I think you can try to compare versus SAMv7 SPI+DMA driver that is working well and see if there are obvious differences.
BR, Petro On Wed, May 17, 2023, 9:18 PM Simon Filgis <si...@ingenieurbuero-filgis.de> wrote: > D-Cache flush? > > -- > Ingenieurbüro-Filgis > USt-IdNr.: DE305343278 > -- > sent by mobile phone > > Tim Hardisty <t...@hardisty.co.uk> schrieb am Mi., 17. Mai 2023, 20:05: > > > I am working on getting DMA working on the SPI peripheral of the SAMA5D2. > > > > DMA reads now work well, but the writes take absolutely forever…unless I > > have dma debug info enabled, when write transactions (to a GD25Q flash) > do > > then work. > > > > I’m working through it, as it sounds like a race condition or other > > timing/sequence problem but if anyone by any chance has encountered > > anything similar, clues or suggestions would be most welcome! > > > > Thx, > > > > Tim > > >
