Add device bindings for CPUs to suspend using PSCI as the enable-method.
Cc: <devicetree@xxxxxxxxxxxxxxx>
Signed-off-by: Lina Iyer <lina.iyer@xxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/msm8916.dtsi | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/msm8916.dtsi b/arch/arm64/boot/dts/qcom/msm8916.dtsi
index 9153214..b7839a8 100644
--- a/arch/arm64/boot/dts/qcom/msm8916.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916.dtsi
@@ -61,27 +61,51 @@
device_type = "cpu";
compatible = "arm,cortex-a53", "arm,armv8";
reg = <0x0>;
+ enable-method = "psci";
+ cpu-idle-states = <&CPU_SPC>;
};
CPU1: cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a53", "arm,armv8";
reg = <0x1>;
+ enable-method = "psci";
+ cpu-idle-states = <&CPU_SPC>;
};
CPU2: cpu@2 {
device_type = "cpu";
compatible = "arm,cortex-a53", "arm,armv8";
reg = <0x2>;
+ enable-method = "psci";
+ cpu-idle-states = <&CPU_SPC>;
};
CPU3: cpu@3 {
device_type = "cpu";
compatible = "arm,cortex-a53", "arm,armv8";
reg = <0x3>;
+ enable-method = "psci";
+ cpu-idle-states = <&CPU_SPC>;
+ };
+
+ idle-states {
+ CPU_SPC: spc {
+ compatible = "arm,idle-state";
+ arm,psci-suspend-param = <0x40000002>;
+ entry-latency-us = <130>;
+ exit-latency-us = <150>;
+ min-residency-us = <2000>;
+ local-timer-stop;
+ };
};
};
+ psci {
+ compatible = "arm,psci-1.0";
+ method = "smc";
+ };
+
timer {
compatible = "arm,armv8-timer";
interrupts = <GIC_PPI 2 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
--
2.1.4
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