This is a note to let you know that I've just added the patch titled
arm64: dts: ti: k3-am69-sk: remove assigned-clock-parents for unused VP
to the 6.7-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:
arm64-dts-ti-k3-am69-sk-remove-assigned-clock-parent.patch
and it can be found in the queue-6.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 30d6018cf5e29a1f5c9a064a24144e01569afb58
Author: Jayesh Choudhary <j-choudhary@xxxxxx>
Date: Thu Feb 1 19:53:08 2024 +0530
arm64: dts: ti: k3-am69-sk: remove assigned-clock-parents for unused VP
[ Upstream commit cfdb4f7ffdb855c1a3d274dc7757e780dcbf2d55 ]
VP2 and VP3 are unused video ports and VP3 share the same parent
clock as VP1 causing issue with pixel clock setting for HDMI (VP1).
The current DM firmware does not support changing parent clock if it
is shared by another component. It returns 0 for the determine_rate
query before causing set_rate to set the clock at default maximum of
1.8GHz which is a lot more than the maximum frequency videoports can
support (600MHz) causing SYNC LOST issues.
So remove the parent clocks for unused VPs to avoid conflict.
Fixes: 6f8605fd7d11 ("arm64: dts: ti: k3-am69-sk: Add DP and HDMI support")
Reported-by: Nishanth Menon <nm@xxxxxx>
Signed-off-by: Jayesh Choudhary <j-choudhary@xxxxxx>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
Reviewed-by: Aradhya Bhatia <a-bhatia1@xxxxxx>
Tested-by: Enric Balletbo i Serra <eballetbo@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240201142308.4954-1-j-choudhary@xxxxxx
Signed-off-by: Vignesh Raghavendra <vigneshr@xxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/arm64/boot/dts/ti/k3-am69-sk.dts b/arch/arm64/boot/dts/ti/k3-am69-sk.dts
index 9868c7049bfb9..fafa09d6dcc64 100644
--- a/arch/arm64/boot/dts/ti/k3-am69-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am69-sk.dts
@@ -824,13 +824,9 @@ &dss {
pinctrl-names = "default";
pinctrl-0 = <&dss_vout0_pins_default>;
assigned-clocks = <&k3_clks 218 2>,
- <&k3_clks 218 5>,
- <&k3_clks 218 14>,
- <&k3_clks 218 18>;
+ <&k3_clks 218 5>;
assigned-clock-parents = <&k3_clks 218 3>,
- <&k3_clks 218 7>,
- <&k3_clks 218 16>,
- <&k3_clks 218 22>;
+ <&k3_clks 218 7>;
};
&serdes_wiz4 {
