Thanks for the correction.
At the moment I have the following values
root@openwrt:~# cat /sys/class/hwmon/hwmon2/fan1_target
root@openwrt:~# cat /sys/class/thermal/thermal_zone0/temp
which I find quite noisy.
The router seems to not do much.
top is showing CPU at 0% and CPU load is
Load average: 0.00 0.01 0.00
The traffic is below much 100 Kbit/s on all of the interfaces.
For comparison, my Raspberry Pi 3 shows 59.1 C (nice coincidence ;)) CPU temperature, but with 40% CPU utilization and load 0.6 (for all 3 values).
I cannot find anything about CPU frequency scaling. Is this, or something similar, possible? Or my only option is to allow higher CPU temperatures via the device tree?
I am using the fan integrated into the enclosure. No fan on the radiator on top of the CPU.