Patch "arm64: dts: qcom: msm8916: Drop MSS fallback compatible" has been added to the 5.15-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    arm64: dts: qcom: msm8916: Drop MSS fallback compatible

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:
     arm64-dts-qcom-msm8916-drop-mss-fallback-compatible.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.



commit 7243ac7c1cc40b7257a0023efbce4c992a7ce900
Author: Stephan Gerhold <stephan.gerhold@xxxxxxxxxxxxxxx>
Date:   Mon Jul 18 16:03:40 2022 +0200

    arm64: dts: qcom: msm8916: Drop MSS fallback compatible
    
    [ Upstream commit ff02ac621634e82c0c34d02a79d402ae700cdfd0 ]
    
    MSM8916 was originally using the "qcom,q6v5-pil" compatible for the
    MSS remoteproc. Later it was decided to use SoC-specific compatibles
    instead, so "qcom,msm8916-mss-pil" is now the preferred compatible.
    
    Commit 60a05ed059a0 ("arm64: dts: qcom: msm8916: Add MSM8916-specific
    compatibles to SCM/MSS") updated the MSM8916 device tree to make use of
    the new compatible but still kept the old "qcom,q6v5-pil" as fallback.
    
    This is inconsistent with other SoCs and conflicts with the description
    in the binding documentation (which says that only one compatible should
    be present). Also, it has no functional advantage since older kernels
    could not handle this DT anyway (e.g. "power-domains" in the MSS node is
    only supported by kernels that also support "qcom,msm8916-mss-pil").
    
    Make this consistent with other SoCs by using only the
    "qcom,msm8916-mss-pil" compatible.
    
    Fixes: 60a05ed059a0 ("arm64: dts: qcom: msm8916: Add MSM8916-specific compatibles to SCM/MSS")
    Signed-off-by: Stephan Gerhold <stephan.gerhold@xxxxxxxxxxxxxxx>
    Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
    Signed-off-by: Bjorn Andersson <andersson@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20220718140344.1831731-2-stephan.gerhold@xxxxxxxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/arch/arm64/boot/dts/qcom/msm8916.dtsi b/arch/arm64/boot/dts/qcom/msm8916.dtsi
index 19e201f52b16..b967dbfba3b8 100644
--- a/arch/arm64/boot/dts/qcom/msm8916.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916.dtsi
@@ -1307,7 +1307,7 @@ spmi_bus: spmi@200f000 {
 		};
 
 		mpss: remoteproc@4080000 {
-			compatible = "qcom,msm8916-mss-pil", "qcom,q6v5-pil";
+			compatible = "qcom,msm8916-mss-pil";
 			reg = <0x04080000 0x100>,
 			      <0x04020000 0x040>;