This is a note to let you know that I've just added the patch titled
drm/i915/mtl: Support HBR3 rate with C10 phy and eDP in MTL
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-mtl-support-hbr3-rate-with-c10-phy-and-edp-in-mtl.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ce4941c2d6459664761c9854701015d8e99414fb Mon Sep 17 00:00:00 2001
From: Chaitanya Kumar Borah <chaitanya.kumar.borah@xxxxxxxxx>
Date: Wed, 18 Oct 2023 17:06:22 +0530
Subject: drm/i915/mtl: Support HBR3 rate with C10 phy and eDP in MTL
From: Chaitanya Kumar Borah <chaitanya.kumar.borah@xxxxxxxxx>
commit ce4941c2d6459664761c9854701015d8e99414fb upstream.
eDP specification supports HBR3 link rate since v1.4a. Moreover,
C10 phy can support HBR3 link rate for both DP and eDP. Therefore,
do not clamp the supported rates for eDP at 6.75Gbps.
Cc: <stable@xxxxxxxxxxxxxxx>
BSpec: 70073 74224
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@xxxxxxxxx>
Reviewed-by: Mika Kahola <mika.kahola@xxxxxxxxx>
Signed-off-by: Mika Kahola <mika.kahola@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20231018113622.2761997-1-chaitanya.kumar.borah@xxxxxxxxx
(cherry picked from commit a3431650f30a94b179d419ef87c21213655c28cd)
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_dp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -430,7 +430,7 @@ static int mtl_max_source_rate(struct in
enum phy phy = intel_port_to_phy(i915, dig_port->base.port);
if (intel_is_c10phy(i915, phy))
- return intel_dp_is_edp(intel_dp) ? 675000 : 810000;
+ return 810000;
return 2000000;
}
Patches currently in stable-queue which might be from chaitanya.kumar.borah@xxxxxxxxx are
queue-6.6/drm-i915-mtl-support-hbr3-rate-with-c10-phy-and-edp-in-mtl.patch
