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Message-Id: <20240510-topic-gpus_are_cool_now-v1-12-ababc269a438@linaro.org>
Date: Fri, 10 May 2024 14:58:41 +0200
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Johan Hovold <johan+linaro@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, Bjorn Andersson <quic_bjorande@...cinc.com>,
Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH 12/12] arm64: dts: qcom: sm8650: Throttle the GPU when
overheating
Add an 85C passive trip point to ensure the thermal framework takes
sufficient action to prevent reaching junction temperature and a
110C critical point to help avoid hw damage.
Also, register the GPU as a cooling device and hook it up to the
right thermal zones.
Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
arch/arm64/boot/dts/qcom/sm8650.dtsi | 169 ++++++++++++++++++++++++++++-------
1 file changed, 137 insertions(+), 32 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/sm8650.dtsi b/arch/arm64/boot/dts/qcom/sm8650.dtsi
index 39e789b21acc..1b20d0fcd3ef 100644
--- a/arch/arm64/boot/dts/qcom/sm8650.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8650.dtsi
@@ -2626,6 +2626,7 @@ gpu: gpu@...0000 {
operating-points-v2 = <&gpu_opp_table>;
qcom,gmu = <&gmu>;
+ #cooling-cells = <2>;
status = "disabled";
@@ -6014,16 +6015,29 @@ gpuss0-thermal {
thermal-sensors = <&tsens2 1>;
+ cooling-maps {
+ map0 {
+ trip = <&gpu0_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+
trips {
- trip-point0 {
+ gpu0_alert0: trip-point0 {
+ temperature = <85000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+
+ trip-point1 {
temperature = <90000>;
- hysteresis = <2000>;
+ hysteresis = <1000>;
type = "hot";
};
- gpuss0-critical {
+ trip-point2 {
temperature = <110000>;
- hysteresis = <0>;
+ hysteresis = <1000>;
type = "critical";
};
};
@@ -6034,16 +6048,29 @@ gpuss1-thermal {
thermal-sensors = <&tsens2 2>;
+ cooling-maps {
+ map0 {
+ trip = <&gpu1_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+
trips {
- trip-point0 {
+ gpu1_alert0: trip-point0 {
+ temperature = <85000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+
+ trip-point1 {
temperature = <90000>;
- hysteresis = <2000>;
+ hysteresis = <1000>;
type = "hot";
};
- gpuss1-critical {
+ trip-point2 {
temperature = <110000>;
- hysteresis = <0>;
+ hysteresis = <1000>;
type = "critical";
};
};
@@ -6054,16 +6081,29 @@ gpuss2-thermal {
thermal-sensors = <&tsens2 3>;
+ cooling-maps {
+ map0 {
+ trip = <&gpu2_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+
trips {
- trip-point0 {
+ gpu2_alert0: trip-point0 {
+ temperature = <85000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+
+ trip-point1 {
temperature = <90000>;
- hysteresis = <2000>;
+ hysteresis = <1000>;
type = "hot";
};
- gpuss2-critical {
+ trip-point2 {
temperature = <110000>;
- hysteresis = <0>;
+ hysteresis = <1000>;
type = "critical";
};
};
@@ -6074,16 +6114,29 @@ gpuss3-thermal {
thermal-sensors = <&tsens2 4>;
+ cooling-maps {
+ map0 {
+ trip = <&gpu3_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+
trips {
- trip-point0 {
+ gpu3_alert0: trip-point0 {
+ temperature = <85000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+
+ trip-point1 {
temperature = <90000>;
- hysteresis = <2000>;
+ hysteresis = <1000>;
type = "hot";
};
- gpuss3-critical {
+ trip-point2 {
temperature = <110000>;
- hysteresis = <0>;
+ hysteresis = <1000>;
type = "critical";
};
};
@@ -6094,16 +6147,29 @@ gpuss4-thermal {
thermal-sensors = <&tsens2 5>;
+ cooling-maps {
+ map0 {
+ trip = <&gpu4_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+
trips {
- trip-point0 {
+ gpu4_alert0: trip-point0 {
+ temperature = <85000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+
+ trip-point1 {
temperature = <90000>;
- hysteresis = <2000>;
+ hysteresis = <1000>;
type = "hot";
};
- gpuss4-critical {
+ trip-point2 {
temperature = <110000>;
- hysteresis = <0>;
+ hysteresis = <1000>;
type = "critical";
};
};
@@ -6114,16 +6180,29 @@ gpuss5-thermal {
thermal-sensors = <&tsens2 6>;
+ cooling-maps {
+ map0 {
+ trip = <&gpu5_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+
trips {
- trip-point0 {
+ gpu5_alert0: trip-point0 {
+ temperature = <85000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+
+ trip-point1 {
temperature = <90000>;
- hysteresis = <2000>;
+ hysteresis = <1000>;
type = "hot";
};
- gpuss5-critical {
+ trip-point2 {
temperature = <110000>;
- hysteresis = <0>;
+ hysteresis = <1000>;
type = "critical";
};
};
@@ -6134,16 +6213,29 @@ gpuss6-thermal {
thermal-sensors = <&tsens2 7>;
+ cooling-maps {
+ map0 {
+ trip = <&gpu6_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+
trips {
- trip-point0 {
+ gpu6_alert0: trip-point0 {
+ temperature = <85000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+
+ trip-point1 {
temperature = <90000>;
- hysteresis = <2000>;
+ hysteresis = <1000>;
type = "hot";
};
- gpuss6-critical {
+ trip-point2 {
temperature = <110000>;
- hysteresis = <0>;
+ hysteresis = <1000>;
type = "critical";
};
};
@@ -6154,16 +6246,29 @@ gpuss7-thermal {
thermal-sensors = <&tsens2 8>;
+ cooling-maps {
+ map0 {
+ trip = <&gpu7_alert0>;
+ cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+
trips {
- trip-point0 {
+ gpu7_alert0: trip-point0 {
+ temperature = <85000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+
+ trip-point1 {
temperature = <90000>;
- hysteresis = <2000>;
+ hysteresis = <1000>;
type = "hot";
};
- gpuss7-critical {
+ trip-point2 {
temperature = <110000>;
- hysteresis = <0>;
+ hysteresis = <1000>;
type = "critical";
};
};
--
2.40.1
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