The documentation of the processor describes lot's of configuration registers but is missing example of proper fields setting combination based on application.
I am looking at MPU Region Access Control Register proper/best setting in the case these will be DMA transfers made to and from L2SRAM to some of the PCR based peripherals..
The L2SRAM area is OK, so I am more looking at the PCR1..3 area setting for this MPU register.