Hello,
Here is the feedback from RADAR expert:
You use the RSDK_ DEMO, which is fully adapted to RDK hardware without any modification. One thing may not be clear: 10M refers to the baud rate, and the default value is also 10M SPI clock should be configured as 80MHz or 100MHz.
The best suggestion is that you first use RDK hardware for testing, and then do your hardware. RDK hardware has been used in exhibitions for many times, running RSDK_ DEMO has no errors.

We usually don't spend too much time supporting customers' own hardware, because it also involves hardware reliability, which we don't know.
If you has just started to develop radar application, I suggest they choose S32R294 with better performance and lower price. This part has also been completely developed and has complete demo and files.
The following are two sets of hardware that can be used for radar evaluation:


Best regards,
Peter