Merge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6

* 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
  hwmon/vt1211: Add probing of alternate config index port
  hwmon/f71805f: Fix a race condition
  hwmon/abituguru: Fix unchecked return status
  hwmon: New driver for the Analog Devices ADM1029
  hwmon/w83627ehf: Add support for the W83627DHG chip
  hwmon: Use subsys_initcall
  hwmon/lm70: Make lm70_remove a __devexit function
  hwmon: Cleanup a bogus legacy comment
  hwmon: Simplify the locking model of two drivers
  hwmon: Drop unused mutexes in two drivers
  hwmon/it87: Add PWM base frequency control

1 files changed, 10 insertions, 0 deletions

diff --git a/Documentation/hwmon/it87 b/Documentation/hwmon/it87
index 74a80992d237..c0528d6f9ace 100644
--- a/Documentation/hwmon/it87
+++ b/Documentation/hwmon/it87
@@ -135,6 +135,16 @@ Give 0 for unused sensor. Any other value is invalid. To configure this at
 startup, consult lm_sensors's /etc/sensors.conf. (2 = thermistor;
 3 = thermal diode)
 
+
+Fan speed control
+-----------------
+
 The fan speed control features are limited to manual PWM mode. Automatic
 "Smart Guardian" mode control handling is not implemented. However
 if you want to go for "manual mode" just write 1 to pwmN_enable.
+
+If you are only able to control the fan speed with very small PWM values,
+try lowering the PWM base frequency (pwm1_freq). Depending on the fan,
+it may give you a somewhat greater control range. The same frequency is
+used to drive all fan outputs, which is why pwm2_freq and pwm3_freq are
+read-only.