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
prev parent reply other threads:[~2016-12-20 10:29 UTC|newest]
Thread overview: 15+ 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 ` [PATCH 1/7] Documentation: DT: bindings: iio: adc: add documentation for Allwinner SoCs' GPADC driver Quentin Schulz
2016-12-20 14:25 ` Maxime Ripard
2016-12-20 15:43 ` Quentin Schulz
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 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 14:44 ` Maxime Ripard
2016-12-20 15:20 ` Quentin Schulz
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 ` [PATCH 5/7] ARM: dts: sun8i-a33-olinuxino: " 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 [this message]
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