redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

Documentation: pwm-fan: Add description for RPM support 

This adds a short description for the new RPM support of the pwm-fan
driver.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
hifive-unleashed-5.2
Stefan Wahren 2019-04-11 15:30:10 +02:00 committed by Guenter Roeck
parent c7366e9514
commit 285d7483aa
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Documentation/hwmon/pwm-fan
View File

@ -15,3 +15,6 @@ The driver implements a simple interface for driving a fan connected to
a PWM output. It uses the generic PWM interface, thus it can be used with
a range of SoCs. The driver exposes the fan to the user space through
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.