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iMX6ULL DCP + MMU

Question asked by Stephen Bialkowski on Dec 10, 2018
Latest reply on Dec 11, 2018 by Stephen Bialkowski

Hello,

I have a custom i.MX6ULL board.  I tested a set of DCP routines on a bare metal board (no OS, just asm initialization and main).  Now I am trying to test these same routines after an OS has enabled the MMU.  No combination of logical mmap() options seems to allow the DCP direct access to OCRAM.  Is it physically possible for the DCP to operate on OCRAM when the MMU is enabled?  

 

Thanks!

Stephen

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