Hi,
reform-tools 1.75 has just arrived in the MNT repository. Among UCM profiles for RK3588 Pocket Reform and the lpc-dkms fix for RK3588 poweroff it contains a new maintainer script snippet which will, once you upgrade to 1.75, create the following file if you are also using greetd with tuigreet:
$ cat /etc/flash-kernel/ubootenv.d/00reform2_tuigreet_loglevel
setenv bootargs "${bootargs} loglevel=3"
This will ensure that if you are using tuigreet, your /boot/boot.scr will add loglevel=3 to your ${bootargs} which in turn will reduce the loglevel such that the login interface is no longer clobbered by kernel output.
If you experience any problem with this change, please let me know.
Thank you!