In the example present at this path (ti-processor-sdk-rtos-j721e-evm-08_01_00_13/mcusw/mcal_drv/mcal/examples/Spi/mcspi_app/soc/j721e/mcu2_1) they are saying it is internal loopback test for MCU_MCSPI1 and MCSPI3 and are doing pad configurations also . According to TRM MCSPI3 is connected as a master to MCU_MCSPI1 by default at power-up. MCU_MCSPI1 and MCSPI3
may be optionally mapped to external device pads.
If these two SPI's are internally connected to each other why padconfig is required only in first place?
