Finley Xiao
da2cde8541
Add support to change thermal governor to dummy, and the system monitor will manage cooling devices. This also fixes the following build errors when build as a module. ERROR: modpost: "__governor_thermal_table_end" [drivers/soc/rockchip/rockchip_system_monitor.ko] undefined! ERROR: modpost: "__governor_thermal_table" [drivers/soc/rockchip/rockchip_system_monitor.ko] undefined! Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com> Change-Id: Ia68b5bf2b6d94cb13fafc5cde74bc80b32dfac0a
36 lines
1.2 KiB
Plaintext
36 lines
1.2 KiB
Plaintext
Rockchip system monitor device tree bindings
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Required properties:
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- compatible: Should be one of the following.
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- "rockchip,system-monitor"
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Optional properties:
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- rockchip,video-4k-offline-cpus: A string containing cpus which will be killed
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when play 4k video.
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- rockchip,thermal-zone: A thermal zone node containing thermal sensor,
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it's used to get the current temperature.
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- rockchip,polling-delay: The maximum number of milliseconds to wait
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between polls.
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- rockchip,offline-cpu-temp: An integer indicating the trip temperature level.
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- rockchip,temp-hysteresis: A low hysteresis value on rockchip,offline-cpu-temp
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property (above).
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- rockchip,temp-offline-cpus: A string containing cpus which will be killed
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when temperature is high.
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- rockchip,thermal-governor-dummy: This property allows system monitor to
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change thermal governor to dummy, and the system
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monitor will manage cooling devices.
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Example:
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system-monitor {
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compatible = "rockchip,system-monitor";
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rockchip,thermal-zone = "soc-thermal";
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rockchip,polling-delay = <200>; /* milliseconds */
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rockchip,offline-cpu-temp = <110000>; /* millicelsius */
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rockchip,temp-offline-cpus = "2-3";
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rockchip,video-4k-offline-cpus = "2-3";
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};
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