Good suggestion – thanks! From: Petro Karashchenko <petro.karashche...@gmail.com> Reply to: "dev@nuttx.apache.org" <dev@nuttx.apache.org> Date: Wednesday, 17 May 2023 at 19:28 To: "dev@nuttx.apache.org" <dev@nuttx.apache.org> Subject: Re: Odd DMA issue
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<mailto:si...@ingenieurbuero-filgis.de>> wrote: D-Cache flush? -- Ingenieurbüro-Filgis USt-IdNr.: DE305343278 -- sent by mobile phone Tim Hardisty <t...@hardisty.co.uk<mailto: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 >
