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26e5817e39
[why] build scaling param is overriding validation policy regarding small viewport support. Even if ODM + windowed MPO is not supported. The decision has to be made at the time of validation. When building scaling params, we might be building an initial dc state as an input to DML validation. The initial state is not supposed to be always valid and we rely on DML to modify the initial dc state and determine the final validation result. This check is pre judging validation result when building the initial dc state. This causes an issue where we are transitioning from desktop only ODM combine 2:1 to ODM bypass with 2 planes. In this case we are building an initial state with with ODM 2:1 combine + 2 planes. This is indeed not supported but DML is about to modify the state so it no longer uses ODM combine. Before it reaches DML, dc resource already fails validation because it checks that the initial state is not supported by our policy. This overrides the ODM decision to validate this state with ODM combine disabled. Therefore causes an unexpected validation failure when the secondary plane is added on one side of the screen. Reviewed-by: Dillon Varone <dillon.varone@amd.com> Acked-by: Stylon Wang <stylon.wang@amd.com> Signed-off-by: Wenjing Liu <wenjing.liu@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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.