[PATCH 7.1 012/271] arm64: dts: qcom: sdm850-lenovo-yoga-c630: lower PSCI cluster idle

Greg Kroah-Hartman <[email protected]>
Newsgroups dev.linux.lists.patches,org.kernel.vger.stable
Message-ID <[email protected]>
7.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dmitry Baryshkov <[email protected]>

[ Upstream commit 07db10de262f4150e24fd631a7a6c428f7bf80c9 ]

With the default PSCI suspend value for cluster idle state Lenovo Yoga
C630 isn't stable enough. For example it might reset if display device
isn't probed early enough. Drop the bit 0x4000 from the PSCI suspend
value to make C630 work in stable way. The bit was found by
expertimenting with the cluster idle PSCI value. Most likely it results
in the less deep sleep and more energy beign spent in the suspend state,
but it's better than the non-stable system behaviour.

Fixes: a1ade6cac5a2 ("arm64: dts: qcom: sdm845: Switch PSCI cpu idle states from PC to OSI")
Signed-off-by: Dmitry Baryshkov <[email protected]>
Reviewed-by: Abel Vesa <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
 arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
index e41200839dbec..8cdaef5360d11 100644
--- a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
+++ b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
@@ -347,6 +347,10 @@ &cdsp_pas {
 	status = "okay";
 };
 
+&cluster_sleep_0 {
+	arm,psci-suspend-param = <0x41008244>;
+};
+
 &gcc {
 	protected-clocks = <GCC_QSPI_CORE_CLK>,
 			   <GCC_QSPI_CORE_CLK_SRC>,
-- 
2.53.0
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