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[ Upstream commit 9e7d03e8b0 ]
[Description]
- For SubVP transitioning into MPO, we want to
use a minimal transition to prevent transient
underflow
- Transitioning a phantom pipe directly into a
"real" pipe can result in underflow due to the
HUBP still having it's "phantom" programming
when HUBP is unblanked (have to wait for next
VUPDATE of the new OTG)
- Also ensure subvp pipe lock is acquired early
enough for programming in dc_commit_state_no_check
- When disabling phantom planes, enable phantom OTG
first so the disable gets the double buffer update
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.