[Pkg-raspi-maintainers] SPI does not work on Raspberry 4, Debian Linux kernel

[Anton Gladky]

Dear all,

I am trying to use Debian on Raspberry Pi to control some devices
per SPI and I2C interfaces.

I2C is working OK. But SPI - not. spi_bcm2835 module is loaded,
but /dev/spi* is not appearing.

Does anybody know, how can it be fixed? I did not find a lot of information
on this topic. Most of the links are related to Raspbian, where SPI is
working perfectly.

Thank you. Regards

Anton