The mosfets arrived and finaly managed to make a test, and it works! Thank you again 5kft !
For me it worked with this Armbian version: Armbian_5.34.171121_Orangepizeroplus2-h5_Ubuntu_xenial_next_4.13.14.img, then compiled with the build compilation tips shown by 5kft in a previous post. It seems it runs at 1296 Mhz from the start, I didn't need to update cpufrequtils.
Surprisingly, it stays in idle at a lower temperature than before. Idle now is 38 celsius -although with a temperature meter is around 45. Before it was 55 - real it was with 2-3 degrees more (ambient temperature around 25).
20:33:36: 1296MHz 0.02 0% 0% 0% 0% 0% 0% 38.2°C 0/11
pi@orangepizeroplus2:~$ cpufreq-info -c 1
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to email@example.com, please.
analyzing CPU 1:
CPUs which run at the same hardware frequency: 0 1 2 3
CPUs which need to have their frequency coordinated by software: 0 1 2 3
maximum transition latency: 6.24 ms.
hardware limits: 240 MHz - 1.30 GHz
available frequency steps: 240 MHz, 408 MHz, 648 MHz, 816 MHz, 912 MHz, 960 MHz, 1.01 GHz, 1.06 GHz, 1.10 GHz, 1.15 GHz, 1.25 GHz, 1.30 GHz
available cpufreq governors: conservative, userspace, powersave, ondemand, performance, schedutil
current policy: frequency should be within 1.30 GHz and 1.30 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 1.30 GHz.
cpufreq stats: 240 MHz:0.04%, 408 MHz:1.33%, 648 MHz:0.14%, 816 MHz:0.12%, 912 MHz:0.08%, 960 MHz:0.08%, 1.01 GHz:0.07%, 1.06 GHz:0.04%, 1.10 GHz:0.05%, 1.15 GHz:0.04%, 1.25 GHz:0.04%, 1.30 GHz:97.98% (254)
pi@orangepizeroplus2:~$ sudo sysbench --test=cpu --cpu-max-prime=20000 --num-threads=4 run && cat /sys/devices/virtual/thermal/thermal_zone0/temp
sysbench 0.4.12: multi-threaded system evaluation benchmark
Running the test with following options:
Number of threads: 4
Doing CPU performance benchmark
Maximum prime number checked in CPU test: 20000
Test execution summary:
total time: 7.0661s
total number of events: 10000
total time taken by event execution: 28.2527
approx. 95 percentile: 2.83ms
events (avg/stddev): 2500.0000/1.87
execution time (avg/stddev): 7.0632/0.00
I very much hope that those BSN20s will work - I bought mine from that very same seller
Regarding increasing the clocks, I've attached a subset of my test patchset for the current mainline sunxi-next kernel (4.14.y) that you could start from. Hopefully you should be able to just copy this to your "armbian/build/userpatches/kernel/sunxi-next/" directory, then build your kernel as normal (e.g., "./compile.sh KERNEL_ONLY=yes KERNEL_CONFIGURE=no KERNEL_KEEP_CONFIG=no BRANCH=next BETA=yes BUILD_KSRC=no BOARD=orangepizeroplus2-h5"). Note that you'll need to update your "/etc/default/cpufrequtils" configuration to set the new min/max speeds (don't forget to reboot or restart the cpufreq daemon after doing this).
When you do the build, make sure the patch step succeeds - the "z" at the beginning of the filename helps ensure that it is the last patch applied.
(Note also that on reboot the HDMI driver crashes on my Plus2 - as a temporary workaround I disabled HDMI in the DTS as well. Also I noticed that the default Armbian OPi plus2 patchset adds the regulator entry - I was confusing this change with my Neo Plus2 patch for this.)