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author | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-04-17 12:46:29 +0300 |
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committer | Guenter Roeck <linux@roeck-us.net> | 2019-04-17 20:37:23 +0300 |
commit | 7ebd8b66dd9e5a0b65e5ee5e2b8e7ca382ec97b7 (patch) | |
tree | 9db30159bd32bec125c7d49e80a79bb7c4da0c8e /Documentation/hwmon/ds620.rst | |
parent | b04f2f7d387b3160883c2a1f5e2285483a791e82 (diff) | |
download | linux-7ebd8b66dd9e5a0b65e5ee5e2b8e7ca382ec97b7.tar.xz |
docs: hwmon: Add an index file and rename docs to *.rst
Now that all files were converted to ReST format, rename them
and add an index.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon/ds620.rst')
-rw-r--r-- | Documentation/hwmon/ds620.rst | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/Documentation/hwmon/ds620.rst b/Documentation/hwmon/ds620.rst new file mode 100644 index 000000000000..2d686b17b547 --- /dev/null +++ b/Documentation/hwmon/ds620.rst @@ -0,0 +1,38 @@ +Kernel driver ds620 +=================== + +Supported chips: + + * Dallas Semiconductor DS620 + + Prefix: 'ds620' + + Datasheet: Publicly available at the Dallas Semiconductor website + + http://www.dalsemi.com/ + +Authors: + Roland Stigge <stigge@antcom.de> + based on ds1621.c by + Christian W. Zuckschwerdt <zany@triq.net> + +Description +----------- + +The DS620 is a (one instance) digital thermometer and thermostat. It has both +high and low temperature limits which can be user defined (i.e. programmed +into non-volatile on-chip registers). Temperature range is -55 degree Celsius +to +125. Between 0 and 70 degree Celsius, accuracy is 0.5 Kelvin. The value +returned via sysfs displays post decimal positions. + +The thermostat function works as follows: When configured via platform_data +(struct ds620_platform_data) .pomode == 0 (default), the thermostat output pin +PO is always low. If .pomode == 1, the thermostat is in PO_LOW mode. I.e., the +output pin PO becomes active when the temperature falls below temp1_min and +stays active until the temperature goes above temp1_max. + +Likewise, with .pomode == 2, the thermostat is in PO_HIGH mode. I.e., the PO +output pin becomes active when the temperature goes above temp1_max and stays +active until the temperature falls below temp1_min. + +The PO output pin of the DS620 operates active-low. |