max77620_thermal.txt

 1Thermal driver for MAX77620 Power management IC from Maxim Semiconductor.
 2
 3Maxim Semiconductor MAX77620 supports alarm interrupts when its
 4die temperature crosses 120C and 140C. These threshold temperatures
 5are not configurable. Device does not provide the real temperature
 6of die other than just indicating whether temperature is above or
 7below threshold level.
 8
 9Required properties:
10-------------------
11#thermal-sensor-cells:	For more details, please refer to
12			<devicetree/bindings/thermal/thermal-sensor.yaml>
13			The value must be 0.
14
15For more details, please refer generic thermal DT binding document
16<devicetree/bindings/thermal/thermal*.yaml>.
17
18Please refer <devicetree/bindings/mfd/max77620.txt> for mfd DT binding
19document for the MAX77620.
20
21Example:
22--------
23#include <dt-bindings/mfd/max77620.h>
24#include <dt-bindings/thermal/thermal.h>
25...
26
27i2c@7000d000 {
28	spmic: max77620@3c {
29		compatible = "maxim,max77620";
30		:::::
31		#thermal-sensor-cells = <0>;
32		:::
33	};
34};
35
36cool_dev: cool-dev {
37	compatible = "cooling-dev";
38	#cooling-cells = <2>;
39};
40
41thermal-zones {
42	PMIC-Die {
43		polling-delay = <0>;
44		polling-delay-passive = <0>;
45		thermal-sensors = <&spmic>;
46
47		trips {
48			pmic_die_warn_temp_thresh: hot-die {
49				temperature = <120000>;
50				type = "hot";
51				hysteresis = <0>;
52			};
53
54			pmic_die_cirt_temp_thresh: cirtical-die {
55				temperature = <140000>;
56				type = "critical";
57				hysteresis = <0>;
58			};
59		};
60
61		cooling-maps {
62			map0 {
63				trip = <&pmic_die_warn_temp_thresh>;
64				cooling-device = <&cool_dev THERMAL_NO_LIMIT
65						  THERMAL_NO_LIMIT>;
66				contribution = <100>;
67			};
68		};
69	};
70};