From c6341f008a315bdfddcca93892bfe702fb7b8dbe Mon Sep 17 00:00:00 2001 From: Anthony Wang Date: Tue, 9 Feb 2021 14:42:35 -0500 Subject: [PATCH] drm/amd/display: disable seamless boot for DP MST [Why] Seamless boot over DP MST is not POR, but is not explicitly disabled. [How] Add check for DP MST and return false in dc_validate_seamless_boot_timing. Signed-off-by: Anthony Wang Acked-by: Bindu Ramamurthy Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/core/dc.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 702c266e60f8..03882004e935 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1213,8 +1213,9 @@ bool dc_validate_seamless_boot_timing(const struct dc *dc, unsigned int i, enc_inst, tg_inst = 0; // Seamless port only support single DP and EDP so far - if (sink->sink_signal != SIGNAL_TYPE_DISPLAY_PORT && - sink->sink_signal != SIGNAL_TYPE_EDP) + if ((sink->sink_signal != SIGNAL_TYPE_DISPLAY_PORT && + sink->sink_signal != SIGNAL_TYPE_EDP) || + sink->sink_signal == SIGNAL_TYPE_DISPLAY_PORT_MST) return false; /* Check for enabled DIG to identify enabled display */