4b0ab7dd37
[why] during It's possible to call dcn_validate_bandwidth with no plane. In that case, as we are only intersted in if output timing is supported or not, even if we cannot support native resolution, we still want to support lower resolution if it is valid [how] if there exist no surface, make viewport/rec_out size at max 1080p. It is already known that 1080p x 6(max # of pipes) is supported, so if we fail validation, it is because of the stream Signed-off-by: Su Sung Chung <Su.Chung@amd.com> Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Acked-by: Leo Li <sunpeng.li@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.