mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-12-28 16:56:26 +00:00
0ebbd89d4d
Sysfs interface of the tmp421 driver was extended in the recent patches so lets update the documentation to reflect that. Signed-off-by: Krzysztof Adamski <krzysztof.adamski@nokia.com> Link: https://lore.kernel.org/r/6ae22fdf18513ddd09f430ef9c5e46c17e27886b.1634206677.git.krzysztof.adamski@nokia.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
77 lines
1.8 KiB
ReStructuredText
77 lines
1.8 KiB
ReStructuredText
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 0x4c, 0x4d, 0x4e and 0x4f
|
|
|
|
Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html
|
|
|
|
* Texas Instruments TMP423
|
|
|
|
Prefix: 'tmp423'
|
|
|
|
Addresses scanned: I2C 0x4c and 0x4d
|
|
|
|
Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html
|
|
|
|
* Texas Instruments TMP441
|
|
|
|
Prefix: 'tmp441'
|
|
|
|
Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f
|
|
|
|
Datasheet: https://www.ti.com/product/tmp441
|
|
|
|
* Texas Instruments TMP442
|
|
|
|
Prefix: 'tmp442'
|
|
|
|
Addresses scanned: I2C 0x4c and 0x4d
|
|
|
|
Datasheet: https://www.ti.com/product/tmp442
|
|
|
|
Authors:
|
|
|
|
Andre Prendel <andre.prendel@gmx.de>
|
|
|
|
Description
|
|
-----------
|
|
|
|
This driver implements support for Texas Instruments TMP421, TMP422,
|
|
TMP423, TMP441, and TMP442 temperature sensor chips. These chips
|
|
implement one local and up to one (TMP421, TMP441), up to two (TMP422,
|
|
TMP442) 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**
|
|
|
|
Each sensor can be individually disabled via Devicetree or from sysfs
|
|
via:
|
|
|
|
**temp[1-4]_enable**
|
|
|
|
If labels were specified in Devicetree, additional sysfs files will
|
|
be present:
|
|
|
|
**temp[1-4]_label**
|