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Diffstat (limited to 'Documentation/hwmon/pwm-fan.rst')
| -rw-r--r-- | Documentation/hwmon/pwm-fan.rst | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/hwmon/pwm-fan.rst b/Documentation/hwmon/pwm-fan.rst index 82fe96742fee..f77998b204ef 100644 --- a/Documentation/hwmon/pwm-fan.rst +++ b/Documentation/hwmon/pwm-fan.rst @@ -18,3 +18,15 @@ the hwmon's sysfs interface. The fan rotation speed returned via the optional 'fan1_input' is extrapolated from the sampled interrupts from the tachometer signal within 1 second. + +The driver provides the following sensor accesses in sysfs: + +=============== ======= ======================================================= +fan1_input ro fan tachometer speed in RPM +pwm1_enable rw keep enable mode, defines behaviour when pwm1=0 + 0 -> disable pwm and regulator + 1 -> enable pwm; if pwm==0, disable pwm, keep regulator enabled + 2 -> enable pwm; if pwm==0, keep pwm and regulator enabled + 3 -> enable pwm; if pwm==0, disable pwm and regulator +pwm1 rw relative speed (0-255), 255=max. speed. +=============== ======= ======================================================= |