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Video memory physical address

I'm trying to capture images on an OMAP EVM running Arago Linux.  V4L2 doesn't seem to have a driver for my sensor and so I've not yet succeeded.

I can talk to my sensor via the I2C interface, and I can confirm that my sensor is sending sync and data.  As a quick test of my sensor (and not as a final solution)  I'd like to find the physical memory where the image data is being stored.  Is there some way to find where the image data is being sent?