Add C-States and the respective residencies supported by the QCOM 8974
chipset. Current support is for WFI (clock gating) and Standlone-PC
(power down of the core).
Signed-off-by: Lina Iyer <lina.iyer@xxxxxxxxxx>
---
arch/arm/boot/dts/qcom-msm8974-pm.dtsi | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/arch/arm/boot/dts/qcom-msm8974-pm.dtsi b/arch/arm/boot/dts/qcom-msm8974-pm.dtsi
index d7d81ca..f15796e 100644
--- a/arch/arm/boot/dts/qcom-msm8974-pm.dtsi
+++ b/arch/arm/boot/dts/qcom-msm8974-pm.dtsi
@@ -88,4 +88,25 @@
qcom,cpu-vctl-mask = <0xf>;
qcom,saw2-spm-cmd-ret = [1f 00 03 00 0f];
};
+
+ qcom,cpuidle {
+ compatible = "qcom,cpuidle";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ qcom,cpu-level@0 {
+ reg = <0x0>;
+ qcom,state-name = "C1";
+ qcom,spm-cpu-mode = "wfi";
+ qcom,latency-us = <1>;
+ qcom,residency-us = <1>;
+ };
+
+ qcom,cpu-level@2 {
+ reg = <0x1>;
+ qcom,state-name = "C2";
+ qcom,spm-cpu-mode = "standalone_pc";
+ qcom,latency-us = <300>;
+ qcom,residency-us = <2000>;
+ };
+ };
};
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
