I see, that's what I am also doing!Long time I didn't install drm-kmod, just dri-xx-kmod and gpu-firmware which I know what I know which I need them.
Yes, I think it is definitely OK. graphics/drm-kmod is a meta-port that installs one of the drm-xx-kmods packages and all the firmware modules.Is it okay to delete drm-kmod and than install what I need or live as is?
I am back to what I did in the pastI used to install metaport. Now I only use drm-66-kmod. It works.