AM6548: Access external memory with PRU on AM65

Part Number:AM6548

Hello,

just a quick question: I would like to access external memory from PRU on AM6548. I found several examples how to to it with the AM35x or AM4x. On the AM3x, the OCP-Interface must be enabled to access external memory from PRU for example.

However, I found no example for AM65. The PRU seems to be connected via CBASS0 interconnect to MSMC.

So, do I need to configure the ICSSG somehow to access the DDR RAM (NAVSS0_NBSS_MSMC1_DDRLO_INT at address 0x0080000000) ? Or just create a pointer to that address to read/write? (I've tested this, it did not work however).
Do I need to configure CBASS0?

I would appreciate any hints!

Best regards,
Thomas