Mario Kleiner <mario.kleiner.de@xxxxxxxxx> writes: > With instantaneous high precision vblank timestamping > that updates at leading edge of vblank, the emulated > "hw vblank counter" from vblank timestamping which > increments at leading edge of vblank, and reliable > page flip execution and completion at leading edge > of vblank, we should meet the requirements for fast > vblank irq disable/enable. > > Testing against rpi-4.12-rc5 Linux kernel with timing > measurement equipment indicates this works fine, > so allow immediate vblank disable for power saving. > > For debugging in case of unexpected trouble, booting > with kernel cmdline option drm.vblankoffdelay=0 > would keep vblank irqs on to approximate old behavior. Reviewed and applied. Thanks!
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