X96 Mini: serial console access

TO COMPLETE

The Q6X V2.2 board (ref. 17355, S905W SoC) exposes a serial console (UART) that is useful for troubleshooting.

BoardQ6X V2.2, ref. 17355
SoCAmlogic S905W
UARTFour pads GND, VCC, RX, TX, near the eMMC (SEC810 chip)
AdapterArduino Nano (ATmega328P + CH340) as a troubleshooting USB-TTL adapter
Warning. An Arduino Nano uses 5 V logic, the board uses 3.3 V. Check the voltage of the serial link before any connection, or use a 3.3 V adapter. TODO(nico): confirm the level and the wiring used.
GND, VCC, RX, TX pads near the eMMC chip.
  1. GND
  2. VCC
  3. RX
  4. TX

Evidence

TODO(nico): provide the UART boot log, the output of /proc/cpuinfo and the capture of the seller listing (identifiers masked).