On Tue, Mar 29, 2022 at 7:33 PM Manivannan Sadhasivam <mani@xxxxxxxxxx> wrote: > [Yann] > > As for Prabhakar's answer, the IDMA here is inside our IP, and not used in > > any other IP. So I'm not sure it is really relevant to move that to another > > dmaengine driver. > > Okay, I think this justification makes sense. I was worried of DMA IPs that get > sandwiched into many peripherals like the one on Renesas platforms. It turned > out that each subsystem has to add internal DMA support for it :/ That is a justified worry. Qualcomm has "BAM DMA" (I think it is called?) which is added to each IP that needs DMA. drivers/mmc/host/mmci_qcom_dml.c It's for older Qualcomm platforms but I *think* it is actually not just used for the MMCI, just noone ever got around to adding it to any other peripheral? Srini do you know? Yours, Linus Walleij
