Setup a thermal zone driven by SoC temperature sensor.
Create passive trip points and bind them to CPUFreq cooling
device that supports power extension.
Based on the work done by Dien Pham <dien.pham.ry@xxxxxxxxxxx>
and others for r8a77990 SoC.
Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
---
arch/arm64/boot/dts/renesas/r9a07g043.dtsi | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r9a07g043.dtsi b/arch/arm64/boot/dts/renesas/r9a07g043.dtsi
index c0a57055af49..55081071293f 100644
--- a/arch/arm64/boot/dts/renesas/r9a07g043.dtsi
+++ b/arch/arm64/boot/dts/renesas/r9a07g043.dtsi
@@ -77,6 +77,7 @@ cpu0: cpu@0 {
compatible = "arm,cortex-a55";
reg = <0>;
device_type = "cpu";
+ #cooling-cells = <2>;
next-level-cache = <&L3_CA55>;
enable-method = "psci";
clocks = <&cpg CPG_CORE R9A07G043_CLK_I>;
@@ -849,6 +850,15 @@ cpu-thermal {
polling-delay-passive = <250>;
polling-delay = <1000>;
thermal-sensors = <&tsu 0>;
+ sustainable-power = <717>;
+
+ cooling-maps {
+ map0 {
+ trip = <&target>;
+ cooling-device = <&cpu0 0 2>;
+ contribution = <1024>;
+ };
+ };
trips {
sensor_crit: sensor-crit {
@@ -856,6 +866,12 @@ sensor_crit: sensor-crit {
hysteresis = <1000>;
type = "critical";
};
+
+ target: trip-point {
+ temperature = <100000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
};
};
};
--
2.25.1
