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Subject[PATCH v3 7/7] arm64: dts: qcom: sc7180: Convert to the hierarchical CPU topology layout
Date
To enable the OS to manage last-man standing activities for a CPU, while
an idle state for a group of CPUs is selected, let's convert the sc7180
platform into using the hierarchical CPU topology layout.

Signed-off-by: Maulik Shah <mkshah@codeaurora.org>
---
arch/arm64/boot/dts/qcom/sc7180.dtsi | 105 ++++++++++++++++++++++++++---------
1 file changed, 80 insertions(+), 25 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
index 0aa0ced..c366d10 100644
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -86,9 +86,8 @@
compatible = "arm,armv8";
reg = <0x0 0x0>;
enable-method = "psci";
- cpu-idle-states = <&LITTLE_CPU_SLEEP_0
- &LITTLE_CPU_SLEEP_1
- &CLUSTER_SLEEP_0>;
+ power-domains = <&CPU_PD0>;
+ power-domain-names = "psci";
next-level-cache = <&L2_0>;
#cooling-cells = <2>;
qcom,freq-domain = <&cpufreq_hw 0>;
@@ -106,9 +105,8 @@
compatible = "arm,armv8";
reg = <0x0 0x100>;
enable-method = "psci";
- cpu-idle-states = <&LITTLE_CPU_SLEEP_0
- &LITTLE_CPU_SLEEP_1
- &CLUSTER_SLEEP_0>;
+ power-domains = <&CPU_PD1>;
+ power-domain-names = "psci";
next-level-cache = <&L2_100>;
#cooling-cells = <2>;
qcom,freq-domain = <&cpufreq_hw 0>;
@@ -123,9 +121,8 @@
compatible = "arm,armv8";
reg = <0x0 0x200>;
enable-method = "psci";
- cpu-idle-states = <&LITTLE_CPU_SLEEP_0
- &LITTLE_CPU_SLEEP_1
- &CLUSTER_SLEEP_0>;
+ power-domains = <&CPU_PD2>;
+ power-domain-names = "psci";
next-level-cache = <&L2_200>;
#cooling-cells = <2>;
qcom,freq-domain = <&cpufreq_hw 0>;
@@ -140,9 +137,8 @@
compatible = "arm,armv8";
reg = <0x0 0x300>;
enable-method = "psci";
- cpu-idle-states = <&LITTLE_CPU_SLEEP_0
- &LITTLE_CPU_SLEEP_1
- &CLUSTER_SLEEP_0>;
+ power-domains = <&CPU_PD3>;
+ power-domain-names = "psci";
next-level-cache = <&L2_300>;
#cooling-cells = <2>;
qcom,freq-domain = <&cpufreq_hw 0>;
@@ -157,9 +153,8 @@
compatible = "arm,armv8";
reg = <0x0 0x400>;
enable-method = "psci";
- cpu-idle-states = <&LITTLE_CPU_SLEEP_0
- &LITTLE_CPU_SLEEP_1
- &CLUSTER_SLEEP_0>;
+ power-domains = <&CPU_PD4>;
+ power-domain-names = "psci";
next-level-cache = <&L2_400>;
#cooling-cells = <2>;
qcom,freq-domain = <&cpufreq_hw 0>;
@@ -174,9 +169,8 @@
compatible = "arm,armv8";
reg = <0x0 0x500>;
enable-method = "psci";
- cpu-idle-states = <&LITTLE_CPU_SLEEP_0
- &LITTLE_CPU_SLEEP_1
- &CLUSTER_SLEEP_0>;
+ power-domains = <&CPU_PD5>;
+ power-domain-names = "psci";
next-level-cache = <&L2_500>;
#cooling-cells = <2>;
qcom,freq-domain = <&cpufreq_hw 0>;
@@ -191,9 +185,8 @@
compatible = "arm,armv8";
reg = <0x0 0x600>;
enable-method = "psci";
- cpu-idle-states = <&BIG_CPU_SLEEP_0
- &BIG_CPU_SLEEP_1
- &CLUSTER_SLEEP_0>;
+ power-domains = <&CPU_PD6>;
+ power-domain-names = "psci";
next-level-cache = <&L2_600>;
#cooling-cells = <2>;
qcom,freq-domain = <&cpufreq_hw 1>;
@@ -208,9 +201,8 @@
compatible = "arm,armv8";
reg = <0x0 0x700>;
enable-method = "psci";
- cpu-idle-states = <&BIG_CPU_SLEEP_0
- &BIG_CPU_SLEEP_1
- &CLUSTER_SLEEP_0>;
+ power-domains = <&CPU_PD7>;
+ power-domain-names = "psci";
next-level-cache = <&L2_700>;
#cooling-cells = <2>;
qcom,freq-domain = <&cpufreq_hw 1>;
@@ -264,7 +256,7 @@
};

CLUSTER_SLEEP_0: cluster-sleep-0 {
- compatible = "arm,idle-state";
+ compatible = "domain-idle-state";
idle-state-name = "cluster-power-down";
arm,psci-suspend-param = <0x40003444>;
entry-latency-us = <3263>;
@@ -375,6 +367,68 @@
psci {
compatible = "arm,psci-1.0";
method = "smc";
+
+ CPU_PD0: cpu-pd0 {
+ #power-domain-cells = <0>;
+ power-domains = <&CLUSTER_PD>;
+ domain-idle-states = <&LITTLE_CPU_SLEEP_0>,
+ <&LITTLE_CPU_SLEEP_1>;
+ };
+
+ CPU_PD1: cpu-pd1 {
+ #power-domain-cells = <0>;
+ power-domains = <&CLUSTER_PD>;
+ domain-idle-states = <&LITTLE_CPU_SLEEP_0>,
+ <&LITTLE_CPU_SLEEP_1>;
+ };
+
+ CPU_PD2: cpu-pd2 {
+ #power-domain-cells = <0>;
+ power-domains = <&CLUSTER_PD>;
+ domain-idle-states = <&LITTLE_CPU_SLEEP_0>,
+ <&LITTLE_CPU_SLEEP_1>;
+ };
+
+ CPU_PD3: cpu-pd3 {
+ #power-domain-cells = <0>;
+ power-domains = <&CLUSTER_PD>;
+ domain-idle-states = <&LITTLE_CPU_SLEEP_0>,
+ <&LITTLE_CPU_SLEEP_1>;
+ };
+
+ CPU_PD4: cpu-pd4 {
+ #power-domain-cells = <0>;
+ power-domains = <&CLUSTER_PD>;
+ domain-idle-states = <&LITTLE_CPU_SLEEP_0>,
+ <&LITTLE_CPU_SLEEP_1>;
+ };
+
+ CPU_PD5: cpu-pd5 {
+ #power-domain-cells = <0>;
+ power-domains = <&CLUSTER_PD>;
+ domain-idle-states = <&LITTLE_CPU_SLEEP_0>,
+ <&LITTLE_CPU_SLEEP_1>;
+ };
+
+ CPU_PD6: cpu-pd6 {
+ #power-domain-cells = <0>;
+ power-domains = <&CLUSTER_PD>;
+ domain-idle-states = <&BIG_CPU_SLEEP_0>,
+ <&BIG_CPU_SLEEP_1>;
+ };
+
+ CPU_PD7: cpu-pd7 {
+ #power-domain-cells = <0>;
+ power-domains = <&CLUSTER_PD>;
+ domain-idle-states = <&BIG_CPU_SLEEP_0>,
+ <&BIG_CPU_SLEEP_1>;
+ };
+
+ CLUSTER_PD: cluster-pd {
+ #power-domain-cells = <0>;
+ power-domains = <&apps_rsc>;
+ domain-idle-states = <&CLUSTER_SLEEP_0>;
+ };
};

soc: soc {
@@ -1495,6 +1549,7 @@
<SLEEP_TCS 3>,
<WAKE_TCS 3>,
<CONTROL_TCS 1>;
+ #power-domain-cells = <0>;

rpmhcc: clock-controller {
compatible = "qcom,sc7180-rpmh-clk";
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
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