Is there any method of rotating the display at the vc4 kms level?
Something like we had for the firmware driver, with a rotation setting in config.txt?
I know it can be done by xorg, but that's done in xorg modesetting and that has a bug with vsync.
Here is a bug report: https://gitlab.freedesktop.org/xorg/xserver/issues/996
I would like to try rotating the display directly with the lower level kernel driver. Is that possible?