From bbd8decd4123648ddeba2be485bc7e1a3117bfe4 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Tue, 4 Dec 2012 09:08:29 -0800 Subject: hwmon: (nct6775) Add support for weighted fan control The NCT677X series support weighted fan control. In this mode, a secondary temperature source is used in addition to the primary temperature source to control fan speed. Add support for this feature. Signed-off-by: Guenter Roeck --- Documentation/hwmon/nct6775 | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'Documentation/hwmon') diff --git a/Documentation/hwmon/nct6775 b/Documentation/hwmon/nct6775 index b4fe6bc4d37..3f5587e3909 100644 --- a/Documentation/hwmon/nct6775 +++ b/Documentation/hwmon/nct6775 @@ -92,6 +92,25 @@ Common fan control attributes pwm[1-5]_temp_sel Temperature source. Value is temperature sensor index. For example, select '1' for temp1_input. +pwm[1-5]_weight_temp_sel + Secondary temperature source. Value is temperature + sensor index. For example, select '1' for temp1_input. + Set to 0 to disable secondary temperature control. + +If secondary temperature functionality is enabled, it is controlled with the +following attributes. + +pwm[1-5]_weight_duty_step + Duty step size. +pwm[1-5]_weight_temp_step + Temperature step size. With each step over + temp_step_base, the value of weight_duty_step is added + to the current pwm value. +pwm[1-5]_weight_temp_step_base + Temperature at which secondary temperature control kicks + in. +pwm[1-5]_weight_temp_step_tol + Temperature step tolerance. Thermal Cruise mode (2) ----------------------- -- cgit v1.2.3-70-g09d2