Is it possible to use the eDMA for VPU en/decoding, specifically for transferring raw frames from/to the VPU? From what I see, the eDMA can do scatter-gather operations. This means it could in theory use virtual memory blocks (as long as they are located in the physical RAM and not paged to disk), because even if these are discontinuous in physical memory, the scatter-gather operation could read from the fragments. The big advantage would be that it would not be depending on the CMA, which is prone to fragmentation problems. But from what I recall, the eDMA is limited to some modules?
