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mvebu: enable thermal zone polling for IEI Puzzle devices

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Marvell's thermal sensors do not support interrupts, so we need to
poll them. Reading temperature every second should be enough to
control the fan.
While at it, also make sure fan speed is reduced again if temperature
goes down.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This commit is contained in:
Daniel Golle 2024-03-17 15:55:09 +00:00
parent 7ac030876c
commit fc177695e0
1 changed files with 6 additions and 3 deletions
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9
target/linux/mvebu/files/arch/arm64/boot/dts/marvell/puzzle-thermal.dtsi
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@ -1,4 +1,7 @@
#define PUZZLE_FAN_THERMAL(_cname, _fan) \
polling-delay-passive = <500>; \
polling-delay = <1000>; \
\
trips { \
_cname##_active_high: cpu-active-high { \
temperature = <80000>; \
@ -28,14 +31,14 @@
}; \
cpu-active-med { \
trip = <&_cname##_active_med>; \
cooling-device = <_fan 2 THERMAL_NO_LIMIT>; \
cooling-device = <_fan 2 3>; \
}; \
cpu-active-low { \
trip = <&_cname##_active_low>; \
cooling-device = <_fan 1 THERMAL_NO_LIMIT>; \
cooling-device = <_fan 1 2>; \
}; \
cpu-active-idle { \
trip = <&_cname##_active_idle>; \
cooling-device = <_fan 0 THERMAL_NO_LIMIT>; \
cooling-device = <_fan 0 0>; \
}; \
}