[PATCH v2 6/8] arm64: dts: qcom: kaanapali: Add GPU cooling
Akhil P Oommen
akhilpo at oss.qualcomm.com
Sun Jul 5 01:00:10 PDT 2026
From: Gaurav Kohli <gaurav.kohli at oss.qualcomm.com>
Unlike the CPU, the GPU does not throttle its speed automatically when
it reaches high temperatures. Set up GPU cooling by throttling the GPU
speed when reaching 105°C.
Introduce a passive polling delay to ensure more than one "passive"
thermal point is considered when throttling the GPU thermal zones.
Signed-off-by: Gaurav Kohli <gaurav.kohli at oss.qualcomm.com>
---
arch/arm64/boot/dts/qcom/kaanapali.dtsi | 166 ++++++++++++++++++++++++++++++++
1 file changed, 166 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/kaanapali.dtsi b/arch/arm64/boot/dts/qcom/kaanapali.dtsi
index 009f0ae1ee16..b8acd9665575 100644
--- a/arch/arm64/boot/dts/qcom/kaanapali.dtsi
+++ b/arch/arm64/boot/dts/qcom/kaanapali.dtsi
@@ -26,6 +26,7 @@
#include <dt-bindings/soc/qcom,gpr.h>
#include <dt-bindings/soc/qcom,rpmh-rsc.h>
#include <dt-bindings/sound/qcom,q6dsp-lpass-ports.h>
+#include <dt-bindings/thermal/thermal.h>
#include "kaanapali-ipcc.h"
@@ -7059,9 +7060,17 @@ nsphmx-3-critical {
};
gpuss-0-thermal {
+ polling-delay-passive = <10>;
+
thermal-sensors = <&tsens5 0>;
trips {
+ gpuss_0_alert0: gpuss-0-alert0 {
+ temperature = <105000>;
+ hysteresis = <5000>;
+ type = "passive";
+ };
+
gpuss-0-hot {
temperature = <120000>;
hysteresis = <5000>;
@@ -7074,12 +7083,27 @@ gpuss-0-critical {
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&gpuss_0_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
gpuss-1-thermal {
+ polling-delay-passive = <10>;
+
thermal-sensors = <&tsens5 1>;
trips {
+ gpuss_1_alert0: gpuss-1-alert0 {
+ temperature = <105000>;
+ hysteresis = <5000>;
+ type = "passive";
+ };
+
gpuss-1-hot {
temperature = <120000>;
hysteresis = <5000>;
@@ -7092,12 +7116,27 @@ gpuss-1-critical {
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&gpuss_1_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
gpuss-2-thermal {
+ polling-delay-passive = <10>;
+
thermal-sensors = <&tsens5 2>;
trips {
+ gpuss_2_alert0: gpuss-2-alert0 {
+ temperature = <105000>;
+ hysteresis = <5000>;
+ type = "passive";
+ };
+
gpuss-2-hot {
temperature = <120000>;
hysteresis = <5000>;
@@ -7110,12 +7149,27 @@ gpuss-2-critical {
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&gpuss_2_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
gpuss-3-thermal {
+ polling-delay-passive = <10>;
+
thermal-sensors = <&tsens5 3>;
trips {
+ gpuss_3_alert0: gpuss-3-alert0 {
+ temperature = <105000>;
+ hysteresis = <5000>;
+ type = "passive";
+ };
+
gpuss-3-hot {
temperature = <120000>;
hysteresis = <5000>;
@@ -7128,12 +7182,27 @@ gpuss-3-critical {
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&gpuss_3_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
gpuss-4-thermal {
+ polling-delay-passive = <10>;
+
thermal-sensors = <&tsens5 4>;
trips {
+ gpuss_4_alert0: gpuss-4-alert0 {
+ temperature = <105000>;
+ hysteresis = <5000>;
+ type = "passive";
+ };
+
gpuss-4-hot {
temperature = <120000>;
hysteresis = <5000>;
@@ -7146,12 +7215,27 @@ gpuss-4-critical {
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&gpuss_4_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
gpuss-5-thermal {
+ polling-delay-passive = <10>;
+
thermal-sensors = <&tsens5 5>;
trips {
+ gpuss_5_alert0: gpuss-5-alert0 {
+ temperature = <105000>;
+ hysteresis = <5000>;
+ type = "passive";
+ };
+
gpuss-5-hot {
temperature = <120000>;
hysteresis = <5000>;
@@ -7164,12 +7248,27 @@ gpuss-5-critical {
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&gpuss_5_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
gpuss-6-thermal {
+ polling-delay-passive = <10>;
+
thermal-sensors = <&tsens5 6>;
trips {
+ gpuss_6_alert0: gpuss-6-alert0 {
+ temperature = <105000>;
+ hysteresis = <5000>;
+ type = "passive";
+ };
+
gpuss-6-hot {
temperature = <120000>;
hysteresis = <5000>;
@@ -7182,12 +7281,27 @@ gpuss-6-critical {
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&gpuss_6_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
gpuss-7-thermal {
+ polling-delay-passive = <10>;
+
thermal-sensors = <&tsens5 7>;
trips {
+ gpuss_7_alert0: gpuss-7-alert0 {
+ temperature = <105000>;
+ hysteresis = <5000>;
+ type = "passive";
+ };
+
gpuss-7-hot {
temperature = <120000>;
hysteresis = <5000>;
@@ -7200,12 +7314,27 @@ gpuss-7-critical {
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&gpuss_7_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
gpuss-8-thermal {
+ polling-delay-passive = <10>;
+
thermal-sensors = <&tsens5 8>;
trips {
+ gpuss_8_alert0: gpuss-8-alert0 {
+ temperature = <105000>;
+ hysteresis = <5000>;
+ type = "passive";
+ };
+
gpuss-8-hot {
temperature = <120000>;
hysteresis = <5000>;
@@ -7218,12 +7347,27 @@ gpuss-8-critical {
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&gpuss_8_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
gpuss-9-thermal {
+ polling-delay-passive = <10>;
+
thermal-sensors = <&tsens5 9>;
trips {
+ gpuss_9_alert0: gpuss-9-alert0 {
+ temperature = <105000>;
+ hysteresis = <5000>;
+ type = "passive";
+ };
+
gpuss-9-hot {
temperature = <120000>;
hysteresis = <5000>;
@@ -7236,12 +7380,27 @@ gpuss-9-critical {
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&gpuss_9_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
gpuss-10-thermal {
+ polling-delay-passive = <10>;
+
thermal-sensors = <&tsens5 10>;
trips {
+ gpuss_10_alert0: gpuss-10-alert0 {
+ temperature = <105000>;
+ hysteresis = <5000>;
+ type = "passive";
+ };
+
gpuss-10-hot {
temperature = <120000>;
hysteresis = <5000>;
@@ -7254,6 +7413,13 @@ gpuss-10-critical {
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&gpuss_10_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
ddr-thermal {
--
2.54.0
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