Hi Dave,
this tag contains a fix for a regression introduced in v4.14-rc1 with
commit 790cb4c7c954 ("drm/imx: lock scanout transfers for consecutive
bursts"), which breaks display output on i.MX53. Also there are two
patches to solve display output instability issues on i.MX6QP with the
prefetch/resolve feature.
regards
Philipp
The following changes since commit 8a5776a5f49812d29fe4b2d0a2d71675c3facf3f:
Linux 4.14-rc4 (2017-10-08 20:53:29 -0700)
are available in the git repository at:
git://git.pengutronix.de/git/pza/linux.git tags/imx-drm-fixes-2017-10-12
for you to fetch changes up to 11aff4b4c7c4b7257660ef890920f2ac72911ed0:
gpu: ipu-v3: pre: implement workaround for ERR009624 (2017-10-11 12:04:24 +0200)
----------------------------------------------------------------
drm/imx: i.MX5 regression fix and i.MX6QP PRE/PRG stability fixes
- Disable channel burst locking on IPUv3EX (i.MX51) and IPUv3M (i.MX53).
This fixes a regression introduced by commit 790cb4c7c954 ("drm/imx: lock
scanout transfers for consecutive bursts").
- Give PRG a head start. Waiting for both double buffers to fill up before
enabling the IPU improves startup reliability.
- Avoid PRE control register updates during unsafe window, workaround for
ERR009624.
----------------------------------------------------------------
Lucas Stach (2):
gpu: ipu-v3: prg: wait for double buffers to be filled on channel startup
gpu: ipu-v3: pre: implement workaround for ERR009624
Philipp Zabel (1):
gpu: ipu-v3: Allow channel burst locking on i.MX6 only
drivers/gpu/ipu-v3/ipu-common.c | 8 ++++++++
drivers/gpu/ipu-v3/ipu-pre.c | 29 +++++++++++++++++++++++++++++
drivers/gpu/ipu-v3/ipu-prg.c | 7 +++++++
3 files changed, 44 insertions(+)
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