diff options
Diffstat (limited to 'Documentation/hwmon/nct6775')
| -rw-r--r-- | Documentation/hwmon/nct6775 | 56 |
1 files changed, 32 insertions, 24 deletions
diff --git a/Documentation/hwmon/nct6775 b/Documentation/hwmon/nct6775 index 76add4c9cd68..bd59834d310f 100644 --- a/Documentation/hwmon/nct6775 +++ b/Documentation/hwmon/nct6775 @@ -36,6 +36,14 @@ Supported chips: Prefix: 'nct6793' Addresses scanned: ISA address retrieved from Super I/O registers Datasheet: Available from Nuvoton upon request + * Nuvoton NCT6795D + Prefix: 'nct6795' + Addresses scanned: ISA address retrieved from Super I/O registers + Datasheet: Available from Nuvoton upon request + * Nuvoton NCT6796D + Prefix: 'nct6796' + Addresses scanned: ISA address retrieved from Super I/O registers + Datasheet: Available from Nuvoton upon request Authors: Guenter Roeck <linux@roeck-us.net> @@ -88,10 +96,10 @@ The mode works for fan1-fan5. sysfs attributes ---------------- -pwm[1-5] - this file stores PWM duty cycle or DC value (fan speed) in range: +pwm[1-7] - this file stores PWM duty cycle or DC value (fan speed) in range: 0 (lowest speed) to 255 (full) -pwm[1-5]_enable - this file controls mode of fan/temperature control: +pwm[1-7]_enable - this file controls mode of fan/temperature control: * 0 Fan control disabled (fans set to maximum speed) * 1 Manual mode, write to pwm[0-5] any value 0-255 * 2 "Thermal Cruise" mode @@ -99,16 +107,16 @@ pwm[1-5]_enable - this file controls mode of fan/temperature control: * 4 "Smart Fan III" mode (NCT6775F only) * 5 "Smart Fan IV" mode -pwm[1-5]_mode - controls if output is PWM or DC level +pwm[1-7]_mode - controls if output is PWM or DC level * 0 DC output * 1 PWM output Common fan control attributes ----------------------------- -pwm[1-5]_temp_sel Temperature source. Value is temperature sensor index. +pwm[1-7]_temp_sel Temperature source. Value is temperature sensor index. For example, select '1' for temp1_input. -pwm[1-5]_weight_temp_sel +pwm[1-7]_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. @@ -116,16 +124,16 @@ pwm[1-5]_weight_temp_sel If secondary temperature functionality is enabled, it is controlled with the following attributes. -pwm[1-5]_weight_duty_step +pwm[1-7]_weight_duty_step Duty step size. -pwm[1-5]_weight_temp_step +pwm[1-7]_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 +pwm[1-7]_weight_temp_step_base Temperature at which secondary temperature control kicks in. -pwm[1-5]_weight_temp_step_tol +pwm[1-7]_weight_temp_step_tol Temperature step tolerance. Thermal Cruise mode (2) @@ -133,9 +141,9 @@ Thermal Cruise mode (2) If the temperature is in the range defined by: -pwm[1-5]_target_temp Target temperature, unit millidegree Celsius +pwm[1-7]_target_temp Target temperature, unit millidegree Celsius (range 0 - 127000) -pwm[1-5]_temp_tolerance +pwm[1-7]_temp_tolerance Target temperature tolerance, unit millidegree Celsius there are no changes to fan speed. Once the temperature leaves the interval, fan @@ -143,14 +151,14 @@ speed increases (if temperature is higher that desired) or decreases (if temperature is lower than desired), using the following limits and time intervals. -pwm[1-5]_start fan pwm start value (range 1 - 255), to start fan +pwm[1-7]_start fan pwm start value (range 1 - 255), to start fan when the temperature is above defined range. -pwm[1-5]_floor lowest fan pwm (range 0 - 255) if temperature is below +pwm[1-7]_floor lowest fan pwm (range 0 - 255) if temperature is below the defined range. If set to 0, the fan is expected to stop if the temperature is below the defined range. -pwm[1-5]_step_up_time milliseconds before fan speed is increased -pwm[1-5]_step_down_time milliseconds before fan speed is decreased -pwm[1-5]_stop_time how many milliseconds must elapse to switch +pwm[1-7]_step_up_time milliseconds before fan speed is increased +pwm[1-7]_step_down_time milliseconds before fan speed is decreased +pwm[1-7]_stop_time how many milliseconds must elapse to switch corresponding fan off (when the temperature was below defined range). @@ -159,8 +167,8 @@ Speed Cruise mode (3) This modes tries to keep the fan speed constant. -fan[1-5]_target Target fan speed -fan[1-5]_tolerance +fan[1-7]_target Target fan speed +fan[1-7]_tolerance Target speed tolerance @@ -177,19 +185,19 @@ points should be set to higher temperatures and higher pwm values to achieve higher fan speeds with increasing temperature. The last data point reflects critical temperature mode, in which the fans should run at full speed. -pwm[1-5]_auto_point[1-7]_pwm +pwm[1-7]_auto_point[1-7]_pwm pwm value to be set if temperature reaches matching temperature range. -pwm[1-5]_auto_point[1-7]_temp +pwm[1-7]_auto_point[1-7]_temp Temperature over which the matching pwm is enabled. -pwm[1-5]_temp_tolerance +pwm[1-7]_temp_tolerance Temperature tolerance, unit millidegree Celsius -pwm[1-5]_crit_temp_tolerance +pwm[1-7]_crit_temp_tolerance Temperature tolerance for critical temperature, unit millidegree Celsius -pwm[1-5]_step_up_time milliseconds before fan speed is increased -pwm[1-5]_step_down_time milliseconds before fan speed is decreased +pwm[1-7]_step_up_time milliseconds before fan speed is increased +pwm[1-7]_step_down_time milliseconds before fan speed is decreased Usage Notes ----------- |