Odroid HC4 built-in fan question

[pjrough]

Hi there,

I was not able to find detailed information about built-in fan functionality for odroid hc4.

I have never seen it spinning. is that correct? is is simply because the temperature didn't overcome 60 deg C?

is there any way to change the fan settings, so it start let's say at 40 deg C and not 60?
What is the supported power for built in fan socket?

appreciate any information.

[tobetter]

Please refer to the link and let me know if it works with your OS setup.
https://docs.linuxfactory.or.kr/guides/ ... ml#sensors

[pjrough]

thanks tobetter it worked out.

A part found an existing topic and touched these numbers to change the initial settings:

I'm running Debian 10 (installed via netboot) but not seeing the above thermal trip points, only the following:

$ cat /sys/devices/virtual/thermal/thermal_zone0/trip_point_0_temp
85000
$ cat /sys/devices/virtual/thermal/thermal_zone0/trip_point_1_temp
95000
$ cat /sys/devices/virtual/thermal/thermal_zone0/trip_point_2_temp
110000

Does this look right? I don't think my fan is running either. Is it just a case of adding those additional trip points 4 and 5 as per above?