71 lines
1.6 KiB
Plaintext
71 lines
1.6 KiB
Plaintext
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Thermal driver for MAX77620 Power management IC from Maxim Semiconductor.
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Maxim Semiconductor MAX77620 supports alarm interrupts when its
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die temperature crosses 120C and 140C. These threshold temperatures
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are not configurable. Device does not provide the real temperature
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of die other than just indicating whether temperature is above or
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below threshold level.
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Required properties:
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-------------------
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#thermal-sensor-cells: For more details, please refer to
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<devicetree/bindings/thermal/thermal-sensor.yaml>
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The value must be 0.
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For more details, please refer generic thermal DT binding document
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<devicetree/bindings/thermal/thermal*.yaml>.
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Please refer <devicetree/bindings/mfd/max77620.txt> for mfd DT binding
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document for the MAX77620.
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Example:
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--------
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#include <dt-bindings/mfd/max77620.h>
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#include <dt-bindings/thermal/thermal.h>
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...
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i2c@7000d000 {
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spmic: max77620@3c {
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compatible = "maxim,max77620";
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:::::
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#thermal-sensor-cells = <0>;
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:::
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};
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};
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cool_dev: cool-dev {
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compatible = "cooling-dev";
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#cooling-cells = <2>;
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};
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thermal-zones {
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PMIC-Die {
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polling-delay = <0>;
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polling-delay-passive = <0>;
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thermal-sensors = <&spmic>;
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trips {
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pmic_die_warn_temp_thresh: hot-die {
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temperature = <120000>;
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type = "hot";
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hysteresis = <0>;
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};
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pmic_die_cirt_temp_thresh: cirtical-die {
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temperature = <140000>;
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type = "critical";
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hysteresis = <0>;
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};
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};
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cooling-maps {
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map0 {
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trip = <&pmic_die_warn_temp_thresh>;
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cooling-device = <&cool_dev THERMAL_NO_LIMIT
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THERMAL_NO_LIMIT>;
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contribution = <100>;
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};
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};
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};
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};
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