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[Rock64] How to activate spi device and controll ws2812 leds?



Hi, I'd like to control ws2812 led's via gpio spi.

I'm using this octoprint build by ldiaz: 



I checked /boot/armbianEnv.txt and there's overlay_prefix=rock64 and after enabling spi via armbian-config also overlays=spi-spidev.

Then I rebooted but ls /dev/spi* shows nothing.


Can anyone help?


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