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Andre Prendelcd4e96c2009-06-15 18:39:49 +02001Kernel driver tmp401
2====================
3
4Supported chips:
5 * Texas Instruments TMP401
6 Prefix: 'tmp401'
7 Addresses scanned: I2C 0x4c
8 Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp401.html
9 * Texas Instruments TMP411
10 Prefix: 'tmp411'
Guenter Roecka1fac922013-03-15 12:55:08 -070011 Addresses scanned: I2C 0x4c, 0x4d, 0x4e
Andre Prendelcd4e96c2009-06-15 18:39:49 +020012 Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp411.html
Guenter Roecka1fac922013-03-15 12:55:08 -070013 * Texas Instruments TMP431
14 Prefix: 'tmp431'
15 Addresses scanned: I2C 0x4c, 0x4d
16 Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp431.html
Guenter Roeck29dd3b62013-03-28 01:36:44 -070017 * Texas Instruments TMP432
18 Prefix: 'tmp432'
19 Addresses scanned: I2C 0x4c, 0x4d
20 Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp432.html
Andre Prendelcd4e96c2009-06-15 18:39:49 +020021
22Authors:
23 Hans de Goede <hdegoede@redhat.com>
24 Andre Prendel <andre.prendel@gmx.de>
25
26Description
27-----------
28
Guenter Roecka1fac922013-03-15 12:55:08 -070029This driver implements support for Texas Instruments TMP401, TMP411,
Guenter Roeck29dd3b62013-03-28 01:36:44 -070030TMP431, and TMP432 chips. These chips implement one or two remote and
31one local temperature sensors. Temperature is measured in degrees
Andre Prendelcd4e96c2009-06-15 18:39:49 +020032Celsius. Resolution of the remote sensor is 0.0625 degree. Local
33sensor resolution can be set to 0.5, 0.25, 0.125 or 0.0625 degree (not
34supported by the driver so far, so using the default resolution of 0.5
35degree).
36
37The driver provides the common sysfs-interface for temperatures (see
Guenter Roecka1fac922013-03-15 12:55:08 -070038Documentation/hwmon/sysfs-interface under Temperatures).
Andre Prendelcd4e96c2009-06-15 18:39:49 +020039
Guenter Roecka1fac922013-03-15 12:55:08 -070040The TMP411 and TMP431 chips are compatible with TMP401. TMP411 provides
41some additional features.
Andre Prendelcd4e96c2009-06-15 18:39:49 +020042
43* Minimum and Maximum temperature measured since power-on, chip-reset
44
45 Exported via sysfs attributes tempX_lowest and tempX_highest.
46
47* Reset of historical minimum/maximum temperature measurements
48
49 Exported via sysfs attribute temp_reset_history. Writing 1 to this
50 file triggers a reset.
Guenter Roeck29dd3b62013-03-28 01:36:44 -070051
52TMP432 is compatible with TMP401 and TMP431. It supports two external
53temperature sensors.