Re: [PATCH v4 0/6] spi: spi-fsl-dspi: Target mode improvements

[Mark Brown]

On Tue, Jul 01, 2025 at 01:42:46PM +0100, James Clark wrote:
> On 30/06/2025 4:26 pm, Vladimir Oltean wrote:
> > On Fri, Jun 27, 2025 at 11:21:36AM +0100, James Clark wrote:

> > So after your patch set, DMA mode on LS1028A becomes more performant and
> > should replace XSPI. This is an outstanding result. That can be done as
> > follow-up work.

> I wonder if latency could be higher despite increased throughput? It
> probably wouldn't be a big enough increase that anyone would care. And based
> on the structure of the driver if throughput is higher the latency might
> even be lower.

Some CAN users are likely to care, some of them care a lot about
throughput so will be happy but AIUI some are very focused on round trip
times.  That's a fairly specialist use case though.

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