Pa /dev/sensors/temperature/i2c/tmp43x* 22.Sh DESCRIPTION 23The 24.Nm 25driver supports the Texas Instruments TMP401, TMP411, TMP431, TMP432, 26and TMP435 I2C temperature sensor devices. 27All devices support a 28.Dq local 29sensor 30and at least one remote sensor called 31.Dq remote1 . 32The TMP432 supports a second remote temperature sensor called 33.Dq remote2 . 34.Pp 35All of the sensors are registered with the kernel sensor framework and 36an interface to them is provied by 37.Xr ksensor 4D . 38The temperature is measured in units of 1/16th of a degree Celsius and 39the devices generally have +/-1 degree Celsius of accuracy. 40.Pp 41Temperature information is available to the system through the fault 42management architecture 43.Pq FMA . 44The file system location and programming interface to the 45.Nm 46temperature sensors are considered 47.Sy volatile . 48.Sh FILES 49.Bl -tag -width Pa 50.It Pa /dev/sensors/temperature/i2c/tmp43x* 51Temperature sensor character device file. 52.It Pa /kernel/drv/amd64/tmp43x 53Device driver (x86) 54.El 55.Sh SEE ALSO 56.Xr ksensor 4D , 57.Xr i2cadm 8 58