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From: qianfanguijin@163.com
To: linux-sunxi@lists.linux.dev
Cc: Rob Herring <robh+dt@kernel.org>,
	Maxime Ripard <mripard@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	Viresh Kumar <viresh.kumar@linaro.org>,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
	qianfan Zhao <qianfanguijin@163.com>
Subject: [PATCH v5 3/3] ARM: dts: sun8i-r40: Add thermal trip points/cooling maps
Date: Tue, 17 May 2022 09:36:07 +0800	[thread overview]
Message-ID: <20220517013607.2252-4-qianfanguijin@163.com> (raw)
In-Reply-To: <20220517013607.2252-1-qianfanguijin@163.com>

From: qianfan Zhao <qianfanguijin@163.com>

For the trip points, I used values from the BSP code.

The critical trip point value is 30°C above the maximum recommended
ambient temperature (85°C) for the SoC from the datasheet, so there's
some headroom even at such a high ambient temperature.

Signed-off-by: qianfan Zhao <qianfanguijin@163.com>
---
 arch/arm/boot/dts/sun8i-r40.dtsi | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-r40.dtsi b/arch/arm/boot/dts/sun8i-r40.dtsi
index ae2a5ebd9924..b43f3f72a915 100644
--- a/arch/arm/boot/dts/sun8i-r40.dtsi
+++ b/arch/arm/boot/dts/sun8i-r40.dtsi
@@ -86,6 +86,7 @@ cpu0: cpu@0 {
 			reg = <0>;
 			clocks = <&ccu CLK_CPU>;
 			clock-names = "cpu";
+			#cooling-cells = <2>;
 		};
 
 		cpu1: cpu@1 {
@@ -94,6 +95,7 @@ cpu1: cpu@1 {
 			reg = <1>;
 			clocks = <&ccu CLK_CPU>;
 			clock-names = "cpu";
+			#cooling-cells = <2>;
 		};
 
 		cpu2: cpu@2 {
@@ -102,6 +104,7 @@ cpu2: cpu@2 {
 			reg = <2>;
 			clocks = <&ccu CLK_CPU>;
 			clock-names = "cpu";
+			#cooling-cells = <2>;
 		};
 
 		cpu3: cpu@3 {
@@ -110,6 +113,7 @@ cpu3: cpu@3 {
 			reg = <3>;
 			clocks = <&ccu CLK_CPU>;
 			clock-names = "cpu";
+			#cooling-cells = <2>;
 		};
 	};
 
@@ -125,6 +129,30 @@ cpu_thermal: cpu0-thermal {
 			polling-delay-passive = <0>;
 			polling-delay = <0>;
 			thermal-sensors = <&ths 0>;
+
+			trips {
+				cpu_hot_trip: cpu-hot {
+					temperature = <80000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				cpu_very_hot_trip: cpu-very-hot {
+					temperature = <115000>;
+					hysteresis = <0>;
+					type = "critical";
+				};
+			};
+
+			cooling-maps {
+				cpu-hot-limit {
+					trip = <&cpu_hot_trip>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+							 <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+							 <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+							 <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
 		};
 
 		gpu_thermal: gpu-thermal {
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: qianfanguijin@163.com
To: linux-sunxi@lists.linux.dev
Cc: Rob Herring <robh+dt@kernel.org>,
	Maxime Ripard <mripard@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	Viresh Kumar <viresh.kumar@linaro.org>,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
	qianfan Zhao <qianfanguijin@163.com>
Subject: [PATCH v5 3/3] ARM: dts: sun8i-r40: Add thermal trip points/cooling maps
Date: Tue, 17 May 2022 09:36:07 +0800	[thread overview]
Message-ID: <20220517013607.2252-4-qianfanguijin@163.com> (raw)
In-Reply-To: <20220517013607.2252-1-qianfanguijin@163.com>

From: qianfan Zhao <qianfanguijin@163.com>

For the trip points, I used values from the BSP code.

The critical trip point value is 30°C above the maximum recommended
ambient temperature (85°C) for the SoC from the datasheet, so there's
some headroom even at such a high ambient temperature.

Signed-off-by: qianfan Zhao <qianfanguijin@163.com>
---
 arch/arm/boot/dts/sun8i-r40.dtsi | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-r40.dtsi b/arch/arm/boot/dts/sun8i-r40.dtsi
index ae2a5ebd9924..b43f3f72a915 100644
--- a/arch/arm/boot/dts/sun8i-r40.dtsi
+++ b/arch/arm/boot/dts/sun8i-r40.dtsi
@@ -86,6 +86,7 @@ cpu0: cpu@0 {
 			reg = <0>;
 			clocks = <&ccu CLK_CPU>;
 			clock-names = "cpu";
+			#cooling-cells = <2>;
 		};
 
 		cpu1: cpu@1 {
@@ -94,6 +95,7 @@ cpu1: cpu@1 {
 			reg = <1>;
 			clocks = <&ccu CLK_CPU>;
 			clock-names = "cpu";
+			#cooling-cells = <2>;
 		};
 
 		cpu2: cpu@2 {
@@ -102,6 +104,7 @@ cpu2: cpu@2 {
 			reg = <2>;
 			clocks = <&ccu CLK_CPU>;
 			clock-names = "cpu";
+			#cooling-cells = <2>;
 		};
 
 		cpu3: cpu@3 {
@@ -110,6 +113,7 @@ cpu3: cpu@3 {
 			reg = <3>;
 			clocks = <&ccu CLK_CPU>;
 			clock-names = "cpu";
+			#cooling-cells = <2>;
 		};
 	};
 
@@ -125,6 +129,30 @@ cpu_thermal: cpu0-thermal {
 			polling-delay-passive = <0>;
 			polling-delay = <0>;
 			thermal-sensors = <&ths 0>;
+
+			trips {
+				cpu_hot_trip: cpu-hot {
+					temperature = <80000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				cpu_very_hot_trip: cpu-very-hot {
+					temperature = <115000>;
+					hysteresis = <0>;
+					type = "critical";
+				};
+			};
+
+			cooling-maps {
+				cpu-hot-limit {
+					trip = <&cpu_hot_trip>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+							 <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+							 <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+							 <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
 		};
 
 		gpu_thermal: gpu-thermal {
-- 
2.25.1


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linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2022-05-17  1:53 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-17  1:36 [PATCH v5 0/3] ARM: sun8i-r40: CPU improve qianfanguijin
2022-05-17  1:36 ` qianfanguijin
2022-05-17  1:36 ` [PATCH v5 1/3] ARM: dts: sun8i-r40: Add "cpu-supply" node for sun8i-r40 based board qianfanguijin
2022-05-17  1:36   ` qianfanguijin
2022-07-05  4:45   ` Samuel Holland
2022-07-05  4:45     ` Samuel Holland
2022-05-17  1:36 ` [PATCH v5 2/3] ARM: dts: sun8i-r40: add opp table for cpu qianfanguijin
2022-05-17  1:36   ` qianfanguijin
2022-07-05  4:57   ` Samuel Holland
2022-07-05  4:57     ` Samuel Holland
2022-05-17  1:36 ` qianfanguijin [this message]
2022-05-17  1:36   ` [PATCH v5 3/3] ARM: dts: sun8i-r40: Add thermal trip points/cooling maps qianfanguijin
2022-07-05  5:07   ` Samuel Holland
2022-07-05  5:07     ` Samuel Holland
2022-07-05 19:41 ` [PATCH v5 0/3] ARM: sun8i-r40: CPU improve Jernej Škrabec
2022-07-05 19:41   ` Jernej Škrabec

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