[PATCH v3 23/28] ARM: dts: qcom: apq8064: enable passive CPU cooling

Dmitry Baryshkov
2023-07-02T17:43:53Z

Wire up CPUs and thermal trip points to save the SoC from overheating by
lowering the CPU frequency.

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
arch/arm/boot/dts/qcom/qcom-apq8064.dtsi | 29 ++++++++++++++++++++++++
1 file changed, 29 insertions(+)

diff --git a/arch/arm/boot/dts/qcom/qcom-apq8064.dtsi b/arch/arm/boot/dts/qcom/qcom-apq8064.dtsi
index 5c9daa997e72..cc23adc13444 100644
--- a/arch/arm/boot/dts/qcom/qcom-apq8064.dtsi
+++ b/arch/arm/boot/dts/qcom/qcom-apq8064.dtsi
@@ -11,6 +11,7 @@
#include <dt-bindings/soc/qcom,krait-l2-cache.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/thermal/thermal.h>
/ {
#address-cells = <1>;
#size-cells = <1>;
@@ -699,6 +700,13 @@ cpu_crit0: trip1 {
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&cpu_alert0>;
+ cooling-device = <&CPU0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};

cpu1-thermal {
@@ -720,6 +728,13 @@ cpu_crit1: trip1 {
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&cpu_alert1>;
+ cooling-device = <&CPU1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};

cpu2-thermal {
@@ -741,6 +756,13 @@ cpu_crit2: trip1 {
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&cpu_alert2>;
+ cooling-device = <&CPU2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};

cpu3-thermal {
@@ -762,6 +784,13 @@ cpu_crit3: trip1 {
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&cpu_alert3>;
+ cooling-device = <&CPU3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
};

--
2.39.2