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Message-Id: <20250203-topic-sm8650-thermal-cpu-idle-v4-2-65e35f307301@linaro.org>
Date: Mon, 03 Feb 2025 14:23:18 +0100
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, Neil Armstrong <neil.armstrong@...aro.org>
Subject: [PATCH v4 2/4] arm64: dts: qcom: sm8650: setup gpu thermal with
higher temperatures
On the SM8650, the dynamic clock and voltage scaling (DCVS) for the GPU
is done from the HLOS, but the GPU can achieve a much higher temperature
before failing according the reference downstream implementation.
Set higher temperatures in the GPU trip points corresponding to
the temperatures provided by Qualcomm in the dowstream source, much
closer to the junction temperature and with a higher critical
temperature trip in the case the HLOS DCVS cannot handle the
temperature surge.
The tsens MAX_THRESHOLD is set to 120C on those platforms, so set
the hot to 110C to leave a chance to HLOS to react and critical to
115C to avoid the monitor thermal shutdown.
Fixes: 497624ed5506 ("arm64: dts: qcom: sm8650: Throttle the GPU when overheating")
Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
---
arch/arm64/boot/dts/qcom/sm8650.dtsi | 64 ++++++++++++++++++------------------
1 file changed, 32 insertions(+), 32 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/sm8650.dtsi b/arch/arm64/boot/dts/qcom/sm8650.dtsi
index 95509ce2713d4fcc3dbe0c5cd5827312d5681af4..798265e0300e7c7934e04cd971e3b9d3d55e3bec 100644
--- a/arch/arm64/boot/dts/qcom/sm8650.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8650.dtsi
@@ -6173,20 +6173,20 @@ map0 {
trips {
gpu0_alert0: trip-point0 {
- temperature = <85000>;
+ temperature = <95000>;
hysteresis = <1000>;
type = "passive";
};
trip-point1 {
- temperature = <90000>;
+ temperature = <110000>;
hysteresis = <1000>;
type = "hot";
};
trip-point2 {
- temperature = <110000>;
- hysteresis = <1000>;
+ temperature = <115000>;
+ hysteresis = <0>;
type = "critical";
};
};
@@ -6206,20 +6206,20 @@ map0 {
trips {
gpu1_alert0: trip-point0 {
- temperature = <85000>;
+ temperature = <95000>;
hysteresis = <1000>;
type = "passive";
};
trip-point1 {
- temperature = <90000>;
+ temperature = <110000>;
hysteresis = <1000>;
type = "hot";
};
trip-point2 {
- temperature = <110000>;
- hysteresis = <1000>;
+ temperature = <115000>;
+ hysteresis = <0>;
type = "critical";
};
};
@@ -6239,20 +6239,20 @@ map0 {
trips {
gpu2_alert0: trip-point0 {
- temperature = <85000>;
+ temperature = <95000>;
hysteresis = <1000>;
type = "passive";
};
trip-point1 {
- temperature = <90000>;
+ temperature = <110000>;
hysteresis = <1000>;
type = "hot";
};
trip-point2 {
- temperature = <110000>;
- hysteresis = <1000>;
+ temperature = <115000>;
+ hysteresis = <0>;
type = "critical";
};
};
@@ -6272,20 +6272,20 @@ map0 {
trips {
gpu3_alert0: trip-point0 {
- temperature = <85000>;
+ temperature = <95000>;
hysteresis = <1000>;
type = "passive";
};
trip-point1 {
- temperature = <90000>;
+ temperature = <110000>;
hysteresis = <1000>;
type = "hot";
};
trip-point2 {
- temperature = <110000>;
- hysteresis = <1000>;
+ temperature = <115000>;
+ hysteresis = <0>;
type = "critical";
};
};
@@ -6305,20 +6305,20 @@ map0 {
trips {
gpu4_alert0: trip-point0 {
- temperature = <85000>;
+ temperature = <95000>;
hysteresis = <1000>;
type = "passive";
};
trip-point1 {
- temperature = <90000>;
+ temperature = <110000>;
hysteresis = <1000>;
type = "hot";
};
trip-point2 {
- temperature = <110000>;
- hysteresis = <1000>;
+ temperature = <115000>;
+ hysteresis = <0>;
type = "critical";
};
};
@@ -6338,20 +6338,20 @@ map0 {
trips {
gpu5_alert0: trip-point0 {
- temperature = <85000>;
+ temperature = <95000>;
hysteresis = <1000>;
type = "passive";
};
trip-point1 {
- temperature = <90000>;
+ temperature = <110000>;
hysteresis = <1000>;
type = "hot";
};
trip-point2 {
- temperature = <110000>;
- hysteresis = <1000>;
+ temperature = <115000>;
+ hysteresis = <0>;
type = "critical";
};
};
@@ -6371,20 +6371,20 @@ map0 {
trips {
gpu6_alert0: trip-point0 {
- temperature = <85000>;
+ temperature = <95000>;
hysteresis = <1000>;
type = "passive";
};
trip-point1 {
- temperature = <90000>;
+ temperature = <110000>;
hysteresis = <1000>;
type = "hot";
};
trip-point2 {
- temperature = <110000>;
- hysteresis = <1000>;
+ temperature = <115000>;
+ hysteresis = <0>;
type = "critical";
};
};
@@ -6404,20 +6404,20 @@ map0 {
trips {
gpu7_alert0: trip-point0 {
- temperature = <85000>;
+ temperature = <95000>;
hysteresis = <1000>;
type = "passive";
};
trip-point1 {
- temperature = <90000>;
+ temperature = <110000>;
hysteresis = <1000>;
type = "hot";
};
trip-point2 {
- temperature = <110000>;
- hysteresis = <1000>;
+ temperature = <115000>;
+ hysteresis = <0>;
type = "critical";
};
};
--
2.34.1
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