mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-12-28 16:56:26 +00:00
38d9f06c57
TMP461 is almost identical to TMP451, which is already supported by the
lm90 driver. At the same time, unlike other sensors from the TMP401
compatible series, it only supports 8-bit temperature read operations,
and it supports negative temperatures when configured for its default
temperature range, and it supports a temperature offset register.
Supporting this chip in the tmp401 driver adds unnecessary complexity.
Remove its support from this driver and support the chip with the lm90
driver instead.
Fixes: 24333ac26d ("hwmon: (tmp401) use smb word operations instead of 2 smb byte operations")
Reported-by: David T. Wilson <david.wilson@nasa.gov>
Cc: David T. Wilson <david.wilson@nasa.gov>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
81 lines
2.0 KiB
ReStructuredText
81 lines
2.0 KiB
ReStructuredText
Kernel driver tmp401
|
|
====================
|
|
|
|
Supported chips:
|
|
|
|
* Texas Instruments TMP401
|
|
|
|
Prefix: 'tmp401'
|
|
|
|
Addresses scanned: I2C 0x4c
|
|
|
|
Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp401.html
|
|
|
|
* Texas Instruments TMP411
|
|
|
|
Prefix: 'tmp411'
|
|
|
|
Addresses scanned: I2C 0x4c, 0x4d, 0x4e
|
|
|
|
Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp411.html
|
|
|
|
* Texas Instruments TMP431
|
|
|
|
Prefix: 'tmp431'
|
|
|
|
Addresses scanned: I2C 0x4c, 0x4d
|
|
|
|
Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp431.html
|
|
|
|
* Texas Instruments TMP432
|
|
|
|
Prefix: 'tmp432'
|
|
|
|
Addresses scanned: I2C 0x4c, 0x4d
|
|
|
|
Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp432.html
|
|
|
|
* Texas Instruments TMP435
|
|
|
|
Prefix: 'tmp435'
|
|
|
|
Addresses scanned: I2C 0x48 - 0x4f
|
|
|
|
Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp435.html
|
|
|
|
|
|
|
|
Authors:
|
|
|
|
- Hans de Goede <hdegoede@redhat.com>
|
|
- Andre Prendel <andre.prendel@gmx.de>
|
|
|
|
Description
|
|
-----------
|
|
|
|
This driver implements support for Texas Instruments TMP401, TMP411,
|
|
TMP431, TMP432, and TMP435 chips. These chips implement one or two
|
|
remote and one local temperature sensors. Temperature is measured in degrees
|
|
Celsius. Resolution of the remote sensor is 0.0625 degree. Local
|
|
sensor resolution can be set to 0.5, 0.25, 0.125 or 0.0625 degree (not
|
|
supported by the driver so far, so using the default resolution of 0.5
|
|
degree).
|
|
|
|
The driver provides the common sysfs-interface for temperatures (see
|
|
Documentation/hwmon/sysfs-interface.rst under Temperatures).
|
|
|
|
The TMP411 and TMP431 chips are compatible with TMP401. TMP411 provides
|
|
some additional features.
|
|
|
|
* Minimum and Maximum temperature measured since power-on, chip-reset
|
|
|
|
Exported via sysfs attributes tempX_lowest and tempX_highest.
|
|
|
|
* Reset of historical minimum/maximum temperature measurements
|
|
|
|
Exported via sysfs attribute temp_reset_history. Writing 1 to this
|
|
file triggers a reset.
|
|
|
|
TMP432 is compatible with TMP401 and TMP431. It supports two external
|
|
temperature sensors.
|