Controlling Power Supply Voltage for Antminer Software

Hey everyone, I'm looking for the documentation on the APW9 Power Supply for the Antminer S17pro. I checked the BraiinsOS software, but couldn’t find any module for it. I saw that there's supposed to be a module called "axi_iic_psu" mentioned here: https://github.com/braiins/braiins/tree/bos-devel/open/hw/zynq-io-am1-s9. But I can't locate that "axi_iic_psu" anywhere. What I really need is the protocol details so I can manually control the PSU output voltage, like with an external microcontroller over I2C. Is there a chance there’s a separate document for APW9 control? How can I track down this missing software module or its description? Thanks a lot for any help! If this question is better suited for another forum or section, just let me know.

Maybe you can find something in this: Antminer APW9 https://www.zeusbtc.com/manuals/Antminer-APW9-power-supply-repair-guide.asp Antminer APW9+ https://www.zeusbtc.com/manuals/Antminer-APW9-plus-power-supply-repair-guide.asp