David Venhoff
cfcea9ee67
Based off b80915eb99
and compacted into a single commit so that it will fit on the uni git server
71 lines
1.6 KiB
Plaintext
71 lines
1.6 KiB
Plaintext
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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