TDA3XEVM: Mulitple CSI2 communication to TDA3x

Part Number:TDA3XEVM

Hi,

I want use 4-chip cascade of AWR1243 sensor for my long range radar application. I want to send the data from the 4 AWR1243 chips through CSI2 to TDA3x/2x. 

1. How do I connect the 4 CSI2 lanes from the 4 AWR1243 sensors to one CSI2 port of TDA3x. As of my understanding there in only one CSI2 connection in TDA3x. Is there a standard solution for this? Does TI recommend any specific easy method ?

2. what will be the scenario if want to use TDA2x instead of TDA3x?

Thanks in Advance,

GP