65 lines
1.8 KiB
Text
65 lines
1.8 KiB
Text
QTI CPU pause cooling devices.
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The CPU pause cooling device will be used for isolating a CPU on a thermal
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condition. This cooling device driver can register one cooling device per
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signle or multiple CPUs, which can be used by thermal zone to mitigate.
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Each child node will represent a cooling device and the child node should
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point to the CPU mask, which will be mitigated by that cooling device instance.
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Properties:
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- compatible:
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Usage: required
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Value type: <string>
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Definition: should be "qcom,thermal-pause"
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Cooling device node:
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- qcom,cpus:
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Usage: required
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Value type: <list of CPU Phandles>
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Definition: List of Phandles to the CPUs that should be mitigated as
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a part of this cooling device.
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-#cooling-cells:
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Usage: optional
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Value type: <integer>
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Definition: Must be 2. Needed for of_thermal as cooling device
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identifier. Please refer to
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<devicetree/bindings/thermal/thermal.txt> for more
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details. This is not needed for devicetree based
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cooling devices.
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- qcom,cdev-alias:
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Usage: optional
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Value type: <string>
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Definition: Alias name for the cooling device. When specified, this
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name will be used to create a cooling device instead
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of using the default name based on CPU mask.
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Example:
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qcom,thermal-pause {
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compatible = "qcom,thermal-pause";
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/* pause a single cpu, cpu 0 */
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thermal_pause-01: thermal-pause-01 {
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qcom,cpus = <&CPU0>;
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qcom,cdev-alias = "pause_cpu0";
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};
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/* pause a group of cpus, cpus 0-3 */
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thermal_pause-0F: thermal-pause-0F {
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qcom,cpus = <&CPU0 &CPU1 &CPU2 &CPU3>;
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#cooling-cells = <2>;
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};
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/* pause a group of cpus, cpus 6-7 */
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thermal_pause-C0: thermal-pause-C0 {
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qcom,cpus = <&CPU4 &CPU5 &CPU6 &CPU7>;
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#cooling-cells = <2>;
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};
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/* pause a single cpu, cpu 7 */
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thermal_pause-80: thermal-pause-80 {
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qcom,cpus = <&CPU7>;
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#cooling-cells = <2>;
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};
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};
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