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The biggest issue is that Linuxcnc will require building from source as the RPi5 images don’t have Linuxcnc packages built from the most recent code base. Editing config.txt to turn on spi is a trivial matter.

Give me a day or 2 and I’ll generate an image with the most recent Linuxcnc & Mesaflash.

The 7C80 will work with the RPI5 using the hm2_spix driver.

Note that some 7C80s were shipped with firmware that does
not work with the RPI5. These cards can be re-programmed
on a RPI4 if that's convenient. All the distributed bitfiles are OK.
 

Hi all, 
after swapping our Raspberry Pi4 with a 5 things didn't work anymore as they did before, and thanks to this forum, as far as I understood there is no SPI support yet, right? 
I have also read that "rodw" you have created an image builder, and "Cornholio" you managed to patch it so it works right?
As we are trying to run the mesa 7c80 with a Raspberry Pi5, is there an image available currently that supports this combination? If not what would be the steps to "patch" it together? 

Thanks a lot in advance