https://bugs.freedesktop.org/show_bug.cgi?id=109206
--- Comment #45 from Ondrej Lang ondrej@lang.sk --- I just came across this article, which seems to suggest a fix for the issue mentioned in this thread is coming in a future linux-firmware update:
https://www.phoronix.com/scan.php?page=news_item&px=AMD-Raven1-Skip-The-...
It seem s patch has already been proposed to the kernel tree so hopefully this will fix the problem with some laptop models with the Raven Ridge 1 CPUs.
Patch url:
https://lists.freedesktop.org/archives/amd-gfx/2019-May/034307.html