Rockpro64 fan control

[Aaron J. Siegel]

Hello

The fan on my Rockpro64 does not work with fedora 34 installed.  The
file /sys/class/hwmon/hwmon1/pwm1 has the value 255. All the solution I
have found were for Debian/Ubuntu and require installing firmware.

Thank you
Aaron

[Peter Robinson]

> The fan on my Rockpro64 does not work with fedora 34 installed.  The
> file /sys/class/hwmon/hwmon1/pwm1 has the value 255. All the solution I
> have found were for Debian/Ubuntu and require installing firmware.

All the pieces should be upstream, is the pwm-fan module loaded?

P

[Dennis Gilmore]

Try running "echo 110 > /sys/class/hwmon/hwmon1/pwm1" then bump it back to
255 I have found that to work on a different rockchip based device

Dennis

On Tue, Dec 7, 2021, 05:30 Peter Robinson  wrote:
> > The fan on my Rockpro64 does not work with fedora 34 installed.  The
> > file /sys/class/hwmon/hwmon1/pwm1 has the value 255. All the solution I
> > have found were for Debian/Ubuntu and require installing firmware.
>
> All the pieces should be upstream, is the pwm-fan module loaded?
>
> P
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[Aaron J. Siegel]

Dennis and Peter

Thank you, your solutions worked.  The kernel module pwm_fan is loaded.
 I wrote 110 to the pwm1 file and the fan started. I was able to
modulate the fan speed up to 255.

Aaron

On Tue, 2021-12-07 at 07:12 -0600, Dennis Gilmore wrote:
> Try running "echo 110 > /sys/class/hwmon/hwmon1/pwm1" then bump it
> back to 255 I have found that to work on a different rockchip based
> device
>
> Dennis
>
> On Tue, Dec 7, 2021, 05:30 Peter Robinson 
> wrote:
> > > The fan on my Rockpro64 does not work with fedora 34 installed.
> >
> > The
> > > file /sys/class/hwmon/hwmon1/pwm1 has the value 255. All the
> >
> > solution I
> > > have found were for Debian/Ubuntu and require installing
> >
> > firmware.
> >
> > All the pieces should be upstream, is the pwm-fan module loaded?
> >
> > P
> > _______________________________________________
> > arm mailing list -- [e-mail]
> > To unsubscribe send an email to [e-mail]
> > Fedora Code of Conduct:
> > https://docs.fedoraproject.org/en-US/project/code-of-conduct/
> > List Guidelines:
> > https://fedoraproject.org/wiki/Mailing_list_guidelines
> > List Archives:
>
> https://lists.fedoraproject.org/archives/list/[e-mail]
> > Do not reply to spam on the list, report it:
> > https://pagure.io/fedora-infrastructure