[RFC v3 12/12] ARM64: dts: Define CPU power domain for MSM8916
From: Lina Iyer <hidden>
Date: 2016-03-01 21:15:31
Also in:
linux-arm-kernel, linux-arm-msm, linux-pm
Subsystem:
arm/qualcomm mailing list, arm/qualcomm support, the rest · Maintainers:
Bjorn Andersson, Konrad Dybcio, Linus Torvalds
Define power domain and the power states for the domain as defined by the PSCI firmware. The 8916 firmware supports OS initiated method of powering off the CPU clusters. Cc: <redacted> Signed-off-by: Lina Iyer <redacted> --- arch/arm64/boot/dts/qcom/msm8916.dtsi | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/msm8916.dtsi b/arch/arm64/boot/dts/qcom/msm8916.dtsi
index b7839a8..62dade8 100644
--- a/arch/arm64/boot/dts/qcom/msm8916.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916.dtsi@@ -63,6 +63,7 @@ reg = <0x0>; enable-method = "psci"; cpu-idle-states = <&CPU_SPC>; + power-domains = <&CPU_PD>; }; CPU1: cpu@1 {
@@ -71,6 +72,7 @@ reg = <0x1>; enable-method = "psci"; cpu-idle-states = <&CPU_SPC>; + power-domains = <&CPU_PD>; }; CPU2: cpu@2 {
@@ -79,6 +81,7 @@ reg = <0x2>; enable-method = "psci"; cpu-idle-states = <&CPU_SPC>; + power-domains = <&CPU_PD>; }; CPU3: cpu@3 {
@@ -87,6 +90,7 @@ reg = <0x3>; enable-method = "psci"; cpu-idle-states = <&CPU_SPC>; + power-domains = <&CPU_PD>; }; idle-states {
@@ -101,6 +105,27 @@ }; }; + CPU_PD: cpu-pd@0 { + #power-domain-cells = <0>; + power-states = <&CLUSTER_RET>, <&CLUSTER_PWR_DWN>; + }; + + pd-power-states { + CLUSTER_RET: power-state@1 { + state-param = <0x1000010>; + entry-latency-us = <500>; + exit-latency-us = <500>; + residency-us = <2000>; + }; + + CLUSTER_PWR_DWN: power-state@2 { + state-param = <0x1000030>; + entry-latency-us = <2000>; + exit-latency-us = <2000>; + residency-us = <6000>; + }; + }; + psci { compatible = "arm,psci-1.0"; method = "smc";
--
2.1.4