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Andre Prendel1915fb72009-09-15 17:18:12 +02001Kernel driver tmp421
2====================
3
4Supported chips:
5 * Texas Instruments TMP421
6 Prefix: 'tmp421'
7 Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f
8 Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html
9 * Texas Instruments TMP422
10 Prefix: 'tmp422'
11 Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f
12 Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html
13 * Texas Instruments TMP423
14 Prefix: 'tmp423'
15 Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f
16 Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html
17
18Authors:
19 Andre Prendel <andre.prendel@gmx.de>
20
21Description
22-----------
23
24This driver implements support for Texas Instruments TMP421, TMP422
25and TMP423 temperature sensor chips. These chips implement one local
26and up to one (TMP421), up to two (TMP422) or up to three (TMP423)
27remote sensors. Temperature is measured in degrees Celsius. The chips
28are wired over I2C/SMBus and specified over a temperature range of -40
29to +125 degrees Celsius. Resolution for both the local and remote
30channels is 0.0625 degree C.
31
32The chips support only temperature measurement. The driver exports
33the temperature values via the following sysfs files:
34
35temp[1-4]_input
36temp[2-4]_fault