of thermal
By describing the relationships of the modules among thermal zone, thermal sensor, trip point, and cooling device in the DTS file following a standard format, the of-thermal module will automatically register the DTS information and maintain the logic relations to reduce code complexity.
The following code block provides a thermal node of JH7110.
thermal-zones {
cpu-thermal {
polling-delay-passive = <250>;
polling-delay = <15000>;
thermal-sensors = <&sfctemp>;
trips {
cpu_alert0: cpu_alert0 {
/* milliCelsius */
temperature = <85000>;
hysteresis = <2000>;
type = "passive";
};
cpu_crit: cpu_crit {
/* milliCelsius */
temperature = <100000>;
hysteresis = <2000>;
type = "critical";
};
};
cooling-maps {
map0 {
trip = <&cpu_alert0>;
cooling-device =
<&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
<&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
<&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
<&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
};
};
};
};