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From: Quentin Schulz <quentin.schulz@free-electrons.com>
To: jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de,
	pmeerw@pmeerw.net, robh+dt@kernel.org, mark.rutland@arm.com,
	maxime.ripard@free-electrons.com, wens@csie.org,
	lee.jones@linaro.org, linux@armlinux.org.uk,
	stefan.mavrodiev@gmail.com
Cc: Quentin Schulz <quentin.schulz@free-electrons.com>,
	linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	thomas.petazzoni@free-electrons.com
Subject: [PATCH 7/7] ARM: dtsi: sun8i-a33: add CPU thermal throttling
Date: Tue, 20 Dec 2016 11:27:09 +0100	[thread overview]
Message-ID: <20161220102709.9504-8-quentin.schulz@free-electrons.com> (raw)
In-Reply-To: <20161220102709.9504-1-quentin.schulz@free-electrons.com>

This adds CPU thermal throttling for the Allwinner A33. It uses the
thermal sensor present in the SoC's GPADC.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
---
 arch/arm/boot/dts/sun8i-a33.dtsi | 47 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-a33.dtsi b/arch/arm/boot/dts/sun8i-a33.dtsi
index 1fcae81..735ebea 100644
--- a/arch/arm/boot/dts/sun8i-a33.dtsi
+++ b/arch/arm/boot/dts/sun8i-a33.dtsi
@@ -43,6 +43,7 @@
  */
 
 #include "sun8i-a23-a33.dtsi"
+#include <dt-bindings/thermal/thermal.h>
 
 / {
 	cpu0_opp_table: opp_table0 {
@@ -79,6 +80,9 @@
 			clocks = <&ccu CLK_CPUX>;
 			clock-names = "cpu";
 			operating-points-v2 = <&cpu0_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <3>;
+			#cooling-cells = <2>;
 		};
 
 		cpu@2 {
@@ -100,6 +104,49 @@
 		status = "disabled";
 	};
 
+	thermal-zones {
+		cpu_thermal {
+			/* milliseconds */
+			polling-delay-passive = <250>;
+			polling-delay = <1000>;
+			thermal-sensors = <&rtp>;
+
+			cooling-maps {
+				map0 {
+					trip = <&cpu_alert0>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+				map1 {
+					trip = <&cpu_alert1>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
+			trips {
+				cpu_alert0: cpu_alert0 {
+					/* milliCelsius */
+					temperature = <75000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				cpu_alert1: cpu_alert1 {
+					/* milliCelsius */
+					temperature = <90000>;
+					hysteresis = <2000>;
+					type = "hot";
+				};
+
+				cpu_crit: cpu_crit {
+					/* milliCelsius */
+					temperature = <110000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+			};
+		};
+	};
+
 	memory {
 		reg = <0x40000000 0x80000000>;
 	};
-- 
2.9.3

WARNING: multiple messages have this Message-ID (diff)
From: quentin.schulz@free-electrons.com (Quentin Schulz)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 7/7] ARM: dtsi: sun8i-a33: add CPU thermal throttling
Date: Tue, 20 Dec 2016 11:27:09 +0100	[thread overview]
Message-ID: <20161220102709.9504-8-quentin.schulz@free-electrons.com> (raw)
In-Reply-To: <20161220102709.9504-1-quentin.schulz@free-electrons.com>

This adds CPU thermal throttling for the Allwinner A33. It uses the
thermal sensor present in the SoC's GPADC.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
---
 arch/arm/boot/dts/sun8i-a33.dtsi | 47 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-a33.dtsi b/arch/arm/boot/dts/sun8i-a33.dtsi
index 1fcae81..735ebea 100644
--- a/arch/arm/boot/dts/sun8i-a33.dtsi
+++ b/arch/arm/boot/dts/sun8i-a33.dtsi
@@ -43,6 +43,7 @@
  */
 
 #include "sun8i-a23-a33.dtsi"
+#include <dt-bindings/thermal/thermal.h>
 
 / {
 	cpu0_opp_table: opp_table0 {
@@ -79,6 +80,9 @@
 			clocks = <&ccu CLK_CPUX>;
 			clock-names = "cpu";
 			operating-points-v2 = <&cpu0_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <3>;
+			#cooling-cells = <2>;
 		};
 
 		cpu at 2 {
@@ -100,6 +104,49 @@
 		status = "disabled";
 	};
 
+	thermal-zones {
+		cpu_thermal {
+			/* milliseconds */
+			polling-delay-passive = <250>;
+			polling-delay = <1000>;
+			thermal-sensors = <&rtp>;
+
+			cooling-maps {
+				map0 {
+					trip = <&cpu_alert0>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+				map1 {
+					trip = <&cpu_alert1>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
+			trips {
+				cpu_alert0: cpu_alert0 {
+					/* milliCelsius */
+					temperature = <75000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				cpu_alert1: cpu_alert1 {
+					/* milliCelsius */
+					temperature = <90000>;
+					hysteresis = <2000>;
+					type = "hot";
+				};
+
+				cpu_crit: cpu_crit {
+					/* milliCelsius */
+					temperature = <110000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+			};
+		};
+	};
+
 	memory {
 		reg = <0x40000000 0x80000000>;
 	};
-- 
2.9.3

  parent reply	other threads:[~2016-12-20 10:29 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-20 10:27 [PATCH 0/7] add CPU thermal throttling to Allwinner A33 SoC Quentin Schulz
2016-12-20 10:27 ` Quentin Schulz
2016-12-20 10:27 ` Quentin Schulz
2016-12-20 10:27 ` [PATCH 1/7] Documentation: DT: bindings: iio: adc: add documentation for Allwinner SoCs' GPADC driver Quentin Schulz
2016-12-20 10:27   ` Quentin Schulz
2016-12-20 10:27   ` Quentin Schulz
2016-12-20 14:25   ` Maxime Ripard
2016-12-20 14:25     ` Maxime Ripard
2016-12-20 14:25     ` Maxime Ripard
2016-12-20 15:43     ` Quentin Schulz
2016-12-20 15:43       ` Quentin Schulz
2016-12-20 15:43       ` Quentin Schulz
2016-12-21 12:20       ` Maxime Ripard
2016-12-21 12:20         ` Maxime Ripard
2016-12-21 12:20         ` Maxime Ripard
2016-12-20 10:27 ` [PATCH 2/7] Documentation: DT: bindings: mfd: add documentation for Allwinner SoCs' GPADC MFD driver Quentin Schulz
2016-12-20 10:27   ` Quentin Schulz
2016-12-20 10:27   ` Quentin Schulz
2016-12-20 14:26   ` Maxime Ripard
2016-12-20 14:26     ` Maxime Ripard
2016-12-20 14:26     ` Maxime Ripard
2016-12-20 10:27 ` [PATCH 3/7] iio: adc: sun4i-gpadc-iio: add support for A33 thermal sensor Quentin Schulz
2016-12-20 10:27   ` Quentin Schulz
2016-12-20 10:27   ` Quentin Schulz
2016-12-20 14:44   ` Maxime Ripard
2016-12-20 14:44     ` Maxime Ripard
2016-12-20 14:44     ` Maxime Ripard
2016-12-20 15:20     ` Quentin Schulz
2016-12-20 15:20       ` Quentin Schulz
2016-12-20 15:20       ` Quentin Schulz
2016-12-21  9:09       ` Maxime Ripard
2016-12-21  9:09         ` Maxime Ripard
2016-12-21  9:09         ` Maxime Ripard
2016-12-20 10:27 ` [PATCH 4/7] ARM: dts: sun8i-a33-sinlinx-sina33: add cpu-supply Quentin Schulz
2016-12-20 10:27   ` Quentin Schulz
2016-12-20 10:27   ` Quentin Schulz
2016-12-20 10:27 ` [PATCH 5/7] ARM: dts: sun8i-a33-olinuxino: " Quentin Schulz
2016-12-20 10:27   ` Quentin Schulz
2016-12-20 10:27 ` [PATCH 6/7] ARM: dtsi: sun8i-a33: add A33 thermal sensor Quentin Schulz
2016-12-20 10:27   ` Quentin Schulz
2016-12-20 10:27 ` Quentin Schulz [this message]
2016-12-20 10:27   ` [PATCH 7/7] ARM: dtsi: sun8i-a33: add CPU thermal throttling Quentin Schulz

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