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From:   Konrad Dybcio <konrad.dybcio@linaro.org>
Date:   Wed, 31 May 2023 15:22:36 +0200
Subject: [PATCH 2/8] arm64: dts: qcom: sm6350: Add PSCI idle states
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In-Reply-To: <20230531-topic-rsc-v1-0-b4a985f57b8b@linaro.org>
To:     Andy Gross <agross@kernel.org>,
        Bjorn Andersson <andersson@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Melody Olvera <quic_molvera@quicinc.com>,
        Vinod Koul <vkoul@kernel.org>,
        Richard Acayan <mailingradian@gmail.com>,
        Lina Iyer <ilina@codeaurora.org>,
        Douglas Anderson <dianders@chromium.org>,
        Neil Armstrong <neil.armstrong@linaro.org>,
        Abel Vesa <abel.vesa@linaro.org>,
        Sai Prakash Ranjan <quic_saipraka@quicinc.com>
Cc:     Marijn Suijten <marijn.suijten@somainline.org>,
        Bartosz Golaszewski <bartosz.golaszewski@linaro.org>,
        Luca Weiss <luca.weiss@fairphone.com>,
        linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, Andy Gross <andy.gross@linaro.org>,
        Konrad Dybcio <konrad.dybcio@somainline.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>
Precedence: bulk

Add the PSCI idle states so that the CPU (among other things) can
reach lower power states.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 arch/arm64/boot/dts/qcom/sm6350.dtsi | 141 +++++++++++++++++++++++++++++++++++
 1 file changed, 141 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm6350.dtsi b/arch/arm64/boot/dts/qcom/sm6350.dtsi
index 46c29a190f1d..9311bb6bddab 100644
--- a/arch/arm64/boot/dts/qcom/sm6350.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm6350.dtsi
@@ -56,6 +56,8 @@ CPU0: cpu@0 {
 			interconnects = <&gem_noc MASTER_AMPSS_M0 QCOM_ICC_TAG_ACTIVE_ONLY
 					 &clk_virt SLAVE_EBI_CH0 QCOM_ICC_TAG_ACTIVE_ONLY>,
 					<&osm_l3 MASTER_OSM_L3_APPS &osm_l3 SLAVE_OSM_L3>;
+			power-domains = <&CPU_PD0>;
+			power-domain-names = "psci";
 			#cooling-cells = <2>;
 			L2_0: l2-cache {
 				compatible = "cache";
@@ -84,6 +86,8 @@ CPU1: cpu@100 {
 			interconnects = <&gem_noc MASTER_AMPSS_M0 QCOM_ICC_TAG_ACTIVE_ONLY
 					 &clk_virt SLAVE_EBI_CH0 QCOM_ICC_TAG_ACTIVE_ONLY>,
 					<&osm_l3 MASTER_OSM_L3_APPS &osm_l3 SLAVE_OSM_L3>;
+			power-domains = <&CPU_PD1>;
+			power-domain-names = "psci";
 			#cooling-cells = <2>;
 			L2_100: l2-cache {
 				compatible = "cache";
@@ -107,6 +111,8 @@ CPU2: cpu@200 {
 			interconnects = <&gem_noc MASTER_AMPSS_M0 QCOM_ICC_TAG_ACTIVE_ONLY
 					 &clk_virt SLAVE_EBI_CH0 QCOM_ICC_TAG_ACTIVE_ONLY>,
 					<&osm_l3 MASTER_OSM_L3_APPS &osm_l3 SLAVE_OSM_L3>;
+			power-domains = <&CPU_PD2>;
+			power-domain-names = "psci";
 			#cooling-cells = <2>;
 			L2_200: l2-cache {
 				compatible = "cache";
@@ -130,6 +136,8 @@ CPU3: cpu@300 {
 			interconnects = <&gem_noc MASTER_AMPSS_M0 QCOM_ICC_TAG_ACTIVE_ONLY
 					 &clk_virt SLAVE_EBI_CH0 QCOM_ICC_TAG_ACTIVE_ONLY>,
 					<&osm_l3 MASTER_OSM_L3_APPS &osm_l3 SLAVE_OSM_L3>;
+			power-domains = <&CPU_PD3>;
+			power-domain-names = "psci";
 			#cooling-cells = <2>;
 			L2_300: l2-cache {
 				compatible = "cache";
@@ -153,6 +161,8 @@ CPU4: cpu@400 {
 			interconnects = <&gem_noc MASTER_AMPSS_M0 QCOM_ICC_TAG_ACTIVE_ONLY
 					 &clk_virt SLAVE_EBI_CH0 QCOM_ICC_TAG_ACTIVE_ONLY>,
 					<&osm_l3 MASTER_OSM_L3_APPS &osm_l3 SLAVE_OSM_L3>;
+			power-domains = <&CPU_PD4>;
+			power-domain-names = "psci";
 			#cooling-cells = <2>;
 			L2_400: l2-cache {
 				compatible = "cache";
@@ -176,6 +186,8 @@ CPU5: cpu@500 {
 			interconnects = <&gem_noc MASTER_AMPSS_M0 QCOM_ICC_TAG_ACTIVE_ONLY
 					 &clk_virt SLAVE_EBI_CH0 QCOM_ICC_TAG_ACTIVE_ONLY>,
 					<&osm_l3 MASTER_OSM_L3_APPS &osm_l3 SLAVE_OSM_L3>;
+			power-domains = <&CPU_PD5>;
+			power-domain-names = "psci";
 			#cooling-cells = <2>;
 			L2_500: l2-cache {
 				compatible = "cache";
@@ -199,6 +211,8 @@ CPU6: cpu@600 {
 			interconnects = <&gem_noc MASTER_AMPSS_M0 QCOM_ICC_TAG_ACTIVE_ONLY
 					 &clk_virt SLAVE_EBI_CH0 QCOM_ICC_TAG_ACTIVE_ONLY>,
 					<&osm_l3 MASTER_OSM_L3_APPS &osm_l3 SLAVE_OSM_L3>;
+			power-domains = <&CPU_PD6>;
+			power-domain-names = "psci";
 			#cooling-cells = <2>;
 			L2_600: l2-cache {
 				compatible = "cache";
@@ -222,6 +236,8 @@ CPU7: cpu@700 {
 			interconnects = <&gem_noc MASTER_AMPSS_M0 QCOM_ICC_TAG_ACTIVE_ONLY
 					 &clk_virt SLAVE_EBI_CH0 QCOM_ICC_TAG_ACTIVE_ONLY>,
 					<&osm_l3 MASTER_OSM_L3_APPS &osm_l3 SLAVE_OSM_L3>;
+			power-domains = <&CPU_PD7>;
+			power-domain-names = "psci";
 			#cooling-cells = <2>;
 			L2_700: l2-cache {
 				compatible = "cache";
@@ -266,6 +282,76 @@ core7 {
 				};
 			};
 		};
+
+		domain-idle-states {
+			CLUSTER_SLEEP_PC: cluster-sleep-0 {
+				compatible = "domain-idle-state";
+				arm,psci-suspend-param = <0x41000044>;
+				entry-latency-us = <2752>;
+				exit-latency-us = <3048>;
+				min-residency-us = <6118>;
+			};
+
+			CLUSTER_SLEEP_CX_RET: cluster-sleep-1 {
+				compatible = "domain-idle-state";
+				arm,psci-suspend-param = <0x41001244>;
+				entry-latency-us = <3638>;
+				exit-latency-us = <4562>;
+				min-residency-us = <8467>;
+			};
+
+			CLUSTER_AOSS_SLEEP: cluster-sleep-2 {
+				compatible = "domain-idle-state";
+				arm,psci-suspend-param = <0x4100b244>;
+				entry-latency-us = <3263>;
+				exit-latency-us = <6562>;
+				min-residency-us = <9987>;
+			};
+		};
+
+		cpu_idle_states: idle-states {
+			entry-method = "psci";
+
+			LITTLE_CPU_SLEEP_0: cpu-sleep-0-0 {
+				compatible = "arm,idle-state";
+				idle-state-name = "little-power-collapse";
+				arm,psci-suspend-param = <0x40000003>;
+				entry-latency-us = <549>;
+				exit-latency-us = <901>;
+				min-residency-us = <1774>;
+				local-timer-stop;
+			};
+
+			LITTLE_CPU_SLEEP_1: cpu-sleep-0-1 {
+				compatible = "arm,idle-state";
+				idle-state-name = "little-rail-power-collapse";
+				arm,psci-suspend-param = <0x40000004>;
+				entry-latency-us = <702>;
+				exit-latency-us = <915>;
+				min-residency-us = <4001>;
+				local-timer-stop;
+			};
+
+			BIG_CPU_SLEEP_0: cpu-sleep-1-0 {
+				compatible = "arm,idle-state";
+				idle-state-name = "big-power-collapse";
+				arm,psci-suspend-param = <0x40000003>;
+				entry-latency-us = <523>;
+				exit-latency-us = <1244>;
+				min-residency-us = <2207>;
+				local-timer-stop;
+			};
+
+			BIG_CPU_SLEEP_1: cpu-sleep-1-1 {
+				compatible = "arm,idle-state";
+				idle-state-name = "big-rail-power-collapse";
+				arm,psci-suspend-param = <0x40000004>;
+				entry-latency-us = <526>;
+				exit-latency-us = <1854>;
+				min-residency-us = <5555>;
+				local-timer-stop;
+			};
+		};
 	};
 
 	firmware {
@@ -395,6 +481,61 @@ pmu {
 	psci {
 		compatible = "arm,psci-1.0";
 		method = "smc";
+
+		CPU_PD0: power-domain-cpu0 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1>;
+		};
+
+		CPU_PD1: power-domain-cpu1 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1>;
+		};
+
+		CPU_PD2: power-domain-cpu2 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1>;
+		};
+
+		CPU_PD3: power-domain-cpu3 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1>;
+		};
+
+		CPU_PD4: power-domain-cpu4 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1>;
+		};
+
+		CPU_PD5: power-domain-cpu5 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1>;
+		};
+
+		CPU_PD6: power-domain-cpu6 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&BIG_CPU_SLEEP_0 &BIG_CPU_SLEEP_1>;
+		};
+
+		CPU_PD7: power-domain-cpu7 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&BIG_CPU_SLEEP_0 &BIG_CPU_SLEEP_1>;
+		};
+
+		CLUSTER_PD: power-domain-cpu-cluster0 {
+			#power-domain-cells = <0>;
+			domain-idle-states = <&CLUSTER_SLEEP_PC
+					      &CLUSTER_SLEEP_CX_RET
+					      &CLUSTER_AOSS_SLEEP>;
+		};
 	};
 
 	reserved_memory: reserved-memory {

-- 
2.40.1