This is a note to let you know that I've just added the patch titled
dt-bindings: msm: dsi-controller-main: Fix power-domain constraint
to the 5.15-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:
dt-bindings-msm-dsi-controller-main-fix-power-domain-constraint.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a6f033938beb31f893302a93f83ec0b6460c6cac Mon Sep 17 00:00:00 2001
From: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
Date: Fri, 23 Dec 2022 02:10:09 +0000
Subject: dt-bindings: msm: dsi-controller-main: Fix power-domain constraint
From: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
commit a6f033938beb31f893302a93f83ec0b6460c6cac upstream.
power-domain is required for the sc7180 dispcc GDSC but not every qcom SoC
has a similar dependency for example the apq8064.
Most Qcom SoC's using mdss-dsi-ctrl seem to have the ability to
power-collapse the MDP without collapsing DSI.
For example the qcom vendor kernel commit for apq8084, msm8226, msm8916,
msm8974.
https://review.carbonrom.org/plugins/gitiles/CarbonROM/android_kernel_oneplus_msm8994/+/7b5c011a770daa2811778937ed646237a28a8694
"ARM: dts: msm: add mdss gdsc supply to dsi controller device
It is possible for the DSI controller to be active when MDP is
power collapsed. DSI controller needs to have it's own vote for
mdss gdsc to ensure that gdsc remains on in such cases."
This however doesn't appear to be the case for the apq8064 so we shouldn't
be marking power-domain as required in yaml checks.
Fixes: 4dbe55c97741 ("dt-bindings: msm: dsi: add yaml schemas for DSI bindings")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
Patchwork: https://patchwork.freedesktop.org/patch/515958/
Link: https://lore.kernel.org/r/20221223021025.1646636-3-bryan.odonoghue@xxxxxxxxxx
Signed-off-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml | 1 -
1 file changed, 1 deletion(-)
--- a/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml
+++ b/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml
@@ -135,7 +135,6 @@ required:
- phy-names
- assigned-clocks
- assigned-clock-parents
- - power-domains
- ports
additionalProperties: false
Patches currently in stable-queue which might be from bryan.odonoghue@xxxxxxxxxx are
queue-5.15/dt-bindings-msm-dsi-phy-28nm-add-missing-qcom-dsi-phy-regulator-ldo-mode.patch
queue-5.15/dt-bindings-msm-dsi-controller-main-fix-operating-points-v2-constraint.patch
queue-5.15/dt-bindings-msm-dsi-controller-main-fix-power-domain-constraint.patch
queue-5.15/dt-bindings-msm-dsi-controller-main-fix-description-of-core-clock.patch
