[PATCH v2 1/9] arm64: dts: qcom: shikra: Add CPU idle states

[Sneh Mankad]

Add idle states for the  CPUs as well as the whole cluster. This enables
deeper-than-WFI cpuidle.

Signed-off-by: Sneh Mankad <sneh.mankad at oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/shikra.dtsi | 93 ++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/shikra.dtsi b/arch/arm64/boot/dts/qcom/shikra.dtsi
index 4e5bc9e17c8ed8914733ac9fdc9b69128b40216e..df4a7181ff80da0b75287bf4b96f82facb152b46 100644
--- a/arch/arm64/boot/dts/qcom/shikra.dtsi
+++ b/arch/arm64/boot/dts/qcom/shikra.dtsi
@@ -40,6 +40,8 @@ cpu0: cpu at 0 {
 			compatible = "arm,cortex-a55";
 			reg = <0x0 0x0>;
 			enable-method = "psci";
+			power-domains = <&cpu_pd0>;
+			power-domain-names = "psci";
 			next-level-cache = <&l3>;
 			capacity-dmips-mhz = <1024>;
 			dynamic-power-coefficient = <100>;
@@ -50,6 +52,8 @@ cpu1: cpu at 100 {
 			compatible = "arm,cortex-a55";
 			reg = <0x0 0x100>;
 			enable-method = "psci";
+			power-domains = <&cpu_pd1>;
+			power-domain-names = "psci";
 			next-level-cache = <&l3>;
 			capacity-dmips-mhz = <1024>;
 			dynamic-power-coefficient = <100>;
@@ -60,6 +64,8 @@ cpu2: cpu at 200 {
 			compatible = "arm,cortex-a55";
 			reg = <0x0 0x200>;
 			enable-method = "psci";
+			power-domains = <&cpu_pd2>;
+			power-domain-names = "psci";
 			next-level-cache = <&l3>;
 			capacity-dmips-mhz = <1024>;
 			dynamic-power-coefficient = <100>;
@@ -70,6 +76,8 @@ cpu3: cpu at 300 {
 			compatible = "arm,cortex-a78c";
 			reg = <0x0 0x300>;
 			enable-method = "psci";
+			power-domains = <&cpu_pd3>;
+			power-domain-names = "psci";
 			next-level-cache = <&l2_3>;
 			capacity-dmips-mhz = <1946>;
 			dynamic-power-coefficient = <489>;
@@ -105,6 +113,61 @@ core0 {
 			};
 		};
 
+		idle-states {
+			entry-method = "psci";
+
+			little_cpu_sleep_0: cpu-sleep-0-0 {
+				compatible = "arm,idle-state";
+				idle-state-name = "little-power-down";
+				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-pll-power-down";
+				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-down";
+				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-pll-power-down";
+				arm,psci-suspend-param = <0x40000004>;
+				entry-latency-us = <526>;
+				exit-latency-us = <1854>;
+				min-residency-us = <5555>;
+				local-timer-stop;
+			};
+		};
+
+		domain_idle_states: domain-idle-states {
+			cluster_sleep_apss_off: cluster-sleep-0 {
+				compatible = "domain-idle-state";
+				idle-state-name = "cluster-power-down";
+				arm,psci-suspend-param = <0x41000044>;
+				entry-latency-us = <2752>;
+				exit-latency-us = <3038>;
+				min-residency-us = <6118>;
+			};
+		};
+
 		l3: l3-cache {
 			compatible = "cache";
 			cache-level = <3>;
@@ -144,6 +207,36 @@ pmu-a78c {
 	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 = <&big_cpu_sleep_0 &big_cpu_sleep_1>;
+		};
+
+		cluster_pd: power-domain-cluster {
+			#power-domain-cells = <0>;
+			power-domains = <&mpm>;
+			domain-idle-states = <&cluster_sleep_apss_off>;
+		};
 	};
 
 	rpm: remoteproc {

-- 
2.34.1