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Commit 1915fb70 authored by Andre Prendel's avatar Andre Prendel Committed by Jean Delvare
Browse files

hwmon: (tmp421) Add documentation 



Add documentation for the tmp421 driver.

Signed-off-by: default avatarAndre Prendel <andre.prendel@gmx.de>
Acked-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
parent 9410700b

Documentation/hwmon/tmp421

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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 0x2a, 0x4c, 0x4d, 0x4e and 0x4f

    Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html

  * Texas Instruments TMP423

    Prefix: 'tmp423'

    Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f

    Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html



Authors:

	Andre Prendel <andre.prendel@gmx.de>



Description

-----------



This driver implements support for Texas Instruments TMP421, TMP422

and TMP423 temperature sensor chips. These chips implement one local

and up to one (TMP421), up to two (TMP422) 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