https://github.com/torvalds/linux
Revision eb9dfdd1ed40357b99a4201c8534c58c562e48c9 authored by Dom Cobley on 18 March 2021, 16:13:28 UTC, committed by Maxime Ripard on 08 April 2021, 12:55:02 UTC
Experimentally have found PV on hvs4 reports fifo full
error with expected settings and does not with one less

This appears as:
[drm:drm_atomic_helper_wait_for_flip_done] *ERROR* [CRTC:82:crtc-3] flip_done timed out

with bit 10 of PV_STAT set "HVS driving pixels when the PV FIFO is full"

Fixes: c8b75bca92cb ("drm/vc4: Add KMS support for Raspberry Pi.")
Signed-off-by: Dom Cobley <popcornmix@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210318161328.1471556-3-maxime@cerno.tech
1 parent 35d65ab
History
Tip revision: eb9dfdd1ed40357b99a4201c8534c58c562e48c9 authored by Dom Cobley on 18 March 2021, 16:13:28 UTC
drm/vc4: crtc: Reduce PV fifo threshold on hvs4
Tip revision: eb9dfdd
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