Cache coherence question in OMAP L137

Hi,

This is my use case in simple terms. I read an audio file from the SD card and use EDMA to write it to the McASP. When the audio file is read from the SD card to the buffer "Audio" it is only updated in L2. However when I do the DMA, it starts from RAM so I run into a cache coherence issue. I am new to C6000 and not sure what is the best way to handle this. 

Thanks in advance for your help.

Best,

Shaminda