linux-kernel - [PATCH v2 2/3] arm64: dts: qcom: sc7180: Add gpu cooling support

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Message-Id: <1603113268-21161-2-git-send-email-akhilpo@codeaurora.org>
Date:   Mon, 19 Oct 2020 18:44:27 +0530
From:   Akhil P Oommen <akhilpo@...eaurora.org>
To:     freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org
Cc:     dri-devel@...edesktop.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, jcrouse@...eaurora.org,
        mka@...omium.org, robdclark@...il.com, dianders@...omium.org
Subject: [PATCH v2 2/3] arm64: dts: qcom: sc7180: Add gpu cooling support

Add cooling-cells property and the cooling maps for the gpu tzones
to support GPU cooling.

Signed-off-by: Akhil P Oommen <akhilpo@...eaurora.org>
---
The thermal policy should be set as 'step_wise' for gpu tzones from
the userspace during boot up.

 arch/arm64/boot/dts/qcom/sc7180.dtsi | 30 +++++++++++++++++++++++-------
 1 file changed, 23 insertions(+), 7 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
index d46b383..a7ea029 100644
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -2,7 +2,7 @@
 /*
  * SC7180 SoC device tree source
  *
- * Copyright (c) 2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2019-20, The Linux Foundation. All rights reserved.
  */
 
 #include <dt-bindings/clock/qcom,dispcc-sc7180.h>
@@ -1886,6 +1886,8 @@
 			operating-points-v2 = <&gpu_opp_table>;
 			qcom,gmu = <&gmu>;
 
+			#cooling-cells = <2>;
+
 			interconnects = <&gem_noc MASTER_GFX3D &mc_virt SLAVE_EBI1>;
 			interconnect-names = "gfx-mem";
 
@@ -3825,16 +3827,16 @@
 		};
 
 		gpuss0-thermal {
-			polling-delay-passive = <0>;
+			polling-delay-passive = <100>;
 			polling-delay = <0>;
 
 			thermal-sensors = <&tsens0 13>;
 
 			trips {
 				gpuss0_alert0: trip-point0 {
-					temperature = <90000>;
+					temperature = <95000>;
 					hysteresis = <2000>;
-					type = "hot";
+					type = "passive";
 				};
 
 				gpuss0_crit: gpuss0_crit {
@@ -3843,19 +3845,26 @@
 					type = "critical";
 				};
 			};
+
+			cooling-maps {
+				map0 {
+					trip = <&gpuss0_alert0>;
+					cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
 		};
 
 		gpuss1-thermal {
-			polling-delay-passive = <0>;
+			polling-delay-passive = <100>;
 			polling-delay = <0>;
 
 			thermal-sensors = <&tsens0 14>;
 
 			trips {
 				gpuss1_alert0: trip-point0 {
-					temperature = <90000>;
+					temperature = <95000>;
 					hysteresis = <2000>;
-					type = "hot";
+					type = "passive";
 				};
 
 				gpuss1_crit: gpuss1_crit {
@@ -3864,6 +3873,13 @@
 					type = "critical";
 				};
 			};
+
+			cooling-maps {
+				map0 {
+					trip = <&gpuss0_alert0>;
+					cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
 		};
 
 		aoss1-thermal {
-- 
2.7.4