Re: [PATCH 2/4] spi: spi-fsl-dspi: Use non-coherent memory for DMA

Vladimir Oltean
2025-06-11T09:01:12Z

On Tue, Jun 10, 2025 at 11:56:34AM -0400, Frank Li wrote:
> Can you add performance beneafit information after use non-coherent memory
> in commit message to let reviewer easily know your intention.

To expand on that, you can post the output of something like this
(before and after):
$ spidev_test --device /dev/spidev1.0 --bpw 8 --size 256 --cpha --iter 10000000 --speed 10000000
where /dev/spidev1.0 is an unconnected chip select with a dummy entry in
the device tree.