On Mon, 22 Apr 2024, gareth.yu@xxxxxxxxx wrote: > From: Gareth Yu <gareth.yu@xxxxxxxxx> > > Re-train the main link once HPD happens without link status Please address review before sending more versions. Please include a patch changelog, and indicate patch version with git send-email/format-patch -vN option because otherwise we have no clue. BR, Jani. > > Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10902 > Cc : Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay@xxxxxxxxx> > Cc : Matt Roper <matthew.d.roper@xxxxxxxxx> > Cc : Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > Signed-off-by: Gareth Yu <gareth.yu@xxxxxxxxx> > --- > drivers/gpu/drm/i915/display/intel_dp.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c > index e05e25cd4a94..52ab549e6d08 100644 > --- a/drivers/gpu/drm/i915/display/intel_dp.c > +++ b/drivers/gpu/drm/i915/display/intel_dp.c > @@ -5849,8 +5849,13 @@ intel_dp_detect(struct drm_connector *connector, > /* Can't disconnect eDP */ > if (intel_dp_is_edp(intel_dp)) > status = edp_detect(intel_dp); > - else if (intel_digital_port_connected(encoder)) > + else if (intel_digital_port_connected(encoder)) { > status = intel_dp_detect_dpcd(intel_dp); > + if (status == connector_status_connected && intel_dp->is_mst && > + !intel_dp_mst_link_status(intel_dp)) > + if (intel_dp_retrain_link(encoder, ctx)) > + status = connector_status_disconnected; > + } > else > status = connector_status_disconnected; -- Jani Nikula, Intel
