[WHY] There is a bug in HW that causes P-State to hang when DPG is enabled in certain conditions. [HOW] The solution is to force MIN_TTU_VBLANK register to maximum value whenever DPG has been enabled. Make stream do a full update on test pattern change, so that the TTUs get updated. When DPG is enabled, update the ttu_regs.min_ttu_vblank field of each pipe in the stream's topology to the maximum value (0xffffff). v2: squash in build fix for when DCN is not defined (Alex) Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Anson Jacob <Anson.Jacob@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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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.
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