arm64: dts: qcom: sc7280: Add cpuidle states

Add cpuidle states for little and big cpus.
The latency values are preliminary placeholders and will be updated
once testing provides the real numbers.

Signed-off-by: Maulik Shah <mkshah@codeaurora.org>
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/1615461961-17716-14-git-send-email-rnayak@codeaurora.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
index 9c34169..64d4ba1 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
@@ -63,6 +63,9 @@
                        compatible = "arm,kryo";
                        reg = <0x0 0x0>;
                        enable-method = "psci";
+                       cpu-idle-states = <&LITTLE_CPU_SLEEP_0
+                                          &LITTLE_CPU_SLEEP_1
+                                          &CLUSTER_SLEEP_0>;
                        next-level-cache = <&L2_0>;
                        L2_0: l2-cache {
                                compatible = "cache";
@@ -78,6 +81,9 @@
                        compatible = "arm,kryo";
                        reg = <0x0 0x100>;
                        enable-method = "psci";
+                       cpu-idle-states = <&LITTLE_CPU_SLEEP_0
+                                          &LITTLE_CPU_SLEEP_1
+                                          &CLUSTER_SLEEP_0>;
                        next-level-cache = <&L2_100>;
                        L2_100: l2-cache {
                                compatible = "cache";
@@ -90,6 +96,9 @@
                        compatible = "arm,kryo";
                        reg = <0x0 0x200>;
                        enable-method = "psci";
+                       cpu-idle-states = <&LITTLE_CPU_SLEEP_0
+                                          &LITTLE_CPU_SLEEP_1
+                                          &CLUSTER_SLEEP_0>;
                        next-level-cache = <&L2_200>;
                        L2_200: l2-cache {
                                compatible = "cache";
@@ -102,6 +111,9 @@
                        compatible = "arm,kryo";
                        reg = <0x0 0x300>;
                        enable-method = "psci";
+                       cpu-idle-states = <&LITTLE_CPU_SLEEP_0
+                                          &LITTLE_CPU_SLEEP_1
+                                          &CLUSTER_SLEEP_0>;
                        next-level-cache = <&L2_300>;
                        L2_300: l2-cache {
                                compatible = "cache";
@@ -114,6 +126,9 @@
                        compatible = "arm,kryo";
                        reg = <0x0 0x400>;
                        enable-method = "psci";
+                       cpu-idle-states = <&BIG_CPU_SLEEP_0
+                                          &BIG_CPU_SLEEP_1
+                                          &CLUSTER_SLEEP_0>;
                        next-level-cache = <&L2_400>;
                        L2_400: l2-cache {
                                compatible = "cache";
@@ -126,6 +141,9 @@
                        compatible = "arm,kryo";
                        reg = <0x0 0x500>;
                        enable-method = "psci";
+                       cpu-idle-states = <&BIG_CPU_SLEEP_0
+                                          &BIG_CPU_SLEEP_1
+                                          &CLUSTER_SLEEP_0>;
                        next-level-cache = <&L2_500>;
                        L2_500: l2-cache {
                                compatible = "cache";
@@ -138,6 +156,9 @@
                        compatible = "arm,kryo";
                        reg = <0x0 0x600>;
                        enable-method = "psci";
+                       cpu-idle-states = <&BIG_CPU_SLEEP_0
+                                          &BIG_CPU_SLEEP_1
+                                          &CLUSTER_SLEEP_0>;
                        next-level-cache = <&L2_600>;
                        L2_600: l2-cache {
                                compatible = "cache";
@@ -150,12 +171,69 @@
                        compatible = "arm,kryo";
                        reg = <0x0 0x700>;
                        enable-method = "psci";
+                       cpu-idle-states = <&BIG_CPU_SLEEP_0
+                                          &BIG_CPU_SLEEP_1
+                                          &CLUSTER_SLEEP_0>;
                        next-level-cache = <&L2_700>;
                        L2_700: l2-cache {
                                compatible = "cache";
                                next-level-cache = <&L3_0>;
                        };
                };
+
+               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-rail-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-rail-power-down";
+                               arm,psci-suspend-param = <0x40000004>;
+                               entry-latency-us = <526>;
+                               exit-latency-us = <1854>;
+                               min-residency-us = <5555>;
+                               local-timer-stop;
+                       };
+
+                       CLUSTER_SLEEP_0: cluster-sleep-0 {
+                               compatible = "arm,idle-state";
+                               idle-state-name = "cluster-power-down";
+                               arm,psci-suspend-param = <0x40003444>;
+                               entry-latency-us = <3263>;
+                               exit-latency-us = <6562>;
+                               min-residency-us = <9926>;
+                               local-timer-stop;
+                       };
+               };
        };
 
        memory@80000000 {