linux-kernel - [PATCH 11/12] arm64: dts: qcom: sm8550: Separate out X3 idle state

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Message-Id: <20231218-topic-8550_fixes-v1-11-ce1272d77540@linaro.org>
Date: Mon, 18 Dec 2023 17:02:12 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Georgi Djakov <djakov@...nel.org>, Abel Vesa <abel.vesa@...aro.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Taniya Das <quic_tdas@...cinc.com>, 
 Jagadeesh Kona <quic_jkona@...cinc.com>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Rob Herring <robh+dt@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Sai Prakash Ranjan <quic_saipraka@...cinc.com>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>, 
 linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org, 
 devicetree@...r.kernel.org, Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH 11/12] arm64: dts: qcom: sm8550: Separate out X3 idle state

The X3 core has different entry/exit/residency time requirements than
the big cluster. Denote them to stop confusing the scheduler.

Fixes: ffc50b2d3828 ("arm64: dts: qcom: Add base SM8550 dtsi")
Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 arch/arm64/boot/dts/qcom/sm8550.dtsi | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi
index d6edd54f3ad3..5143a08c4867 100644
--- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
@@ -300,6 +300,16 @@ BIG_CPU_SLEEP_0: cpu-sleep-1-0 {
 				min-residency-us = <4791>;
 				local-timer-stop;
 			};
+
+			PRIME_CPU_SLEEP_0: cpu-sleep-2-0 {
+				compatible = "arm,idle-state";
+				idle-state-name = "goldplus-rail-power-collapse";
+				arm,psci-suspend-param = <0x40000004>;
+				entry-latency-us = <500>;
+				exit-latency-us = <1350>;
+				min-residency-us = <7480>;
+				local-timer-stop;
+			};
 		};
 
 		domain-idle-states {
@@ -401,7 +411,7 @@ CPU_PD6: power-domain-cpu6 {
 		CPU_PD7: power-domain-cpu7 {
 			#power-domain-cells = <0>;
 			power-domains = <&CLUSTER_PD>;
-			domain-idle-states = <&BIG_CPU_SLEEP_0>;
+			domain-idle-states = <&PRIME_CPU_SLEEP_0>;
 		};
 
 		CLUSTER_PD: power-domain-cluster {

-- 
2.43.0