How to adjust the CPU voltage of BPI-M2+

This article introduced how to adjust the VCC-CPUX voltage of the BPI-M2+ with replacing a register of power circuit.



With any hardware change or component soldering.

You will LOST all warranty of your Banana Pi!


When I did something system image build and test tasks for the BPI-M2+ with Allwinner H3 before it on stock last year, I have received a Engineer Sample (ES) form SINOVOIP, the manufacturer of Banana Pi.

The Banana Pi Community Forum have received a lot of reports of the too high VCC-CPUX voltage causing horrible heat issue from other developers.

There is a easy to measure the VCC-CPUX voltage of your BPI-M2+.

This picture shows the Test Point (TP: VCPU) of VCC-CPUX.


If you get a result like me, Congratulation! You got a ES. (R. I. P. the warranty


Okay, the next step is replace the reference register in the feedback circuit of the voltage regulator.



I have no 0402 register in my component library, so I use the 0805. (I’m sorry for that.




And it works. :)



According to the AW’s whitepaper H3 should work at 1.008GHz max_freq, but I tested ok with the 1.2GHz sys_config. Lucky~


This is the cpuinfo_cur_freq result of running cpuburn-a7 ( and

The idle CPU temperature is about 15 degrees Celsius lower than work at 1.4 V.


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