Thread (1 message) 1 message, 1 author, 2015-03-20
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[PATCH v17 08/10] ARM: dts: qcom: Add idle states device nodes for 8084

From: Lina Iyer <hidden>
Date: 2015-03-20 20:21:15
Also in: linux-arm-msm, linux-devicetree, linux-pm
Subsystem: the rest · Maintainer: Linus Torvalds

Add ARM common idle states device bindings for cpuidle support for APQ
8084.

Support Standalone power collapse (SPC) idle state (power down that does not
affect any SoC idle states) for each cpu.

Cc: Kumar Gala <redacted>
Signed-off-by: Lina Iyer <redacted>
---
 arch/arm/boot/dts/qcom-apq8084.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
diff --git a/arch/arm/boot/dts/qcom-apq8084.dtsi b/arch/arm/boot/dts/qcom-apq8084.dtsi
index 71182bf..6126d47 100644
--- a/arch/arm/boot/dts/qcom-apq8084.dtsi
+++ b/arch/arm/boot/dts/qcom-apq8084.dtsi
@@ -22,6 +22,7 @@
 			next-level-cache = <&L2>;
 			qcom,acc = <&acc0>;
 			qcom,saw = <&saw0>;
+			cpu-idle-states = <&CPU_SPC>;
 		};
 
 		cpu at 1 {
@@ -32,6 +33,7 @@
 			next-level-cache = <&L2>;
 			qcom,acc = <&acc1>;
 			qcom,saw = <&saw1>;
+			cpu-idle-states = <&CPU_SPC>;
 		};
 
 		cpu at 2 {
@@ -42,6 +44,7 @@
 			next-level-cache = <&L2>;
 			qcom,acc = <&acc2>;
 			qcom,saw = <&saw2>;
+			cpu-idle-states = <&CPU_SPC>;
 		};
 
 		cpu at 3 {
@@ -52,6 +55,7 @@
 			next-level-cache = <&L2>;
 			qcom,acc = <&acc3>;
 			qcom,saw = <&saw3>;
+			cpu-idle-states = <&CPU_SPC>;
 		};
 
 		L2: l2-cache {
@@ -59,6 +63,16 @@
 			cache-level = <2>;
 			qcom,saw = <&saw_l2>;
 		};
+
+		idle-states {
+			CPU_SPC: spc {
+				compatible = "qcom,idle-state-spc",
+						"arm,idle-state";
+				entry-latency-us = <150>;
+				exit-latency-us = <200>;
+				min-residency-us = <2000>;
+			};
+		};
 	};
 
 	cpu-pmu {
-- 
2.1.0
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