linux-kernel - [v7,2/3] arm64: dts: mt8183: Configure CPU cooling

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Date:   Tue, 16 Mar 2021 15:01:43 +0800
From:   Michael Kao <michael.kao@...iatek.com>
To:     <michael.kao@...iatek.com>, <fan.chen@...iatek.com>,
        Zhang Rui <rui.zhang@...el.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        <linux-pm@...r.kernel.org>, <srv_heupstream@...iatek.com>
CC:     Eduardo Valentin <edubezval@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <hsinyi@...omium.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        Matthias Kaehlcke <mka@...omium.org>
Subject: [v7,2/3] arm64: dts: mt8183: Configure CPU cooling

From: Matthias Kaehlcke <mka@...omium.org>

Add two passive trip points at 68°C and 80°C for the CPU temperature.

Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
Signed-off-by: Michael Kao <michael.kao@...iatek.com>
Tested-by: Hsin-Yi Wang <hsinyi@...omium.org>
---
 arch/arm64/boot/dts/mediatek/mt8183.dtsi | 56 ++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
index d3550af06408..1ad0a1d55d53 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
@@ -13,6 +13,7 @@
 #include <dt-bindings/power/mt8183-power.h>
 #include <dt-bindings/reset-controller/mt8183-resets.h>
 #include <dt-bindings/phy/phy.h>
+#include <dt-bindings/thermal/thermal.h>
 #include "mt8183-pinfunc.h"
 
 / {
@@ -678,6 +679,61 @@
 				polling-delay = <500>;
 				thermal-sensors = <&thermal 0>;
 				sustainable-power = <5000>;
+
+				trips {
+					threshold: trip-point@0 {
+						temperature = <68000>;
+						hysteresis = <2000>;
+						type = "passive";
+					};
+
+					target: trip-point@1 {
+						temperature = <80000>;
+						hysteresis = <2000>;
+						type = "passive";
+					};
+
+					cpu_crit: cpu-crit {
+						temperature = <115000>;
+						hysteresis = <2000>;
+						type = "critical";
+					};
+				};
+
+				cooling-maps {
+					map0 {
+						trip = <&target>;
+						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>;
+						contribution = <3072>;
+					};
+					map1 {
+						trip = <&target>;
+						cooling-device = <&cpu4
+							THERMAL_NO_LIMIT
+							THERMAL_NO_LIMIT>,
+								 <&cpu5
+							THERMAL_NO_LIMIT
+							THERMAL_NO_LIMIT>,
+								 <&cpu6
+							THERMAL_NO_LIMIT
+							THERMAL_NO_LIMIT>,
+								 <&cpu7
+							THERMAL_NO_LIMIT
+							THERMAL_NO_LIMIT>;
+						contribution = <1024>;
+					};
+				};
 			};
 
 			/* The tzts1 ~ tzts6 don't need to polling */
-- 
2.18.0