(subset) [PATCH] drm/vc4: crtc: Increase setup cost in core clock calculation to handle extreme reduced blanking

Maxime Ripard maxime at cerno.tech
Thu Feb 9 09:05:33 UTC 2023


On Fri, 27 Jan 2023 15:55:58 +0100, Maxime Ripard wrote:
> The formula that determines the core clock requirement based on pixel
> clock and blanking has been determined experimentally to minimise the
> clock while supporting all modes we've seen.
> 
> A new reduced blanking mode (4kp60 at 533MHz rather than the standard
> 594MHz) has been seen that doesn't produce a high enough clock and
> results in "flip_done timed out" error.
> 
> [...]

Applied to drm/drm-misc (drm-misc-fixes).

Thanks!
Maxime



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