Lines Matching refs:cooling
5 $id: http://devicetree.org/schemas/thermal/thermal-cooling-devices.yaml#
8 title: Thermal cooling device
15 and the software abstraction of cooling devices and thermal zones required to
21 - cooling-device: device used to dissipate heat either passively or actively
25 This binding describes the cooling devices.
28 - Passive cooling: by means of regulating device performance. A typical
29 passive cooling mechanism is a CPU that has dynamic voltage and frequency
30 scaling (DVFS), and uses lower frequencies as cooling states.
31 - Active cooling: by means of activating devices in order to remove the
34 Any cooling device has a range of cooling states (i.e. different levels of
35 heat dissipation). They also have a way to determine the state of cooling in
36 which the device is. For example, a fan's cooling states correspond to the
39 precise set of cooling states associated with a device should be defined in
45 "#cooling-cells":
47 Must be 2, in order to specify minimum and maximum cooling state used in
48 the cooling-maps reference. The first cell is the minimum cooling state
49 and the second cell is the maximum cooling state requested.
59 // Example 1: Cpufreq cooling device on CPU0
75 #cooling-cells = <2>;
111 cooling-maps {
115 cooling-device = <&CPU0 5 5>;