From e1c3804a177418fe14d95f0c4ccba5ae66f73d82 Mon Sep 17 00:00:00 2001 From: Vasily Khoruzhick Date: Tue, 7 Jan 2020 20:20:16 -0800 Subject: arm64: dts: allwinner: a64: add cooling maps and thermal tripping points Add cooling maps and thermal tripping points to prevent CPU overheating when running at the highest frequency. Tripping points are taken from A33 dts since A64 user manual doesn't mention when we should start throttling. Signed-off-by: Vasily Khoruzhick Signed-off-by: Maxime Ripard --- arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 44 +++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) (limited to 'arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi') diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi index 72eedd39a2eb..862b47dc9dc9 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi @@ -53,6 +53,7 @@ next-level-cache = <&L2>; clocks = <&ccu 21>; clock-names = "cpu"; + #cooling-cells = <2>; }; cpu1: cpu@1 { @@ -63,6 +64,7 @@ next-level-cache = <&L2>; clocks = <&ccu 21>; clock-names = "cpu"; + #cooling-cells = <2>; }; cpu2: cpu@2 { @@ -73,6 +75,7 @@ next-level-cache = <&L2>; clocks = <&ccu 21>; clock-names = "cpu"; + #cooling-cells = <2>; }; cpu3: cpu@3 { @@ -83,6 +86,7 @@ next-level-cache = <&L2>; clocks = <&ccu 21>; clock-names = "cpu"; + #cooling-cells = <2>; }; L2: l2-cache { @@ -187,6 +191,46 @@ polling-delay-passive = <0>; polling-delay = <0>; thermal-sensors = <&ths 0>; + + cooling-maps { + map0 { + trip = <&cpu_alert0>; + 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>; + }; + map1 { + trip = <&cpu_alert1>; + 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>; + }; + }; + + 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"; + }; + }; }; gpu0_thermal: gpu0-thermal { -- cgit