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?

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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
>


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