Linux Driver for LM70 LM70SW-LINUX (ACTIVE)

Description & Features

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The Linux driver supports the LM70 series of Temperature Sensors. The Linux driver supports communication through the SPI bus and interfaces with the Hardware Monitoring sub-system.


Linux Mainline Status

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

Supported Devices:

  • lm70
  • tmp121
  • lm71
  • lm74


Linux Source Files

The files associated with this device are:

  1. drivers/hwmon/lm70.c
  2. Documentation/hwmon/lm70

Source Files


Other Files



Enabling Driver Support

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

Menuconfig Location

Symbol: SENSORS_LM70 [=y]
Type  : tristate
Prompt: National Semiconductor LM70 and compatibles
    -> Device Drivers
      -> Hardware Monitoring support (HWMON [=y])
  Defined at drivers/hwmon/Kconfig:903
  Depends on: HWMON [=y] && SPI_MASTER [=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 (4)

Part Number Name Product Family
LM70  ±2°C  Temperature Sensor with SPI Interface  Temperature sensors 
LM71  ±1.5°C Temperature Sensor with SPI Interface  Temperature sensors 
LM74  ±1.25°C Temperature Sensor with SPI Interface  Temperature sensors 
TMP121  ±1.5°C 2.7V to 5.5V digital temperature sensor with SPI interface and -40 to 125°C  Temperature sensors 

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