Commit | Line | Data |
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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' | |
a1fac92b | 11 | Addresses scanned: I2C 0x4c, 0x4d, 0x4e |
cd4e96c5 | 12 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp411.html |
a1fac92b GR |
13 | * Texas Instruments TMP431 |
14 | Prefix: 'tmp431' | |
15 | Addresses scanned: I2C 0x4c, 0x4d | |
16 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp431.html | |
29dd3b64 GR |
17 | * Texas Instruments TMP432 |
18 | Prefix: 'tmp432' | |
19 | Addresses scanned: I2C 0x4c, 0x4d | |
20 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp432.html | |
06adbaec PT |
21 | * Texas Instruments TMP435 |
22 | Prefix: 'tmp435' | |
9aecac04 | 23 | Addresses scanned: I2C 0x48 - 0x4f |
06adbaec | 24 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp435.html |
c0a68601 AD |
25 | * Texas Instruments TMP461 |
26 | Prefix: 'tmp461' | |
27 | Datasheet: http://www.ti.com/product/tmp461 | |
cd4e96c5 AP |
28 | |
29 | Authors: | |
30 | Hans de Goede <hdegoede@redhat.com> | |
31 | Andre Prendel <andre.prendel@gmx.de> | |
32 | ||
33 | Description | |
34 | ----------- | |
35 | ||
a1fac92b | 36 | This driver implements support for Texas Instruments TMP401, TMP411, |
c0a68601 AD |
37 | TMP431, TMP432, TMP435, and TMP461 chips. These chips implement one or two |
38 | remote and one local temperature sensors. Temperature is measured in degrees | |
cd4e96c5 AP |
39 | Celsius. Resolution of the remote sensor is 0.0625 degree. Local |
40 | sensor resolution can be set to 0.5, 0.25, 0.125 or 0.0625 degree (not | |
41 | supported by the driver so far, so using the default resolution of 0.5 | |
42 | degree). | |
43 | ||
44 | The driver provides the common sysfs-interface for temperatures (see | |
a1fac92b | 45 | Documentation/hwmon/sysfs-interface under Temperatures). |
cd4e96c5 | 46 | |
a1fac92b GR |
47 | The TMP411 and TMP431 chips are compatible with TMP401. TMP411 provides |
48 | some additional features. | |
cd4e96c5 AP |
49 | |
50 | * Minimum and Maximum temperature measured since power-on, chip-reset | |
51 | ||
52 | Exported via sysfs attributes tempX_lowest and tempX_highest. | |
53 | ||
54 | * Reset of historical minimum/maximum temperature measurements | |
55 | ||
56 | Exported via sysfs attribute temp_reset_history. Writing 1 to this | |
57 | file triggers a reset. | |
29dd3b64 GR |
58 | |
59 | TMP432 is compatible with TMP401 and TMP431. It supports two external | |
60 | temperature sensors. | |
c0a68601 AD |
61 | |
62 | TMP461 is compatible with TMP401. It supports offset correction | |
63 | that is applied to the remote sensor. | |
64 | ||
65 | * Sensor offset values are temperature values | |
66 | ||
67 | Exported via sysfs attribute tempX_offset |