swh:1:snp:173f8deb0c56c557784b4fd217e7608ac6197844
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Tip revision: b9bbe6ed63b2b9f2c9ee5cbd0f2c946a2723f4ce authored by Linus Torvalds on 17 May 2020, 23:48:37 UTC
Linux 5.7-rc6
Linux 5.7-rc6
Tip revision: b9bbe6e
tmp421.rst
Kernel driver tmp421
====================
Supported chips:
* Texas Instruments TMP421
Prefix: 'tmp421'
Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f
Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html
* Texas Instruments TMP422
Prefix: 'tmp422'
Addresses scanned: I2C 0x4c, 0x4d, 0x4e and 0x4f
Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html
* Texas Instruments TMP423
Prefix: 'tmp423'
Addresses scanned: I2C 0x4c and 0x4d
Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html
* Texas Instruments TMP441
Prefix: 'tmp441'
Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f
Datasheet: http://www.ti.com/product/tmp441
* Texas Instruments TMP442
Prefix: 'tmp442'
Addresses scanned: I2C 0x4c and 0x4d
Datasheet: http://www.ti.com/product/tmp442
Authors:
Andre Prendel <andre.prendel@gmx.de>
Description
-----------
This driver implements support for Texas Instruments TMP421, TMP422,
TMP423, TMP441, and TMP442 temperature sensor chips. These chips
implement one local and up to one (TMP421, TMP441), up to two (TMP422,
TMP442) or up to three (TMP423) remote sensors. Temperature is measured
in degrees Celsius. The chips are wired over I2C/SMBus and specified
over a temperature range of -40 to +125 degrees Celsius. Resolution
for both the local and remote channels is 0.0625 degree C.
The chips support only temperature measurement. The driver exports
the temperature values via the following sysfs files:
**temp[1-4]_input**
**temp[2-4]_fault**