On Sun, Nov 29, 2020 at 11:33 AM Michele Xiloyannis
<[email protected]> wrote:
>
> Hi all,
>
> I am working with SPI, on both a BB AI and a BBBlue and on both machines a 
> transfer on the using the ioctl() system call (spidev1.0 interface), takes 
> approx 3ms. Is the kernel adding some overhead for debugging there that could 
> be removed?
> https://groups.google.com/g/beagleboard/c/Owld0Inun-0/m/JDfcanRb0I4J
>
> Would appreciate any help on how to do this.
> Thanks a lot and have a great Sunday.


SPI_DEBUG was disabled a long time ago, what image/kernel are you running?

sudo /opt/scripts/tools/version.sh

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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