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