Commit | Line | Data |
---|---|---|
cd4e96c5 AP |
1 | Kernel driver tmp401 |
2 | ==================== | |
3 | ||
4 | Supported 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' | |
11 | Addresses scanned: I2C 0x4c | |
12 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp411.html | |
13 | ||
14 | Authors: | |
15 | Hans de Goede <hdegoede@redhat.com> | |
16 | Andre Prendel <andre.prendel@gmx.de> | |
17 | ||
18 | Description | |
19 | ----------- | |
20 | ||
21 | This driver implements support for Texas Instruments TMP401 and | |
22 | TMP411 chips. These chips implements one remote and one local | |
23 | temperature sensor. Temperature is measured in degrees | |
24 | Celsius. Resolution of the remote sensor is 0.0625 degree. Local | |
25 | sensor resolution can be set to 0.5, 0.25, 0.125 or 0.0625 degree (not | |
26 | supported by the driver so far, so using the default resolution of 0.5 | |
27 | degree). | |
28 | ||
29 | The driver provides the common sysfs-interface for temperatures (see | |
30 | /Documentation/hwmon/sysfs-interface under Temperatures). | |
31 | ||
32 | The TMP411 chip is compatible with TMP401. It provides some additional | |
33 | features. | |
34 | ||
35 | * Minimum and Maximum temperature measured since power-on, chip-reset | |
36 | ||
37 | Exported via sysfs attributes tempX_lowest and tempX_highest. | |
38 | ||
39 | * Reset of historical minimum/maximum temperature measurements | |
40 | ||
41 | Exported via sysfs attribute temp_reset_history. Writing 1 to this | |
42 | file triggers a reset. |