On Fri, 2025-11-07 at 14:41 +0200, Imre Deak wrote:
Disable Panel Replay on MST links until it's properly implemented. For instance the required VSC SDP is not programmed on MST and FEC is not enabled if Panel Replay is enabled.
Fixes: 3257e55d3ea7 ("drm/i915/panelreplay: enable/disable panel replay") Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/15174 Cc: Jouni Högander jouni.hogander@intel.com Cc: Animesh Manna animesh.manna@intel.com Cc: stable@vger.kernel.org # v6.8+ Signed-off-by: Imre Deak imre.deak@intel.com
Reviewed-by: Jouni Högander jouni.hogander@intel.com
drivers/gpu/drm/i915/display/intel_psr.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index 05014ffe3ce1d..54fc30cfad84c 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -626,6 +626,10 @@ static void _panel_replay_init_dpcd(struct intel_dp *intel_dp) struct intel_display *display = to_intel_display(intel_dp); int ret;
- /* TODO: Enable Panel Replay on MST once it's properly
implemented. */
- if (intel_dp->mst_detect == DRM_DP_MST)
return;ret = drm_dp_dpcd_read_data(&intel_dp->aux, DP_PANEL_REPLAY_CAP_SUPPORT, &intel_dp->pr_dpcd, sizeof(intel_dp->pr_dpcd)); if (ret < 0)