Questions about Banana Pi Router R2 (Ethernet, SPI, UART)

Banana Pi BPI-R4/BPI-R3 Mini/BPI-R3/BPI-R64/BPI-R2
1

Hey,

We are interested in buying the Banana Pi Router R2 and have a few questions concerning specific technical details. First, what is the maximum baud rate for the UART interface and can the debug UART be used as a second normal interface? Second, what is the maximum SPI clock speed? And third, does the onboard network controller support promiscuous mode on all 4 LAN interfaces?

It would be super helpful if some could answer these questions or point me to the correct data sheets.

Thanks and have nice day max123