Please refer to official documentation by SUSE. This page only covers extra information and other tips on top of official documentation.
Raspberry PI 4
via SD Card
Get the pre-configured image for aarch64 from https://get.opensuse.org/leapmicro
xzcat openSUSE-Leap-Micro.aarch64-Default.raw.xz | dd bs=4M of=/dev/sda iflag=fullblock oflag=direct status=progress; sync
You'll need ignition or combustion to set up access (root password) You can use this simple example from MicroOS. Or follow official documentation for SLE Micro. There is also a video tutorial covering this.