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* [PATCH v1] drm/i915/display: Allow port sync on PTL
@ 2026-10-12  4:04 Mitul Golani
  2026-10-12  4:21 ` ✓ CI.KUnit: success for " Patchwork
                   ` (5 more replies)
  0 siblings, 6 replies; 7+ messages in thread
From: Mitul Golani @ 2026-10-12  4:04 UTC (permalink / raw)
  To: intel-gfx; +Cc: intel-xe, stable

Some dual-SST tiled displays exhibit visual corruption on PTL, with
one tile's image vertically shifted or wrapped by a random amount
that changes on every hotplug.

PTL supports port sync, so allow it to be used to avoid these
display issues.

Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/8991
Fixes: 05cffc074938 ("drm/i915/display: Implement Wa_16024710867")
Cc: stable@vger.kernel.org
Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index a46ab5d3d70f..a0aff087fafa 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -4629,7 +4629,7 @@ intel_ddi_port_sync_transcoders(const struct intel_crtc_state *ref_crtc_state,
 	 * From, xe3lpd onwards we have defeatured this with reference to
 	 * Wa_16024710867
 	 */
-	if (!IS_DISPLAY_VER(display, 9, 20))
+	if (!IS_DISPLAY_VER(display, 9, 30))
 		return 0;
 
 	if (!intel_crtc_has_type(ref_crtc_state, INTEL_OUTPUT_DP))
-- 
2.48.1


^ permalink raw reply related	[flat|nested] 7+ messages in thread
end of thread, other threads:[~2026-10-12  6:28 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-10-12  4:04 [PATCH v1] drm/i915/display: Allow port sync on PTL Mitul Golani
2026-10-12  4:21 ` ✓ CI.KUnit: success for " Patchwork
2026-10-12  4:28 ` [PATCH v1] " sashiko-bot
2026-10-12  5:00 ` Kandpal, Suraj
2026-10-12  5:00 ` ✓ Xe.CI.BAT: success for " Patchwork
2026-10-12  5:12 ` ✓ i915.CI.BAT: " Patchwork
2026-10-12  6:28 ` ✓ Xe.CI.FULL: " Patchwork

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