On Tue, Nov 17, 2020 at 04:03:48PM +0800, Michael Sit Wei Hong wrote: > Enabling custom prepare and submit function to overcome DMA limitation. > > In the Intel KeemBay solution, the DW AXI-based DMA has a limitation on > the number of DMA blocks per transfer. In the case of 16 bit audio ASoC > would allocate blocks exceeding the DMA block limitation. I'm still not sure the hardware has such a limitation. The Synopsys IP supports linked list (LLI) transfers and I hardly can imagine the list has any limitation. Even though, one can always emulate LLI in software how it's done in the DesignWare AHB DMA driver. I have briefly read chapter 4.6 "AXI_DMA" of Keem Bay TRM and didn't find any errata or limits like this. -- With Best Regards, Andy Shevchenko
