Hi, > This also means that we cannot have unspec for planes layout. Device either > expects planes in separate buffers or in one buffer with some offsets, there > cannot be mixed cases. Hmm. Is it useful to support both? Or maybe support the "one buffer + offsets" case only? Splitting one buffer into multiple smaller ones internally if needed shouldn't be a problem, and it would simplify the interface a bit ... cheers, Gerd