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w1: w1_therm: Document Maxim MAX31850 thermoelement IF. 

w1_therm driver supports now MAX31850, too. Add it to documentation
and fix a small typo.

Signed-off-by: Markus Reichl <m.reichl@fivetechno.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Markus Reichl 2022-03-21 13:04:11 +01:00 committed by Jonathan Corbet
parent ca3d0b5dfc
commit 7808c93412
1 changed files with 7 additions and 2 deletions
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9
Documentation/w1/slaves/w1_therm.rst
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@ -6,7 +6,8 @@ Supported chips:
* Maxim ds18*20 based temperature sensors.
* Maxim ds1825 based temperature sensors.
* GXCAS GC20MH01 temperature sensor.
* GXCAS GX20MH01 temperature sensor.
* Maxim MAX31850 thermoelement interface.
Author: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
@ -15,7 +16,7 @@ Description
-----------
w1_therm provides basic temperature conversion for ds18*20, ds28ea00, GX20MH01
devices.
and MAX31850 devices.
Supported family codes:
@ -137,3 +138,7 @@ bits in Config register; R2 bit in Config register enabling 13 and 14 bit
resolutions. The device is powered up in 14-bit resolution mode. The conversion
times specified in the datasheet are too low and have to be increased. The
device supports driver features ``1`` and ``2``.
MAX31850 device shares family number 0x3B with DS1825. The device is generally
compatible with DS1825. The higher 4 bits of Config register read all 1,
indicating 15, but the device is always operating in 14-bit resolution mode.