[PATCH 06/11] ARM: dts: at91: sama7g5: add thermal zones node
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STALE1443d
LANDED
From: Claudiu Beznea <hidden>
Date: 2022-10-26 12:39:53
Also in:
linux-arm-kernel, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
Landed in mainline as 12045a7a0768 on 2022-11-01.
Add thermal zones node with its associated trips and cooling-maps. It uses CPUFreq as cooling device for temperatures in the interval [90, 100) degrees Celsius and describe the temperature of 100 degrees Celsius as critical temperature. System will be is shutting down when reaching critical temperature. Signed-off-by: Claudiu Beznea <redacted> --- arch/arm/boot/dts/sama7g5.dtsi | 42 ++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+)
diff --git a/arch/arm/boot/dts/sama7g5.dtsi b/arch/arm/boot/dts/sama7g5.dtsi
index 52829be04427..fb517f9aff30 100644
--- a/arch/arm/boot/dts/sama7g5.dtsi
+++ b/arch/arm/boot/dts/sama7g5.dtsi@@ -17,6 +17,7 @@ #include <dt-bindings/gpio/gpio.h> #include <dt-bindings/mfd/at91-usart.h> #include <dt-bindings/nvmem/microchip,sama7g5-otpc.h> +#include <dt-bindings/thermal/thermal.h> / { model = "Microchip SAMA7G5 family SoC";
@@ -36,6 +37,7 @@ cpu0: cpu@0 { clocks = <&pmc PMC_TYPE_CORE PMC_CPUPLL>; clock-names = "cpu"; operating-points-v2 = <&cpu_opp_table>; + #cooling-cells = <2>; /* min followed by max */ }; };
@@ -74,6 +76,46 @@ opp-1000000002 { }; }; + thermal-zones { + cpu_thermal: cpu-thermal { + polling-delay-passive = <1000>; + polling-delay = <5000>; + thermal-sensors = <&thermal_sensor>; + + trips { + cpu_normal: cpu-alert0 { + temperature = <90000>; + hysteresis = <0>; + type = "passive"; + }; + + cpu_hot: cpu-alert1 { + temperature = <95000>; + hysteresis = <0>; + type = "passive"; + }; + + cpu_critical: cpu-critical { + temperature = <100000>; + hysteresis = <0>; + type = "critical"; + }; + }; + + cooling-maps { + map0 { + trip = <&cpu_normal>; + cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + + map1 { + trip = <&cpu_hot>; + cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; + }; + }; + clocks { slow_xtal: slow_xtal { compatible = "fixed-clock";
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2.34.1