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From: Navya Malempati <navya.malempati@oss.qualcomm.com>
To: Bjorn Andersson <andersson@kernel.org>,
	Konrad Dybcio <konradybcio@kernel.org>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Navya Malempati <navya.malempati@oss.qualcomm.com>
Subject: [PATCH 2/2] arm64: dts: qcom: lemans: Remove the gold_cpu_sleep idle state
Date: Fri, 22 May 2026 16:40:14 +0530	[thread overview]
Message-ID: <20260522-ml_cpuidle-v1-2-fd311cf33fb4@oss.qualcomm.com> (raw)
In-Reply-To: <20260522-ml_cpuidle-v1-0-fd311cf33fb4@oss.qualcomm.com>

Firmware supports both CPU power collapse (gold_cpu_sleep_0) and
CPU PLL/rail power collapse (gold_rail_cpu_sleep_0) idle states.
However, CPU power collapse mode is not utilized in favor of performance,
so remove it for lemans, aligning with SM8350/SM8450/SM8550/SM8650.

Rename gold_rail_cpu_sleep_0 from cpu-sleep-1 to cpu-sleep-0 since it is
now the only CPU idle state in use.

Signed-off-by: Navya Malempati <navya.malempati@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/lemans.dtsi | 36 +++++++++---------------------------
 1 file changed, 9 insertions(+), 27 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/lemans.dtsi b/arch/arm64/boot/dts/qcom/lemans.dtsi
index bc7b4f65ad5e..cfca4895e9ec 100644
--- a/arch/arm64/boot/dts/qcom/lemans.dtsi
+++ b/arch/arm64/boot/dts/qcom/lemans.dtsi
@@ -297,17 +297,7 @@ core3 {
 		idle-states {
 			entry-method = "psci";
 
-			gold_cpu_sleep_0: cpu-sleep-0 {
-				compatible = "arm,idle-state";
-				idle-state-name = "gold-power-collapse";
-				arm,psci-suspend-param = <0x40000003>;
-				entry-latency-us = <549>;
-				exit-latency-us = <901>;
-				min-residency-us = <1774>;
-				local-timer-stop;
-			};
-
-			gold_rail_cpu_sleep_0: cpu-sleep-1 {
+			gold_rail_cpu_sleep_0: cpu-sleep-0 {
 				compatible = "arm,idle-state";
 				idle-state-name = "gold-rail-power-collapse";
 				arm,psci-suspend-param = <0x40000004>;
@@ -566,57 +556,49 @@ psci {
 		cpu_pd0: power-domain-cpu0 {
 			#power-domain-cells = <0>;
 			power-domains = <&cluster_0_pd>;
-			domain-idle-states = <&gold_cpu_sleep_0>,
-					     <&gold_rail_cpu_sleep_0>;
+			domain-idle-states = <&gold_rail_cpu_sleep_0>;
 		};
 
 		cpu_pd1: power-domain-cpu1 {
 			#power-domain-cells = <0>;
 			power-domains = <&cluster_0_pd>;
-			domain-idle-states = <&gold_cpu_sleep_0>,
-					     <&gold_rail_cpu_sleep_0>;
+			domain-idle-states = <&gold_rail_cpu_sleep_0>;
 		};
 
 		cpu_pd2: power-domain-cpu2 {
 			#power-domain-cells = <0>;
 			power-domains = <&cluster_0_pd>;
-			domain-idle-states = <&gold_cpu_sleep_0>,
-					     <&gold_rail_cpu_sleep_0>;
+			domain-idle-states = <&gold_rail_cpu_sleep_0>;
 		};
 
 		cpu_pd3: power-domain-cpu3 {
 			#power-domain-cells = <0>;
 			power-domains = <&cluster_0_pd>;
-			domain-idle-states = <&gold_cpu_sleep_0>,
-					     <&gold_rail_cpu_sleep_0>;
+			domain-idle-states = <&gold_rail_cpu_sleep_0>;
 		};
 
 		cpu_pd4: power-domain-cpu4 {
 			#power-domain-cells = <0>;
 			power-domains = <&cluster_1_pd>;
-			domain-idle-states = <&gold_cpu_sleep_0>,
-					     <&gold_rail_cpu_sleep_0>;
+			domain-idle-states = <&gold_rail_cpu_sleep_0>;
 		};
 
 		cpu_pd5: power-domain-cpu5 {
 			#power-domain-cells = <0>;
 			power-domains = <&cluster_1_pd>;
-			domain-idle-states = <&gold_cpu_sleep_0>,
-					     <&gold_rail_cpu_sleep_0>;
+			domain-idle-states = <&gold_rail_cpu_sleep_0>;
 		};
 
 		cpu_pd6: power-domain-cpu6 {
 			#power-domain-cells = <0>;
 			power-domains = <&cluster_1_pd>;
-			domain-idle-states = <&gold_cpu_sleep_0>,
-					     <&gold_rail_cpu_sleep_0>;
+			domain-idle-states = <&gold_rail_cpu_sleep_0>;
 		};
 
 		cpu_pd7: power-domain-cpu7 {
 			#power-domain-cells = <0>;
 			power-domains = <&cluster_1_pd>;
-			domain-idle-states = <&gold_cpu_sleep_0>,
-					     <&gold_rail_cpu_sleep_0>;
+			domain-idle-states = <&gold_rail_cpu_sleep_0>;
 		};
 
 		cluster_0_pd: power-domain-cluster0 {

-- 
2.34.1


  parent reply	other threads:[~2026-05-22 11:10 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-22 11:10 [PATCH 0/2] Remove gold/silver_cpu_sleep idle states for lemans and monaco Navya Malempati
2026-05-22 11:10 ` [PATCH 1/2] arm64: dts: qcom: monaco: Remove the little/big_cpu_sleep_0 idle states Navya Malempati
2026-06-05 10:04   ` Maulik Shah (mkshah)
2026-06-07 19:24   ` Dmitry Baryshkov
2026-06-08  8:23     ` Navya Malempati
2026-05-22 11:10 ` Navya Malempati [this message]
2026-06-05 10:05   ` [PATCH 2/2] arm64: dts: qcom: lemans: Remove the gold_cpu_sleep idle state Maulik Shah (mkshah)
2026-07-08 14:56 ` [PATCH 0/2] Remove gold/silver_cpu_sleep idle states for lemans and monaco Bjorn Andersson

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