[PATCH v2 10/10] arm64: dts: Create SoC thermal zone for Juno

Punit Agrawal
2015-08-03T15:23:13Z

Setup a thermal zone driven by the SoC temperature sensor on Juno
r0. Create passive trip points and bind them to cpufreq cooling
devices that support the power extensions.

Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
---
arch/arm64/boot/dts/arm/juno.dts | 50 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 50 insertions(+)

diff --git a/arch/arm64/boot/dts/arm/juno.dts b/arch/arm64/boot/dts/arm/juno.dts
index d2e67f3..664961c 100644
--- a/arch/arm64/boot/dts/arm/juno.dts
+++ b/arch/arm64/boot/dts/arm/juno.dts
@@ -9,6 +9,7 @@
/dts-v1/;

#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/thermal/thermal.h>

/ {
model = "ARM Juno development board (r0)";
@@ -90,6 +91,8 @@
next-level-cache = <&A57_L2>;
clocks = <&scpi_dvfs 0>;
cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
+ #cooling-cells = <2>;
+ dynamic-power-coefficient = <530>;
};

A57_1: cpu@1 {
@@ -100,6 +103,8 @@
next-level-cache = <&A57_L2>;
clocks = <&scpi_dvfs 0>;
cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
+ #cooling-cells = <2>;
+ dynamic-power-coefficient = <530>;
};

A53_0: cpu@100 {
@@ -110,6 +115,8 @@
next-level-cache = <&A53_L2>;
clocks = <&scpi_dvfs 1>;
cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
+ #cooling-cells = <2>;
+ dynamic-power-coefficient = <140>;
};

A53_1: cpu@101 {
@@ -120,6 +127,8 @@
next-level-cache = <&A53_L2>;
clocks = <&scpi_dvfs 1>;
cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
+ #cooling-cells = <2>;
+ dynamic-power-coefficient = <140>;
};

A53_2: cpu@102 {
@@ -130,6 +139,8 @@
next-level-cache = <&A53_L2>;
clocks = <&scpi_dvfs 1>;
cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
+ #cooling-cells = <2>;
+ dynamic-power-coefficient = <140>;
};

A53_3: cpu@103 {
@@ -140,6 +151,8 @@
next-level-cache = <&A53_L2>;
clocks = <&scpi_dvfs 1>;
cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
+ #cooling-cells = <2>;
+ dynamic-power-coefficient = <140>;
};

A57_L2: l2-cache0 {
@@ -167,5 +180,42 @@
<&A53_3>;
};

+ thermal-zones {
+ soc_thermal {
+ polling-delay = <1000>;
+ polling-delay-passive = <100>;
+ sustainable-power = <2500>;
+
+ thermal-sensors = <&scpi_sensors0 3>;
+
+ trips {
+ threshold: trip-point@0 {
+ temperature = <55000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+ target: trip-point@1 {
+ temperature = <65000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+ };
+
+ cooling-maps {
+ map0 {
+ trip = <&target>;
+ cooling-device = <&A53_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ contribution = <2048>;
+ };
+ map1 {
+ trip = <&target>;
+ cooling-device = <&A57_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ contribution = <1024>;
+ };
+
+ };
+ };
+ };
+
#include "juno-base.dtsi"
};
--
2.1.4