Comment # 3 on bug 1128216 from Takashi Iwai

The latest Leap 15.1 kernel does support the chip, so it should work as is
without installing the TW kernel.  You can try the Leap 15.1 kernel on top of
the existing Leap 15.0 system, too, instead of OBS Kernel:stable one.

So this is RESOLVED/FIXED for Leap 15.1.  If you install Leap 15.1 and it still
doesn't work for your device, please reopen the bug.  Thanks.