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hwmon: (nct6775) Add support for fan speed attributes

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Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Guenter Roeck
2012-12-04 07:56:24 -08:00
parent aa136e5dad
commit 1c65dc365e
2 changed files with 518 additions and 3 deletions
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Documentation/hwmon/nct6775
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@@ -53,8 +53,9 @@ triggered if the rotation speed has dropped below a programmable limit. On
NCT6775F, fan readings can be divided by a programmable divider (1, 2, 4, 8,
16, 32, 64 or 128) to give the readings more range or accuracy; the other chips
do not have a fan speed divider. The driver sets the most suitable fan divisor
itself; specifically, it doubles the divider value each time a fan speed reading
returns an invalid value. Some fans might not be present because they share pins
itself; specifically, it increases the divider value each time a fan speed
reading returns an invalid value, and it reduces it if the fan speed reading
is lower than optimal. Some fans might not be present because they share pins
with other functions.
Voltage sensors (also known as IN sensors) report their values in millivolts.