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 LM7X 4D 16.Os 17.Sh NAME 18.Nm lm7x 19.Nd lm75, lm76, and lm77 series I2C temperature sensor driver 20.Sh SYNOPSIS 21.Pa /dev/sensors/temperature/i2c/lm7x* 22.Sh DESCRIPTION 23The 24.Nm 25driver supports devices compatible with the National Semiconductor LM75, 26LM76, and LM77 I2C temperature sensor devices. 27Each device supports a single temperature sensor that is registered with 28the kernel sensor framework and an interface to them is provided by 29.Xr ksensor 4D . 30.Pp 31The LM75 and LM77 generally measure in units of 1/2 degree Celsius while 32the LM76 measures in units of 1/16th degree Celsius. 33Temperature information is available to the system through the fault 34management architecture 35.Pq FMA . 36The file system location and programming interface to the 37.Nm 38temperature sensors are considered 39.Sy volatile . 40.Sh FILES 41.Bl -tag -width Pa 42.It Pa /dev/sensors/temperature/i2c/lm7x* 43Temperature sensor character device file. 44.It Pa /kernel/drv/amd64/lm7x 45Device driver (x86) 46.El 47.Sh SEE ALSO 48.Xr ksensor 4D , 49.Xr i2cadm 8 50