On Fri, May 29, 2020 at 10:48:11AM -0700, Florian Fainelli wrote: > On 5/29/20 10:47 AM, Lukas Wunner wrote: > > On Thu, May 28, 2020 at 12:06:05PM -0700, Florian Fainelli wrote: > >> Make sure we clear the FIFOs, stop the block, disable the clock and > >> release the DMA channel. > > > > To what end? Why is this change necessary? Sorry but this seems like > > an awfully terse commit message. > > To ensure clocks are disabled and to save power in low power modes used > on 7211 for instance.
Thanks for the explanation, that's an important tidbit. I wasn't even aware that this SPI controller is used on SoCs beyond the Raspberry Pi ones. Does the BCM7211 use shared interrupts for this controller? Does it have DMA DREQ attached?
