Re: [PATCH v6 4/7] arm64: dts: meson: g12: Add minimal thermal zone
From: Amit Kucheria <hidden>
Date: 2019-09-30 09:44:20
Also in:
linux-amlogic, linux-devicetree, linux-pm, lkml
On Sat, Sep 28, 2019 at 12:14 AM Guillaume La Roque [off-list ref] wrote:
quoted hunk ↗ jump to hunk
Add minimal thermal zone for two temperature sensor One is located close to the DDR and the other one is located close to the PLLs (between the CPU and GPU) Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Tested-by: Christian Hewitt <redacted> Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Guillaume La Roque <glaroque@baylibre.com> --- .../boot/dts/amlogic/meson-g12-common.dtsi | 46 +++++++++++++++++++ 1 file changed, 46 insertions(+)diff --git a/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi index 0660d9ef6a86..f98171949fcb 100644 --- a/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi@@ -12,6 +12,7 @@ #include <dt-bindings/interrupt-controller/arm-gic.h> #include <dt-bindings/reset/amlogic,meson-axg-audio-arb.h> #include <dt-bindings/reset/amlogic,meson-g12a-reset.h> +#include <dt-bindings/thermal/thermal.h> / { interrupt-parent = <&gic>;@@ -94,6 +95,50 @@ #size-cells = <2>; ranges; + thermal-zones { + cpu_thermal: cpu-thermal { + polling-delay = <1000>; + polling-delay-passive = <100>; + thermal-sensors = <&cpu_temp>; + + trips { + cpu_passive: cpu-passive { + temperature = <85000>; /* millicelsius */ + hysteresis = <2000>; /* millicelsius */ + type = "passive"; + }; + + cpu_hot: cpu-hot { + temperature = <95000>; /* millicelsius */ + hysteresis = <2000>; /* millicelsius */ + type = "hot";
critical instead of hot? What is the SoC's critical shutdown temperature? Typically, you would use 'hot' at the beginning of at up trend e.g. at 75000, 'passive' to start throttling and 'critical' for shutdown temperature.
quoted hunk ↗ jump to hunk
+ }; + + }; + }; + + ddr_thermal: ddr-thermal { + polling-delay = <1000>; + polling-delay-passive = <100>; + thermal-sensors = <&ddr_temp>; + + trips { + ddr_passive: ddr-passive { + temperature = <85000>; /* millicelsius */ + hysteresis = <2000>; /* millicelsius */ + type = "passive"; + }; + }; + + cooling-maps { + map { + trip = <&ddr_passive>; + cooling-device = <&mali THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; + }; + }; + ethmac: ethernet@ff3f0000 { compatible = "amlogic,meson-axg-dwmac", "snps,dwmac-3.70a",@@ -2412,6 +2457,7 @@ assigned-clock-rates = <0>, /* Do Nothing */ <800000000>, <0>; /* Do Nothing */ + #cooling-cells = <2>; }; }; --2.17.1
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