Thread (24 messages) 24 messages, 4 authors, 2014-11-26
STALE4232d
Revisions (5)
  1. v9 [diff vs current]
  2. v10 current
  3. v12 [diff vs current]
  4. v13 [diff vs current]
  5. v14 [diff vs current]

[PATCH v10 09/10] arm: dts: qcom: Add idle states device nodes for 8084

From: Lina Iyer <hidden>
Date: 2014-11-21 18:03:56
Also in: linux-arm-kernel, linux-arm-msm, linux-pm
Subsystem: the rest · Maintainer: Linus Torvalds

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

Support standby and standalone power collapse (power down that does not
affect any SoC idle states) for each cpu.

Signed-off-by: Lina Iyer <redacted>
---
 arch/arm/boot/dts/qcom-apq8084.dtsi | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
diff --git a/arch/arm/boot/dts/qcom-apq8084.dtsi b/arch/arm/boot/dts/qcom-apq8084.dtsi
index 4466b9e..207be15 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_STBY &CPU_SPC>;
 		};
 
 		cpu@1 {
@@ -32,6 +33,7 @@
 			next-level-cache = <&L2>;
 			qcom,acc = <&acc1>;
 			qcom,saw = <&saw1>;
+			cpu-idle-states = <&CPU_STBY &CPU_SPC>;
 		};
 
 		cpu@2 {
@@ -42,6 +44,7 @@
 			next-level-cache = <&L2>;
 			qcom,acc = <&acc2>;
 			qcom,saw = <&saw2>;
+			cpu-idle-states = <&CPU_STBY &CPU_SPC>;
 		};
 
 		cpu@3 {
@@ -52,6 +55,7 @@
 			next-level-cache = <&L2>;
 			qcom,acc = <&acc3>;
 			qcom,saw = <&saw3>;
+			cpu-idle-states = <&CPU_STBY &CPU_SPC>;
 		};
 
 		L2: l2-cache {
@@ -59,6 +63,22 @@
 			cache-level = <2>;
 			qcom,saw = <&saw_l2>;
 		};
+
+		idle-states {
+			CPU_STBY: standby {
+				compatible = "qcom,idle-state-stby", "arm,idle-state";
+				entry-latency-us = <1>;
+				exit-latency-us = <1>;
+				min-residency-us = <2>;
+			};
+
+			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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