From 6914945e888f1206df560ff36375e7257ce38970 Mon Sep 17 00:00:00 2001 From: Ondrej Jirman Date: Mon, 14 May 2018 01:16:06 +0200 Subject: [PATCH 14/82] ARM: dts: sunxi-h3-h5: Add thermal zone trip points This enables passive cooling by downregulating CPU voltage/frequency. Signed-off-by: Ondrej Jirman --- arch/arm/boot/dts/sun8i-h3.dtsi | 4 +++- arch/arm/boot/dts/sunxi-h3-h5.dtsi | 21 ++++++++++++++++++++ arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi | 3 +++ 3 files changed, 27 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/sun8i-h3.dtsi b/arch/arm/boot/dts/sun8i-h3.dtsi index 261ca0356358..af76a6d250b3 100644 --- a/arch/arm/boot/dts/sun8i-h3.dtsi +++ b/arch/arm/boot/dts/sun8i-h3.dtsi @@ -54,8 +54,10 @@ clocks = <&ccu CLK_CPUX>; clock-names = "cpu"; operating-points-v2 = <&cpu0_opp_table>; - #cooling-cells = <2>; clock-frequency = <1200000000>; + #cooling-cells = <2>; + cooling-min-level = <0>; + cooling-max-level = <15>; }; cpu@1 { diff --git a/arch/arm/boot/dts/sunxi-h3-h5.dtsi b/arch/arm/boot/dts/sunxi-h3-h5.dtsi index f47c22b622f9..3b8b2234ab4d 100644 --- a/arch/arm/boot/dts/sunxi-h3-h5.dtsi +++ b/arch/arm/boot/dts/sunxi-h3-h5.dtsi @@ -47,6 +47,7 @@ #include #include #include +#include / { interrupt-parent = <&gic>; @@ -975,6 +976,26 @@ polling-delay-passive = <330>; polling-delay = <1000>; thermal-sensors = <&ths 0>; + + trips { + cpu_hot_trip: cpu-warm { + temperature = <65000>; + hysteresis = <2000>; + type = "passive"; + }; + cpu_very_hot_trip: cpu-very-hot { + temperature = <90000>; + hysteresis = <2000>; + type = "critical"; + }; + }; + + cooling-maps { + cpu-warm-limit { + trip = <&cpu_hot_trip>; + cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; }; }; }; diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi index 4452ab873dec..60fc84a1fb44 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi @@ -53,6 +53,9 @@ reg = <0>; enable-method = "psci"; clock-frequency = <1200000000>; + #cooling-cells = <2>; + cooling-min-level = <0>; + cooling-max-level = <15>; }; cpu@1 { -- 2.20.1