Mario Kleiner writes:
> Precise vblank timestamping is implemented via the
> usual scanout position based method. On VC4 the
> pixelvalves PV do not have a scanout position
> register. Only the hardware video scaler HVS has a
> similar register which describes which scanline for
> the output is c
Precise vblank timestamping is implemented via the
usual scanout position based method. On VC4 the
pixelvalves PV do not have a scanout position
register. Only the hardware video scaler HVS has a
similar register which describes which scanline for
the output is currently composited and stored in th
