@@ -37,6 +37,7 @@
compatible = "arm,cortex-a57", "arm,armv8";
enable-method = "psci";
reg = <0x0>;
+ cpu-idle-states = <&CPU_SLEEP>;
};
cpu@1 {
@@ -44,6 +45,7 @@
compatible = "arm,cortex-a57", "arm,armv8";
enable-method = "psci";
reg = <0x1>;
+ cpu-idle-states = <&CPU_SLEEP>;
};
cpu@2 {
@@ -51,6 +53,7 @@
compatible = "arm,cortex-a57", "arm,armv8";
enable-method = "psci";
reg = <0x2>;
+ cpu-idle-states = <&CPU_SLEEP>;
};
cpu@3 {
@@ -58,6 +61,20 @@
compatible = "arm,cortex-a57", "arm,armv8";
enable-method = "psci";
reg = <0x3>;
+ cpu-idle-states = <&CPU_SLEEP>;
+ };
+
+ idle-states {
+ entry-method = "arm,psci";
+
+ CPU_SLEEP: cpu-sleep {
+ compatible = "arm,idle-state";
+ local-timer-stop;
+ arm,psci-suspend-param = <0x0010000>;
+ entry-latency-us = <20>;
+ exit-latency-us = <150>;
+ min-residency-us = <2100>;
+ };
};
};
Exynos7 has core power down state where cores can be powered off independently. This patch adds support for this state. Signed-off-by: Chander Kashyap <k.chander@samsung.com> --- This patch has following dependencies: - [PATCH v5 0/8] arch: arm64: Enable support for Samsung Exynos7 SoC http://www.spinics.net/lists/linux-samsung-soc/msg37047.html Changes in v2: - Moved the cpu-idle-state property after reg property - removed the status property. arch/arm64/boot/dts/exynos/exynos7.dtsi | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)