https://bugzilla.kernel.org/show_bug.cgi?id=202449
--- Comment #5 from Nicholas Kazlauskas (nicholas.kazlauskas@amd.com) --- Created attachment 280873 --> https://bugzilla.kernel.org/attachment.cgi?id=280873&action=edit 0001-drm-amd-display-Attach-VRR-properties-for-eDP-connec.patch
I'm not sure if this will actually let you use variable refresh rate features but this should attach the properties for your eDP panel at least.