Documentation/hwmon/lm93.rst

61 voltages. To set fan speed, the LM93 has two PWM outputs that are each
107 The LM93 can also override the #PROCHOT pins by driving a PWM signal onto
115 contains a value controlling the duty cycle for the PWM signal used when
129 	If a fan is driven using a low-side drive PWM, the tachometer
138 enabled if the PWM output frequency is 22500 Hz (see below).
140 Manual PWM
143 The LM93 has a fixed or override mode for the two PWM outputs (although, there
152 PWM mode is disabled, the value of pwm1 and pwm2 indicates the current duty
155 PWM Output Frequency
158 The LM93 supports several different frequencies for the PWM output channels.
164 PWM Output Frequencies (in Hz):
167 Automatic PWM
171 points of configuration.  To start, each PWM output can be bound to any
172 combination of eight control sources.  The final PWM is the largest of all
173 individual control sources to which the PWM output is bound.
191 The function y = f(x) takes a source temperature x to a PWM output y.  This
230 will use the minimum PWM value.  These values are found in the sysfs files
235 PWM Spin-Up Cycle
238 A spin-up cycle occurs when a PWM output is commanded from 0% duty cycle to
241 file has the same representation as other PWM duty cycle values. The
251 #PROCHOT and #VRDHOT PWM Ramping
254 If the #PROCHOT or #VRDHOT signals are asserted while bound to a PWM output
255 channel, the LM93 will ramp the PWM output up to 100% duty cycle in discrete
268 exceeds this limit, the LM93 will immediately drive both PWM outputs to 100%.
294 prochot<n>_override	    force #PROCHOT assertion as PWM
295 prochot_override_duty_cycle duty cycle for the PWM signal used when
297 prochot<n>_interval	    #PROCHOT PWM sampling interval
300 pwm<n>_auto_channels	    select control sources for PWM outputs