Look at this file to find out what panel you have:
/sys/devices/platform/fde30000.dsi/fde30000.dsi.0/mnt_pocket_reform_panel_version
The next version of reform-tools will include output for this: bin/reform-check: print Pocket Reform panel version (22ef61a5) · Commits · Reform / MNT Reform Tools · GitLab · MNT Source