MMU access on BB-xM?

Dear All,

I want to access MMU. But it can't to access.
MMU1 (Camera MMU) 0x480BD400 256 bytes
MMU2 (IVA2.2 MMU) 0x5D000000 256 bytes

But I can access GPIO5 to turn on/off LED D7 on BB-xM
Ans: GPIO5_BASE+0xB2000000 (virtual address) -> MMU -> physical
address

How can I do to access MMU?

Thanks very much!