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You did not address any feedback from v3. >> >> Missed feedback: >> >> This *must* be defined in top-level. > > Answered in the other reply. > >> I still think this must have some sort of maxItems. I accept your >> explanation that you could have multiple memory pools, but I don't think >> 2147000 pools is possible. Make it 4, 8 or 32. > > Can do - if you can explain the benefit of that. > It turned out during further investigations that swiotlb actually only allows a single restricted DMA pool per device. So this discussion auto-resolves, bindings and code will be adjusted in v5. Jan -- Siemens AG, Technology Linux Expert Center