arm64: dts: marvell: add CPU Idle power state support on Armada 7K/8K

This patch adds CPU deep Idle and Cluster deep Idle states BUT it defines
the idle state for each cpu (defined under cpu-idle-states parameter)
only for the quad version therefore it does NOT activate CPU Idle
capability for the other version.

[gregory: extract from a larger patch]
Signed-off-by: orenbh <orenbh@marvell.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>

diff --git a/arch/arm64/boot/dts/marvell/armada-ap806-quad.dtsi b/arch/arm64/boot/dts/marvell/armada-ap806-quad.dtsi
index 01ea662..64632c8 100644 (file)
--- a/arch/arm64/boot/dts/marvell/armada-ap806-quad.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-ap806-quad.dtsi
@@ -20,24 +20,28 @@
                        compatible = "arm,cortex-a72", "arm,armv8";
                        reg = <0x000>;
                        enable-method = "psci";
+                       cpu-idle-states = <&CPU_SLEEP_0>;
                };
                cpu1: cpu@1 {
                        device_type = "cpu";
                        compatible = "arm,cortex-a72", "arm,armv8";
                        reg = <0x001>;
                        enable-method = "psci";
+                       cpu-idle-states = <&CPU_SLEEP_0>;
                };
                cpu2: cpu@100 {
                        device_type = "cpu";
                        compatible = "arm,cortex-a72", "arm,armv8";
                        reg = <0x100>;
                        enable-method = "psci";
+                       cpu-idle-states = <&CPU_SLEEP_0>;
                };
                cpu3: cpu@101 {
                        device_type = "cpu";
                        compatible = "arm,cortex-a72", "arm,armv8";
                        reg = <0x101>;
                        enable-method = "psci";
+                       cpu-idle-states = <&CPU_SLEEP_0>;
                };
        };
 };

diff --git a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
index 9a5abad..3032f04 100644 (file)
--- a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
@@ -28,6 +28,33 @@
                method = "smc";
        };
 
+       cpus {
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               idle_states {
+                       entry_method = "arm,pcsi";
+
+                       CPU_SLEEP_0: cpu-sleep-0 {
+                               compatible = "arm,idle-state";
+                               local-timer-stop;
+                               arm,psci-suspend-param = <0x0010000>;
+                               entry-latency-us = <80>;
+                               exit-latency-us  = <160>;
+                               min-residency-us = <320>;
+                       };
+
+                       CLUSTER_SLEEP_0: cluster-sleep-0 {
+                               compatible = "arm,idle-state";
+                               local-timer-stop;
+                               arm,psci-suspend-param = <0x1010000>;
+                               entry-latency-us = <500>;
+                               exit-latency-us = <1000>;
+                               min-residency-us = <2500>;
+                       };
+               };
+       };
+
        ap806 {
                #address-cells = <2>;
                #size-cells = <2>;