It seems to be the patch 0004-rpi-use-firmware-provided-device-tr.patch[2]. After removing these patches, the boot process continues. (tested on RPi1 and RPi3) [2] https://build.opensuse.org/package/view_file/openSUSE:Factory:ARM/u-boot/0004-rpi-Use-firmware-provided-device-tr.patch?expand=1