two spi display, how to get the same display on /dev/fb0 at every boot

i have two spi displays attached to a pocketbeagle 2, each on a different spi buss

when rebooting, /dev/fb0 does not always go to the same display

is there a way to control this?

Debian Trixie IOT Image 2026-07-24

6.18.40-arm64-k3-r48

Sounds like a race-condition on the device identification / binding.

Perhaps an alias could help you pinning the two displays?

Caveat: Aliases have to be in the base .dts file!