vortigont

Hi @rusatch - yes, however this is actually even easier to enable now; no patching and custom kernels should be needed   If you build Armbian from the latest top-of-tree for a sunxi device (starting with the 4.17.y kernel), two new DT overlays are provided that you can load via "/boot/armbianEnv.txt" that provide this regulator and will enable higher clock speeds to be used.  The original thread regarding this (with instructions) can be found here:  https://forum.armbian.com/topic/5051-nanopi-neo2-cpu-frequency-issue/?do=findComment&comment=58181.  I'll repeat these instructions here for others:
 
If you would like to try to run your board at 1.3GHz, and your board has a regulator on GPIO PL6 that supports 1.3v (e.g., Orange Pi Zero Plus2 H5 with Q5 MOSFET present, Orange Pi Zero Plus with Q5 MOSFET present, etc.), then all you would have to do is the following:
 
1.  Make sure that you know what you are doing (!).  If you enable the following on a board that does not properly have access to the CPU regulator - i.e., unmodified OrangePi board with missing Q5 MOSFET, or a board that does not have a compatible 1.1v/1.3v regulator controlled via GPIO PL6 - then your board will almost certainly crash on boot!
 
2.  Edit /boot/armbianEnv.txt, and add these lines:
overlay_prefix=sun50i-h5 overlays=gpio-regulator-1.3v cpu-clock-1.3GHz If you have other overlays specified in your /boot/armbianEnv.txt, simply append these two new ones following them, for example:
overlay_prefix=sun50i-h5 overlays=spi-spidev usbhost2 usbhost3 gpio-regulator-1.3v cpu-clock-1.3GHz  
3.  Edit /etc/default/cpufrequtils, and set the MAX_SPEED definition to 1300000:
# WARNING: this file will be replaced on board support package (linux-root-...) upgrade ENABLE=true MIN_SPEED=408000 MAX_SPEED=1300000 GOVERNOR=ondemand  
4.  Reboot the board
 
That should be it!  Following reboot, you can verify proper operation at the higher CPU clock speeds using "cpufreq-info" (for example).

Hi! Just wanted to share my experince.
I received Orange Pi Zero Plus and it was a board without Q5 FET soldered.
I could not find BSN20 FET, so I tried to check for an alternative.
 - First one to try and solder it was a SI2302 N-channel FET with marking A2SHB. This one was a failure. I could boot Armbian with nightly kernel 4.17.14, but  armbianmon utility showed "---" instead of the CPU clock. And I was unable to boot kernel with "gpio-regulator-1.3v" "cpu-clock-1.3GHz" overlays, it just hanged soon after loading kernel modules.
 - The second one I found was 2N7002 N-channel FET with marking K72-P2 (this one I salvaged out of an old MoBo). And it was a success! Board was able to boot with overlays enabled and it runs fine with clocks up to 1300MHz, yay! Now my board works just fine, but it heats like hell under stress, even with a good heat sink. Thanks that throttling works just fine too.
I think the diffrence in FETs is that we need one with lower Vgs threshold voltage than the one with higher drain current.
 
Hope this could be useful to somebody.
Thanks to everyone who made this tweak possible!