[coreboot] $7 cheap FT232H board as EHCI debug dongle for coreboot - would it work?

[Mike Banon]

Good day! I am looking for the dirt cheap EHCI debug dongle. Initially
I found these instructions for FX2LP -
https://www.coreboot.org/DIY_EHCI_debug_dongle - but they require a
lot of manual soldering/mods which depend on your boards revision and
I am not sure if the currently produced boards are 100% compatible
with the wiki instructions

But then I noticed a coreboot has USBDEBUG_DONGLE_FTDI_FT232H option:
" Use this with FT232H usb-to-uart. Configuration is hard-coded to use
8n1, no flow control "

Kyösti Mälkki tested it " with gizmosphere/gizmo1 Explorer add-on
board, which exposes the following device:
   0x0403 Future Technology Devices International, Ltd
   0x6014 FT232H Single HS USB-UART/FIFO IC "
but gizmo1 is expensive and I am not a fan of the single board
computers (SBCs) : they all require the binary blobs which could
contain the scary backdoors

However, there are $7 cheap FT232H boards with USB available at AliExpress:

https://www.aliexpress.com/item/NEW-CJMCU-FT232H-Multifunction-High-Speed-USB-to-JTAG-UART-FIFO-SPI-I2C-Module/32818305310.html

I plan to get a couple of these boards, connect them to each other
with 1P 2.54mm wires, plug the 1st board into master PC
(coreboot-PC-under-debug) USB 2.0 port and the 2nd board into slave PC
(another coreboot PC which will be logging the debug info)

Please tell me: could this setup work in theory, or there are obvious
shortcomings that could prevent it from working?

Best regards,
Mike Banon