hwmon: (nct6775) Add support for weighted fan control

[firefly-linux-kernel-4.4.55.git] / Documentation / hwmon / nct6775

diff --git a/Documentation/hwmon/nct6775 b/Documentation/hwmon/nct6775
index b4fe6bc4d371b4241388faf05bdd8e00e8fa357c..3f5587e39093285b8ffe80c828497a95263e7c97 100644 (file)
--- 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)
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