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From:   Maulik Shah <mkshah@codeaurora.org>
To:     swboyd@chromium.org, agross@kernel.org, david.brown@linaro.org,
        sudeep.holla@arm.com, Lorenzo.Pieralisi@arm.com
Cc:     linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        bjorn.andersson@linaro.org, evgreen@chromium.org,
        dianders@chromium.org, rnayak@codeaurora.org, ilina@codeaurora.org,
        lsrao@codeaurora.org, ulf.hansson@linaro.org, rjw@rjwysocki.net,
        Maulik Shah <mkshah@codeaurora.org>
Subject: [PATCH v3 7/7] arm64: dts: qcom: sc7180: Convert to the hierarchical CPU topology layout
Date:   Mon,  3 Feb 2020 19:05:40 +0530
Message-Id: <1580736940-6985-8-git-send-email-mkshah@codeaurora.org>
In-Reply-To: <1580736940-6985-1-git-send-email-mkshah@codeaurora.org>
References: <1580736940-6985-1-git-send-email-mkshah@codeaurora.org>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

To enable the OS to manage last-man standing activities for a CPU, while
an idle state for a group of CPUs is selected, let's convert the sc7180
platform into using the hierarchical CPU topology layout.

Signed-off-by: Maulik Shah <mkshah@codeaurora.org>
---
 arch/arm64/boot/dts/qcom/sc7180.dtsi | 105 ++++++++++++++++++++++++++---------
 1 file changed, 80 insertions(+), 25 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
index 0aa0ced..c366d10 100644
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -86,9 +86,8 @@
 			compatible = "arm,armv8";
 			reg = <0x0 0x0>;
 			enable-method = "psci";
-			cpu-idle-states = <&LITTLE_CPU_SLEEP_0
-					   &LITTLE_CPU_SLEEP_1
-					   &CLUSTER_SLEEP_0>;
+			power-domains = <&CPU_PD0>;
+			power-domain-names = "psci";
 			next-level-cache = <&L2_0>;
 			#cooling-cells = <2>;
 			qcom,freq-domain = <&cpufreq_hw 0>;
@@ -106,9 +105,8 @@
 			compatible = "arm,armv8";
 			reg = <0x0 0x100>;
 			enable-method = "psci";
-			cpu-idle-states = <&LITTLE_CPU_SLEEP_0
-					   &LITTLE_CPU_SLEEP_1
-					   &CLUSTER_SLEEP_0>;
+			power-domains = <&CPU_PD1>;
+			power-domain-names = "psci";
 			next-level-cache = <&L2_100>;
 			#cooling-cells = <2>;
 			qcom,freq-domain = <&cpufreq_hw 0>;
@@ -123,9 +121,8 @@
 			compatible = "arm,armv8";
 			reg = <0x0 0x200>;
 			enable-method = "psci";
-			cpu-idle-states = <&LITTLE_CPU_SLEEP_0
-					   &LITTLE_CPU_SLEEP_1
-					   &CLUSTER_SLEEP_0>;
+			power-domains = <&CPU_PD2>;
+			power-domain-names = "psci";
 			next-level-cache = <&L2_200>;
 			#cooling-cells = <2>;
 			qcom,freq-domain = <&cpufreq_hw 0>;
@@ -140,9 +137,8 @@
 			compatible = "arm,armv8";
 			reg = <0x0 0x300>;
 			enable-method = "psci";
-			cpu-idle-states = <&LITTLE_CPU_SLEEP_0
-					   &LITTLE_CPU_SLEEP_1
-					   &CLUSTER_SLEEP_0>;
+			power-domains = <&CPU_PD3>;
+			power-domain-names = "psci";
 			next-level-cache = <&L2_300>;
 			#cooling-cells = <2>;
 			qcom,freq-domain = <&cpufreq_hw 0>;
@@ -157,9 +153,8 @@
 			compatible = "arm,armv8";
 			reg = <0x0 0x400>;
 			enable-method = "psci";
-			cpu-idle-states = <&LITTLE_CPU_SLEEP_0
-					   &LITTLE_CPU_SLEEP_1
-					   &CLUSTER_SLEEP_0>;
+			power-domains = <&CPU_PD4>;
+			power-domain-names = "psci";
 			next-level-cache = <&L2_400>;
 			#cooling-cells = <2>;
 			qcom,freq-domain = <&cpufreq_hw 0>;
@@ -174,9 +169,8 @@
 			compatible = "arm,armv8";
 			reg = <0x0 0x500>;
 			enable-method = "psci";
-			cpu-idle-states = <&LITTLE_CPU_SLEEP_0
-					   &LITTLE_CPU_SLEEP_1
-					   &CLUSTER_SLEEP_0>;
+			power-domains = <&CPU_PD5>;
+			power-domain-names = "psci";
 			next-level-cache = <&L2_500>;
 			#cooling-cells = <2>;
 			qcom,freq-domain = <&cpufreq_hw 0>;
@@ -191,9 +185,8 @@
 			compatible = "arm,armv8";
 			reg = <0x0 0x600>;
 			enable-method = "psci";
-			cpu-idle-states = <&BIG_CPU_SLEEP_0
-					   &BIG_CPU_SLEEP_1
-					   &CLUSTER_SLEEP_0>;
+			power-domains = <&CPU_PD6>;
+			power-domain-names = "psci";
 			next-level-cache = <&L2_600>;
 			#cooling-cells = <2>;
 			qcom,freq-domain = <&cpufreq_hw 1>;
@@ -208,9 +201,8 @@
 			compatible = "arm,armv8";
 			reg = <0x0 0x700>;
 			enable-method = "psci";
-			cpu-idle-states = <&BIG_CPU_SLEEP_0
-					   &BIG_CPU_SLEEP_1
-					   &CLUSTER_SLEEP_0>;
+			power-domains = <&CPU_PD7>;
+			power-domain-names = "psci";
 			next-level-cache = <&L2_700>;
 			#cooling-cells = <2>;
 			qcom,freq-domain = <&cpufreq_hw 1>;
@@ -264,7 +256,7 @@
 			};
 
 			CLUSTER_SLEEP_0: cluster-sleep-0 {
-				compatible = "arm,idle-state";
+				compatible = "domain-idle-state";
 				idle-state-name = "cluster-power-down";
 				arm,psci-suspend-param = <0x40003444>;
 				entry-latency-us = <3263>;
@@ -375,6 +367,68 @@
 	psci {
 		compatible = "arm,psci-1.0";
 		method = "smc";
+
+		CPU_PD0: cpu-pd0 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&LITTLE_CPU_SLEEP_0>,
+					     <&LITTLE_CPU_SLEEP_1>;
+		};
+
+		CPU_PD1: cpu-pd1 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&LITTLE_CPU_SLEEP_0>,
+					     <&LITTLE_CPU_SLEEP_1>;
+		};
+
+		CPU_PD2: cpu-pd2 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&LITTLE_CPU_SLEEP_0>,
+					     <&LITTLE_CPU_SLEEP_1>;
+		};
+
+		CPU_PD3: cpu-pd3 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&LITTLE_CPU_SLEEP_0>,
+					     <&LITTLE_CPU_SLEEP_1>;
+		};
+
+		CPU_PD4: cpu-pd4 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&LITTLE_CPU_SLEEP_0>,
+					     <&LITTLE_CPU_SLEEP_1>;
+		};
+
+		CPU_PD5: cpu-pd5 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&LITTLE_CPU_SLEEP_0>,
+					     <&LITTLE_CPU_SLEEP_1>;
+		};
+
+		CPU_PD6: cpu-pd6 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&BIG_CPU_SLEEP_0>,
+					     <&BIG_CPU_SLEEP_1>;
+		};
+
+		CPU_PD7: cpu-pd7 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&BIG_CPU_SLEEP_0>,
+					     <&BIG_CPU_SLEEP_1>;
+		};
+
+		CLUSTER_PD: cluster-pd {
+			#power-domain-cells = <0>;
+			power-domains = <&apps_rsc>;
+			domain-idle-states = <&CLUSTER_SLEEP_0>;
+		};
 	};
 
 	soc: soc {
@@ -1495,6 +1549,7 @@
 					  <SLEEP_TCS   3>,
 					  <WAKE_TCS    3>,
 					  <CONTROL_TCS 1>;
+			#power-domain-cells = <0>;
 
 			rpmhcc: clock-controller {
 				compatible = "qcom,sc7180-rpmh-clk";
-- 
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