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drm/amd/display: Handle seamless boot stream
commit 170390e upstream A seamless boot stream has hardware resources assigned to it, and adding a new stream means rebuilding the current assignment. It is desirable to avoid this situation since it may cause light-up issues on the VGA monitor on USB-C. This commit swaps the seamless boot stream to pipe 0 (if necessary) to ensure that the pipe context matches. Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Co-developed-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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