RTOS/AM6548: icssg diag testing under PDK5.2

Part Number:AM6548

Tool/software: TI-RTOS

Dear TI

I do some test about ICSSG on EVM board.

I plugin interpose card on β version EVM board. Finally  the testing result is not PASS.

So I want to know under the latest PDK5.2 whether it could support using interpose card to do ICSSG testing or not?

And there is other condition when I use CCS to do step by step debug. there is something wrong that I can not enter the function BoardDiag_icssgemacLoopbackTest  to do step by step debug.