linux-kernel - [PATCH v5 4/5] arm64: dts: qcom: qcs8300: Add GPU cooling

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250903-a623-gpu-support-v5-4-5398585e2981@oss.qualcomm.com>
Date: Wed, 03 Sep 2025 12:49:55 +0530
From: Akhil P Oommen <akhilpo@....qualcomm.com>
To: Rob Clark <robin.clark@....qualcomm.com>,
        Bjorn Andersson <andersson@...nel.org>, Sean Paul <sean@...rly.run>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Jessica Zhang <jessica.zhang@....qualcomm.com>,
        Gaurav Kohli <quic_gkohli@...cinc.com>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Jie Zhang <quic_jiezh@...cinc.com>,
        Puranam V G Tejaswi <quic_pvgtejas@...cinc.com>,
        Akhil P Oommen <akhilpo@....qualcomm.com>
Subject: [PATCH v5 4/5] arm64: dts: qcom: qcs8300: Add GPU cooling

From: Gaurav Kohli <quic_gkohli@...cinc.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 115°C.

Signed-off-by: Gaurav Kohli <quic_gkohli@...cinc.com>
Signed-off-by: Akhil P Oommen <akhilpo@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/qcs8300.dtsi | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qcs8300.dtsi b/arch/arm64/boot/dts/qcom/qcs8300.dtsi
index 00e6131e6b24def4ff9566c14398aaa86efe557c..57b8bd6a089ce8b9a1a63be3fa778a633b4025a6 100644
--- a/arch/arm64/boot/dts/qcom/qcs8300.dtsi
+++ b/arch/arm64/boot/dts/qcom/qcs8300.dtsi
@@ -18,6 +18,7 @@
 #include <dt-bindings/power/qcom,rpmhpd.h>
 #include <dt-bindings/power/qcom-rpmpd.h>
 #include <dt-bindings/soc/qcom,rpmh-rsc.h>
+#include <dt-bindings/thermal/thermal.h>
 
 / {
 	interrupt-parent = <&intc>;
@@ -5846,12 +5847,25 @@ gpuss-0-thermal {
 			thermal-sensors = <&tsens0 5>;
 
 			trips {
+				gpuss0_alert0: trip-point0 {
+					temperature = <115000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
 				gpuss0-critical {
 					temperature = <125000>;
 					hysteresis = <1000>;
 					type = "critical";
 				};
 			};
+
+			cooling-maps {
+				map0 {
+					trip = <&gpuss0_alert0>;
+					cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
 		};
 
 		audio-thermal {
@@ -5966,12 +5980,25 @@ gpuss-1-thermal {
 			thermal-sensors = <&tsens1 5>;
 
 			trips {
+				gpuss1_alert0: trip-point0 {
+					temperature = <115000>;
+					hysteresis = <5000>;
+					type = "passive";
+				};
+
 				gpuss1-critical {
 					temperature = <125000>;
 					hysteresis = <1000>;
 					type = "critical";
 				};
 			};
+
+			cooling-maps {
+				map0 {
+					trip = <&gpuss1_alert0>;
+					cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
 		};
 
 		video-thermal {

-- 
2.50.1