This is a note to let you know that I've just added the patch titled
arm64: dts: qcom: msm8939: Drop "qcom,idle-state-spc" compatible
to the 6.5-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-msm8939-drop-qcom-idle-state-spc-comp.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 27f6e6adb10bc294515107df4ca75ca4cc59637f
Author: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Date: Tue Jun 27 18:24:18 2023 +0200
arm64: dts: qcom: msm8939: Drop "qcom,idle-state-spc" compatible
[ Upstream commit 982f810fc196002808b6d4230ba8f431c993d264 ]
As of today, the only cool and legal way to get ARM64 SMP going is
via PSCI (or spin tables). Sadly, not all chip and device vendors were
considerate of this in the early days of arm64. Qualcomm, for example
reused their tried-and-true spin-up method from MSM8974 and their Krait/
arm32 Cortex designs.
MSM8916 supports SMP with its arm32 dt overlay, as probably could 8939.
But the arm64 DT should not define non-PSCI SMP or CPUidle stuff.
Drop the qcom,idle-state-spc compatible (associated with Qualcomm-specific
CPUIdle) to make the dt checker happy:
apq8039-t2.dtb: idle-states: cpu-sleep-0:compatible:
['qcom,idle-state-spc', 'arm,idle-state'] is too long
Fixes: 61550c6c156c ("arm64: dts: qcom: Add msm8939 SoC")
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Reviewed-by: Benjamin Li <benl@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230627-topic-more_bindings-v1-2-6b4b6cd081e5@xxxxxxxxxx
Signed-off-by: Bjorn Andersson <andersson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/arm64/boot/dts/qcom/msm8939.dtsi b/arch/arm64/boot/dts/qcom/msm8939.dtsi
index 895cafc11480b..8a856bd8e8e92 100644
--- a/arch/arm64/boot/dts/qcom/msm8939.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8939.dtsi
@@ -155,7 +155,7 @@ CPU7: cpu@3 {
idle-states {
CPU_SLEEP_0: cpu-sleep-0 {
- compatible ="qcom,idle-state-spc", "arm,idle-state";
+ compatible = "arm,idle-state";
entry-latency-us = <130>;
exit-latency-us = <150>;
min-residency-us = <2000>;
