Linux Driver for LM90


Description & Features

Technical Documents

Support & Training

Order Now


The Linux driver supports the LM90 series of Remote and Local Temp Sensors. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.


Linux Mainline Status

Available in Linux Main line: Yes
Available through N/A

Supported Devices:

  • lm90
  • lm86
  • lm89
  • lm99
  • tmp451


Linux Source Files

The files associated with this device are:

  1. drivers/hwmon/lm90.c
  2. Documentation/devicetree/bindings/hwmon/lm90.txt
  3. Documentation/hwmon/lm90

Source Files


Linux Device Tree Documenation


Other Files



Enabling Driver Support

Configure kernel with "make menuconfig" (alternatively use "make xconfig" or
"make nconfig")

Menuconfig Location

Symbol: SENSORS_LM90 [=y]
Type  : tristate
Prompt: National Semiconductor LM90 and compatibles
    -> Device Drivers
      -> Hardware Monitoring support (HWMON [=y])
  Defined at drivers/hwmon/Kconfig:1017
  Depends on: HWMON [=y] && I2C [=y]

Fixes and Code Enhancements


If there are fixes and or code enhancements that need to be added to this
driver please either

1. Send the patches to the relevant Linux Kernel community as listed in the maintainers file located: Here


2.  Contact your TI representative.


TI Devices (5)

Part Number Name Product Family
LM86  ±0.75°C Remote and Local Temperature Sensor with SMBus Interface   Temperature sensors 
LM89  ±0.75°C Remote and Local Temperature Sensor with SMBus Interface  Temperature sensors 
LM90  Remote and Local Temperature Sensor with SMBus Interface  Temperature sensors 
LM99  Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface  Temperature sensors 
TMP451  1.7V-Capable Remote and Local Temp Sensor with Auto Beta, N-Factor, Filter, and Series-R Correction  Temperature sensors 

Support & Training

Try our support forums.
Search expert answers for this part Ask a new question

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.