FAILED: patch "[PATCH] drm/i915/quirks: Limit eDP rate to HBR2 on HP Pavilion Plus" failed to apply to 6.18-stable tree

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* FAILED: patch "[PATCH] drm/i915/quirks: Limit eDP rate to HBR2 on HP Pavilion Plus" failed to apply to 6.18-stable tree
@ 2026-09-29  8:15 gregkh
  2026-09-29 14:12 ` [PATCH 6.18.y 1/4] drm/i915/psr: Disable Panel Replay on Dell XPS 14 DA14260 as a quirk Sasha Levin
  0 siblings, 1 reply; 5+ messages in thread
From: gregkh @ 2026-09-29  8:15 UTC (permalink / raw)
  To: ankit.k.nautiyal, annoycc, jani.nikula, nemesa.garg, stable; +Cc: stable


The patch below does not apply to the 6.18-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.18.y
git checkout FETCH_HEAD
git cherry-pick -x 5271d81f99dd01d983d439930eb056952485e15e
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026092942-evaluator-keenness-e26b@gregkh' --subject-prefix 'PATCH 6.18.y' 'HEAD^..'

Possible dependencies:



thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 5271d81f99dd01d983d439930eb056952485e15e Mon Sep 17 00:00:00 2001
From: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Date: Mon, 7 Sep 2026 09:15:55 +0530
Subject: [PATCH] drm/i915/quirks: Limit eDP rate to HBR2 on HP Pavilion Plus
 14-ew1

The eDP panel on the HP Pavilion Plus Laptop 14-ew1xxx advertises HBR3
while leaving the TPS4 support bit clear. The output however flickers, once
link is trained with HBR3.

Until commit 8c9006283e4b ("Revert "drm/i915/dp: Reject HBR3 when sink
doesn't support TPS4"") such sinks were capped at HBR2 by the TPS4 check
which incidentally kept this panel stable. That check was reverted because
other panels legitimately need HBR3 without advertising TPS4, and the
per-machine QUIRK_EDP_LIMIT_RATE_HBR2 was introduced to handle the affected
machines instead.

Add the machine to the list of devices that need the
QUIRK_EDP_LIMIT_RATE_HBR2.

Fixes: 8c9006283e4b ("Revert "drm/i915/dp: Reject HBR3 when sink doesn't support TPS4"")
Reported-by: Annoy Cc <annoycc@gmail.com>
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/work_items/16743
Cc: <stable@vger.kernel.org> # v6.18+
Tested-by: Annoy Cc <annoycc@gmail.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Nemesa Garg <nemesa.garg@intel.com>
Link: https://patch.msgid.link/20260907034555.2753846-1-ankit.k.nautiyal@intel.com
(cherry picked from commit 550b703fdbb2a2022faa75b4b11ab135241afbd9)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_quirks.c b/drivers/gpu/drm/i915/display/intel_quirks.c
index 33245f44c0d5..7d7db774d8c7 100644
--- a/drivers/gpu/drm/i915/display/intel_quirks.c
+++ b/drivers/gpu/drm/i915/display/intel_quirks.c
@@ -257,6 +257,9 @@ static struct intel_quirk intel_quirks[] = {
 	/* Dell XPS 13 7390 2-in-1 */
 	{ 0x8a52, 0x1028, 0x08b0, quirk_edp_limit_rate_hbr2 },
 
+	/* HP Pavilion Plus Laptop 14-ew1xxx */
+	{ 0x7d55, 0x103c, 0x8c31, quirk_edp_limit_rate_hbr2 },
+
 	/* Xiaomi Book Pro 14 2026 */
 	{ 0xb081, 0x1d72, 0x2424, quirk_disable_psr2 },
 };


^ permalink raw reply related	[flat|nested] 5+ messages in thread

* [PATCH 6.18.y 1/4] drm/i915/psr: Disable Panel Replay on Dell XPS 14 DA14260 as a quirk
  2026-09-29  8:15 FAILED: patch "[PATCH] drm/i915/quirks: Limit eDP rate to HBR2 on HP Pavilion Plus" failed to apply to 6.18-stable tree gregkh
@ 2026-09-29 14:12 ` Sasha Levin
  2026-09-29 14:12   ` [PATCH 6.18.y 2/4] drm/i915/psr: Fixes for Dell XPS DA14260 quirk Sasha Levin
                     ` (2 more replies)
  0 siblings, 3 replies; 5+ messages in thread
From: Sasha Levin @ 2026-09-29 14:12 UTC (permalink / raw)
  To: stable; +Cc: Jouni Högander, Mika Kahola, Sasha Levin

From: Jouni Högander <jouni.hogander@intel.com>

[ Upstream commit 45c77d4bf8d4d15453d709b9b828e498898e0751 ]

Add new quirk (QUIRK_DISABLE_PANEL_REPLAY) for disabling Panel Replay as
quirk for problematic setups. Apply this newly added quirk on Dell XPS 14
DA14260 if specific panel model is installed.

We are observing problems with Dell XPS 14 DA14260. This device has certain
LGD panel model which seems to be problematic. We have seen other LGD panel
model with same OUI is working fine. Due to this we can't apply the quirk
only based on panel OUI. There are also cases where same device model has
differing panel model. We don't want to disable Panel Replay on such
devices. Best we can do is to apply the quirk based on both device model
and panel model.

Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/7521
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Link: https://patch.msgid.link/20260317062402.1888624-1-jouni.hogander@intel.com
Stable-dep-of: 5271d81f99dd ("drm/i915/quirks: Limit eDP rate to HBR2 on HP Pavilion Plus 14-ew1")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/i915/display/intel_psr.c    |  7 +++++++
 drivers/gpu/drm/i915/display/intel_quirks.c | 17 ++++++++++++++++-
 drivers/gpu/drm/i915/display/intel_quirks.h |  1 +
 3 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 1eeae3243bd5d..8c95e6dc8e4f4 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -49,6 +49,7 @@
 #include "intel_hdmi.h"
 #include "intel_psr.h"
 #include "intel_psr_regs.h"
+#include "intel_quirks.h"
 #include "intel_snps_phy.h"
 #include "intel_step.h"
 #include "intel_vblank.h"
@@ -592,6 +593,12 @@ static void _panel_replay_init_dpcd(struct intel_dp *intel_dp)
 	if (intel_dp->mst_detect == DRM_DP_MST)
 		return;
 
+	if (intel_has_dpcd_quirk(intel_dp, QUIRK_DISABLE_PANEL_REPLAY)) {
+		drm_dbg_kms(display->drm,
+			    "Panel Replay support not currently available for this setup\n");
+		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)
diff --git a/drivers/gpu/drm/i915/display/intel_quirks.c b/drivers/gpu/drm/i915/display/intel_quirks.c
index 1abbdd426e587..8f1bf8f418ec7 100644
--- a/drivers/gpu/drm/i915/display/intel_quirks.c
+++ b/drivers/gpu/drm/i915/display/intel_quirks.c
@@ -86,6 +86,14 @@ static void quirk_edp_limit_rate_hbr2(struct intel_display *display)
 	drm_info(display->drm, "Applying eDP Limit rate to HBR2 quirk\n");
 }
 
+static void quirk_disable_panel_replay(struct intel_dp *intel_dp)
+{
+	struct intel_display *display = to_intel_display(intel_dp);
+
+	intel_set_dpcd_quirk(intel_dp, QUIRK_DISABLE_PANEL_REPLAY);
+	drm_info(display->drm, "Applying disable Panel Replay quirk\n");
+}
+
 struct intel_quirk {
 	int device;
 	int subsystem_vendor;
@@ -251,7 +259,14 @@ static const struct intel_dpcd_quirk intel_dpcd_quirks[] = {
 		.sink_oui = SINK_OUI(0x38, 0xec, 0x11),
 		.hook = quirk_fw_sync_len,
 	},
-
+	/* Dell XPS 14 DA14260 */
+	{
+		.device = 0xb080,
+		.subsystem_vendor = 0x1028,
+		.subsystem_device = 0x0db9,
+		.sink_oui = SINK_OUI(0x00, 0x22, 0xb9),
+		.hook = quirk_disable_panel_replay,
+	},
 };
 
 void intel_init_quirks(struct intel_display *display)
diff --git a/drivers/gpu/drm/i915/display/intel_quirks.h b/drivers/gpu/drm/i915/display/intel_quirks.h
index 06da0e286c67c..77e490caed0d8 100644
--- a/drivers/gpu/drm/i915/display/intel_quirks.h
+++ b/drivers/gpu/drm/i915/display/intel_quirks.h
@@ -21,6 +21,7 @@ enum intel_quirk_id {
 	QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK,
 	QUIRK_FW_SYNC_LEN,
 	QUIRK_EDP_LIMIT_RATE_HBR2,
+	QUIRK_DISABLE_PANEL_REPLAY,
 };
 
 void intel_init_quirks(struct intel_display *display);
-- 
2.53.0


^ permalink raw reply related	[flat|nested] 5+ messages in thread

* [PATCH 6.18.y 2/4] drm/i915/psr: Fixes for Dell XPS DA14260 quirk
  2026-09-29 14:12 ` [PATCH 6.18.y 1/4] drm/i915/psr: Disable Panel Replay on Dell XPS 14 DA14260 as a quirk Sasha Levin
@ 2026-09-29 14:12   ` Sasha Levin
  2026-09-29 14:12   ` [PATCH 6.18.y 3/4] drm/i915/psr: Disable PSR2 on Xiaomi Book Pro 14 2026 as a quirk Sasha Levin
  2026-09-29 14:12   ` [PATCH 6.18.y 4/4] drm/i915/quirks: Limit eDP rate to HBR2 on HP Pavilion Plus 14-ew1 Sasha Levin
  2 siblings, 0 replies; 5+ messages in thread
From: Sasha Levin @ 2026-09-29 14:12 UTC (permalink / raw)
  To: stable; +Cc: Jouni Högander, Mika Kahola, Sasha Levin

From: Jouni Högander <jouni.hogander@intel.com>

[ Upstream commit 1de647abdfda9dc307503d0a85152161850ba52c ]

Dell seems to be changing device ID even within same device model. Due to
this we need to ignore device ID when applying quirk for Dell XPS 14
DA14260. Do this by adding DEVICE_ID_ANY and assign it to Dell XPS 14
DA14260 quirk. Also apply the quirk only for eDP Panel Replay.

Fixes: 45c77d4bf8d4 ("drm/i915/psr: Disable Panel Replay on Dell XPS 14 DA14260 as a quirk")
Cc: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Link: https://patch.msgid.link/20260320080403.1396926-1-jouni.hogander@intel.com
Stable-dep-of: 5271d81f99dd ("drm/i915/quirks: Limit eDP rate to HBR2 on HP Pavilion Plus 14-ew1")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/i915/display/intel_psr.c    |  3 ++-
 drivers/gpu/drm/i915/display/intel_quirks.c | 16 ++++++++++------
 drivers/gpu/drm/i915/display/intel_quirks.h |  2 +-
 3 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 8c95e6dc8e4f4..3088230fef8b6 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -593,7 +593,8 @@ static void _panel_replay_init_dpcd(struct intel_dp *intel_dp)
 	if (intel_dp->mst_detect == DRM_DP_MST)
 		return;
 
-	if (intel_has_dpcd_quirk(intel_dp, QUIRK_DISABLE_PANEL_REPLAY)) {
+	if (intel_dp_is_edp(intel_dp) &&
+	    intel_has_dpcd_quirk(intel_dp, QUIRK_DISABLE_EDP_PANEL_REPLAY)) {
 		drm_dbg_kms(display->drm,
 			    "Panel Replay support not currently available for this setup\n");
 		return;
diff --git a/drivers/gpu/drm/i915/display/intel_quirks.c b/drivers/gpu/drm/i915/display/intel_quirks.c
index 8f1bf8f418ec7..883f297d4b837 100644
--- a/drivers/gpu/drm/i915/display/intel_quirks.c
+++ b/drivers/gpu/drm/i915/display/intel_quirks.c
@@ -86,11 +86,11 @@ static void quirk_edp_limit_rate_hbr2(struct intel_display *display)
 	drm_info(display->drm, "Applying eDP Limit rate to HBR2 quirk\n");
 }
 
-static void quirk_disable_panel_replay(struct intel_dp *intel_dp)
+static void quirk_disable_edp_panel_replay(struct intel_dp *intel_dp)
 {
 	struct intel_display *display = to_intel_display(intel_dp);
 
-	intel_set_dpcd_quirk(intel_dp, QUIRK_DISABLE_PANEL_REPLAY);
+	intel_set_dpcd_quirk(intel_dp, QUIRK_DISABLE_EDP_PANEL_REPLAY);
 	drm_info(display->drm, "Applying disable Panel Replay quirk\n");
 }
 
@@ -116,6 +116,8 @@ struct intel_dpcd_quirk {
 
 #define SINK_DEVICE_ID_ANY	SINK_DEVICE_ID(0, 0, 0, 0, 0, 0)
 
+#define DEVICE_ID_ANY		0
+
 /* For systems that don't have a meaningful PCI subdevice/subvendor ID */
 struct intel_dmi_quirk {
 	void (*hook)(struct intel_display *display);
@@ -261,11 +263,11 @@ static const struct intel_dpcd_quirk intel_dpcd_quirks[] = {
 	},
 	/* Dell XPS 14 DA14260 */
 	{
-		.device = 0xb080,
+		.device = DEVICE_ID_ANY,
 		.subsystem_vendor = 0x1028,
 		.subsystem_device = 0x0db9,
 		.sink_oui = SINK_OUI(0x00, 0x22, 0xb9),
-		.hook = quirk_disable_panel_replay,
+		.hook = quirk_disable_edp_panel_replay,
 	},
 };
 
@@ -277,7 +279,8 @@ void intel_init_quirks(struct intel_display *display)
 	for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
 		struct intel_quirk *q = &intel_quirks[i];
 
-		if (d->device == q->device &&
+		if ((d->device == q->device ||
+		     q->device == DEVICE_ID_ANY) &&
 		    (d->subsystem_vendor == q->subsystem_vendor ||
 		     q->subsystem_vendor == PCI_ANY_ID) &&
 		    (d->subsystem_device == q->subsystem_device ||
@@ -300,7 +303,8 @@ void intel_init_dpcd_quirks(struct intel_dp *intel_dp,
 	for (i = 0; i < ARRAY_SIZE(intel_dpcd_quirks); i++) {
 		const struct intel_dpcd_quirk *q = &intel_dpcd_quirks[i];
 
-		if (d->device == q->device &&
+		if ((d->device == q->device ||
+		     q->device == DEVICE_ID_ANY) &&
 		    (d->subsystem_vendor == q->subsystem_vendor ||
 		     q->subsystem_vendor == PCI_ANY_ID) &&
 		    (d->subsystem_device == q->subsystem_device ||
diff --git a/drivers/gpu/drm/i915/display/intel_quirks.h b/drivers/gpu/drm/i915/display/intel_quirks.h
index 77e490caed0d8..83214eb94b0c4 100644
--- a/drivers/gpu/drm/i915/display/intel_quirks.h
+++ b/drivers/gpu/drm/i915/display/intel_quirks.h
@@ -21,7 +21,7 @@ enum intel_quirk_id {
 	QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK,
 	QUIRK_FW_SYNC_LEN,
 	QUIRK_EDP_LIMIT_RATE_HBR2,
-	QUIRK_DISABLE_PANEL_REPLAY,
+	QUIRK_DISABLE_EDP_PANEL_REPLAY,
 };
 
 void intel_init_quirks(struct intel_display *display);
-- 
2.53.0


^ permalink raw reply related	[flat|nested] 5+ messages in thread

* [PATCH 6.18.y 3/4] drm/i915/psr: Disable PSR2 on Xiaomi Book Pro 14 2026 as a quirk
  2026-09-29 14:12 ` [PATCH 6.18.y 1/4] drm/i915/psr: Disable Panel Replay on Dell XPS 14 DA14260 as a quirk Sasha Levin
  2026-09-29 14:12   ` [PATCH 6.18.y 2/4] drm/i915/psr: Fixes for Dell XPS DA14260 quirk Sasha Levin
@ 2026-09-29 14:12   ` Sasha Levin
  2026-09-29 14:12   ` [PATCH 6.18.y 4/4] drm/i915/quirks: Limit eDP rate to HBR2 on HP Pavilion Plus 14-ew1 Sasha Levin
  2 siblings, 0 replies; 5+ messages in thread
From: Sasha Levin @ 2026-09-29 14:12 UTC (permalink / raw)
  To: stable; +Cc: Jouni Högander, Jani Nikula, Mika Kahola, Sasha Levin

From: Jouni Högander <jouni.hogander@intel.com>

[ Upstream commit 5e79af5db00b2a5f4667aaf16cfe4ecb7759383b ]

Add new quirk (QUIRK_DISABLE_PSR2) for disabling PSR2 as a quirk for
problematic setups. Apply this newly added quirk on Xiaomi Book Pro 14
2026.

v2: logging adjusted

Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/7677
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Link: https://patch.msgid.link/20260417102350.28328-1-jouni.hogander@intel.com
Stable-dep-of: 5271d81f99dd ("drm/i915/quirks: Limit eDP rate to HBR2 on HP Pavilion Plus 14-ew1")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/i915/display/intel_psr.c    | 3 +++
 drivers/gpu/drm/i915/display/intel_quirks.c | 9 +++++++++
 drivers/gpu/drm/i915/display/intel_quirks.h | 1 +
 3 files changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 3088230fef8b6..b6c5dbe259648 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -668,6 +668,9 @@ static void _psr_init_dpcd(struct intel_dp *intel_dp)
 	intel_dp->psr.sink_sync_latency =
 		intel_dp_get_sink_sync_latency(intel_dp);
 
+	if (intel_has_quirk(display, QUIRK_DISABLE_PSR2))
+		return;
+
 	if (DISPLAY_VER(display) >= 9 &&
 	    intel_dp->psr_dpcd[0] >= DP_PSR2_WITH_Y_COORD_IS_SUPPORTED) {
 		bool y_req = intel_dp->psr_dpcd[1] &
diff --git a/drivers/gpu/drm/i915/display/intel_quirks.c b/drivers/gpu/drm/i915/display/intel_quirks.c
index 883f297d4b837..d1c428eeb6083 100644
--- a/drivers/gpu/drm/i915/display/intel_quirks.c
+++ b/drivers/gpu/drm/i915/display/intel_quirks.c
@@ -94,6 +94,12 @@ static void quirk_disable_edp_panel_replay(struct intel_dp *intel_dp)
 	drm_info(display->drm, "Applying disable Panel Replay quirk\n");
 }
 
+static void quirk_disable_psr2(struct intel_display *display)
+{
+	intel_set_quirk(display, QUIRK_DISABLE_PSR2);
+	drm_info(display->drm, "PSR2 support not currently available for this setup, applying disable PSR2 quirk\n");
+}
+
 struct intel_quirk {
 	int device;
 	int subsystem_vendor;
@@ -250,6 +256,9 @@ static struct intel_quirk intel_quirks[] = {
 
 	/* Dell XPS 13 7390 2-in-1 */
 	{ 0x8a52, 0x1028, 0x08b0, quirk_edp_limit_rate_hbr2 },
+
+	/* Xiaomi Book Pro 14 2026 */
+	{ 0xb081, 0x1d72, 0x2424, quirk_disable_psr2 },
 };
 
 static const struct intel_dpcd_quirk intel_dpcd_quirks[] = {
diff --git a/drivers/gpu/drm/i915/display/intel_quirks.h b/drivers/gpu/drm/i915/display/intel_quirks.h
index 83214eb94b0c4..970a4fe52fafc 100644
--- a/drivers/gpu/drm/i915/display/intel_quirks.h
+++ b/drivers/gpu/drm/i915/display/intel_quirks.h
@@ -22,6 +22,7 @@ enum intel_quirk_id {
 	QUIRK_FW_SYNC_LEN,
 	QUIRK_EDP_LIMIT_RATE_HBR2,
 	QUIRK_DISABLE_EDP_PANEL_REPLAY,
+	QUIRK_DISABLE_PSR2,
 };
 
 void intel_init_quirks(struct intel_display *display);
-- 
2.53.0


^ permalink raw reply related	[flat|nested] 5+ messages in thread

* [PATCH 6.18.y 4/4] drm/i915/quirks: Limit eDP rate to HBR2 on HP Pavilion Plus 14-ew1
  2026-09-29 14:12 ` [PATCH 6.18.y 1/4] drm/i915/psr: Disable Panel Replay on Dell XPS 14 DA14260 as a quirk Sasha Levin
  2026-09-29 14:12   ` [PATCH 6.18.y 2/4] drm/i915/psr: Fixes for Dell XPS DA14260 quirk Sasha Levin
  2026-09-29 14:12   ` [PATCH 6.18.y 3/4] drm/i915/psr: Disable PSR2 on Xiaomi Book Pro 14 2026 as a quirk Sasha Levin
@ 2026-09-29 14:12   ` Sasha Levin
  2 siblings, 0 replies; 5+ messages in thread
From: Sasha Levin @ 2026-09-29 14:12 UTC (permalink / raw)
  To: stable; +Cc: Ankit Nautiyal, Annoy Cc, Nemesa Garg, Jani Nikula, Sasha Levin

From: Ankit Nautiyal <ankit.k.nautiyal@intel.com>

[ Upstream commit 5271d81f99dd01d983d439930eb056952485e15e ]

The eDP panel on the HP Pavilion Plus Laptop 14-ew1xxx advertises HBR3
while leaving the TPS4 support bit clear. The output however flickers, once
link is trained with HBR3.

Until commit 8c9006283e4b ("Revert "drm/i915/dp: Reject HBR3 when sink
doesn't support TPS4"") such sinks were capped at HBR2 by the TPS4 check
which incidentally kept this panel stable. That check was reverted because
other panels legitimately need HBR3 without advertising TPS4, and the
per-machine QUIRK_EDP_LIMIT_RATE_HBR2 was introduced to handle the affected
machines instead.

Add the machine to the list of devices that need the
QUIRK_EDP_LIMIT_RATE_HBR2.

Fixes: 8c9006283e4b ("Revert "drm/i915/dp: Reject HBR3 when sink doesn't support TPS4"")
Reported-by: Annoy Cc <annoycc@gmail.com>
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/work_items/16743
Cc: <stable@vger.kernel.org> # v6.18+
Tested-by: Annoy Cc <annoycc@gmail.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Nemesa Garg <nemesa.garg@intel.com>
Link: https://patch.msgid.link/20260907034555.2753846-1-ankit.k.nautiyal@intel.com
(cherry picked from commit 550b703fdbb2a2022faa75b4b11ab135241afbd9)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/i915/display/intel_quirks.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_quirks.c b/drivers/gpu/drm/i915/display/intel_quirks.c
index d1c428eeb6083..988d0de8645cf 100644
--- a/drivers/gpu/drm/i915/display/intel_quirks.c
+++ b/drivers/gpu/drm/i915/display/intel_quirks.c
@@ -257,6 +257,9 @@ static struct intel_quirk intel_quirks[] = {
 	/* Dell XPS 13 7390 2-in-1 */
 	{ 0x8a52, 0x1028, 0x08b0, quirk_edp_limit_rate_hbr2 },
 
+	/* HP Pavilion Plus Laptop 14-ew1xxx */
+	{ 0x7d55, 0x103c, 0x8c31, quirk_edp_limit_rate_hbr2 },
+
 	/* Xiaomi Book Pro 14 2026 */
 	{ 0xb081, 0x1d72, 0x2424, quirk_disable_psr2 },
 };
-- 
2.53.0


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Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2026-09-29  8:15 FAILED: patch "[PATCH] drm/i915/quirks: Limit eDP rate to HBR2 on HP Pavilion Plus" failed to apply to 6.18-stable tree gregkh
2026-09-29 14:12 ` [PATCH 6.18.y 1/4] drm/i915/psr: Disable Panel Replay on Dell XPS 14 DA14260 as a quirk Sasha Levin
2026-09-29 14:12   ` [PATCH 6.18.y 2/4] drm/i915/psr: Fixes for Dell XPS DA14260 quirk Sasha Levin
2026-09-29 14:12   ` [PATCH 6.18.y 3/4] drm/i915/psr: Disable PSR2 on Xiaomi Book Pro 14 2026 as a quirk Sasha Levin
2026-09-29 14:12   ` [PATCH 6.18.y 4/4] drm/i915/quirks: Limit eDP rate to HBR2 on HP Pavilion Plus 14-ew1 Sasha Levin

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