[RFC,12/13] qcom: cpuidle: Add cpuidle device nodes for 8974 chipset

Message ID 1407470722-23015-13-git-send-email-lina.iyer@linaro.org
State New
Headers show

Commit Message

Lina Iyer Aug. 8, 2014, 4:05 a.m.
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@linaro.org>
---
 arch/arm/boot/dts/qcom-msm8974-pm.dtsi | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

Patch

diff --git a/arch/arm/boot/dts/qcom-msm8974-pm.dtsi b/arch/arm/boot/dts/qcom-msm8974-pm.dtsi
index 8fe00f1..4e3c206 100644
--- a/arch/arm/boot/dts/qcom-msm8974-pm.dtsi
+++ b/arch/arm/boot/dts/qcom-msm8974-pm.dtsi
@@ -122,4 +122,25 @@ 
 		qcom,cpu-alias-addr = <0x10000>;
 		qcom,sleep-status-mask= <0x80000>;
 	};
+
+	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>;
+		};
+	};
 };