On 12/07/2023 15:38, Martin Povišer wrote: > Hi all, > > see attached a driver for the SIO coprocessor found on recent Apple > SoCs. This coprocessor provides general DMA services, it can feed > many peripherals but so far it seems it will only be useful for > audio output over HDMI/DisplayPort. So the driver here only supports > the DMA_CYCLIC mode of transactions with the focus being on audio. > There's a downstream prototype ALSA driver the DMA driver is being > tested against. > > Some of the boilerplate code in implementing the dmaengine interface > was lifted from apple-admac.c. Among other things these two drivers > have in common that they implement the DMA_CYCLIC regime on top of > hardware/coprocessor layer supporting linear transactions only. > > The binding schema saw two RFC rounds before and has a reviewed-by > from Rob. > https://lore.kernel.org/asahi/167693643966.613996.10372170526471864080.robh@xxxxxxxxxx Thank you for explanation. Then this is v3, not v1. No need for resending, but if it happens, consider naming it v4. :) Best regards, Krzysztof
