1* Temperature Sensor ADC (TSADC) on rockchip SoCs
2
3Required properties:
4- compatible : "rockchip,rk3288-tsadc"
5- reg : physical base address of the controller and length of memory mapped
6	region.
7- interrupts : The interrupt number to the cpu. The interrupt specifier format
8	       depends on the interrupt controller.
9- clocks : Must contain an entry for each entry in clock-names.
10- clock-names : Shall be "tsadc" for the converter-clock, and "apb_pclk" for
11		the peripheral clock.
12- resets : Must contain an entry for each entry in reset-names.
13	   See ../reset/reset.txt for details.
14- reset-names : Must include the name "tsadc-apb".
15- #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description.
16- rockchip,hw-tshut-temp : The hardware-controlled shutdown temperature value.
17- rockchip,hw-tshut-mode : The hardware-controlled shutdown mode 0:CRU 1:GPIO.
18- rockchip,hw-tshut-polarity : The hardware-controlled active polarity 0:LOW
19			       1:HIGH.
20
21Exiample:
22tsadc: tsadc@ff280000 {
23	compatible = "rockchip,rk3288-tsadc";
24	reg = <0xff280000 0x100>;
25	interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
26	clocks = <&cru SCLK_TSADC>, <&cru PCLK_TSADC>;
27	clock-names = "tsadc", "apb_pclk";
28	resets = <&cru SRST_TSADC>;
29	reset-names = "tsadc-apb";
30	pinctrl-names = "default";
31	pinctrl-0 = <&otp_out>;
32	#thermal-sensor-cells = <1>;
33	rockchip,hw-tshut-temp = <95000>;
34	rockchip,hw-tshut-mode = <0>;
35	rockchip,hw-tshut-polarity = <0>;
36};
37
38Example: referring to thermal sensors:
39thermal-zones {
40	cpu_thermal: cpu_thermal {
41		polling-delay-passive = <1000>; /* milliseconds */
42		polling-delay = <5000>; /* milliseconds */
43
44		/* sensor	ID */
45		thermal-sensors = <&tsadc	1>;
46
47		trips {
48			cpu_alert0: cpu_alert {
49				temperature = <70000>; /* millicelsius */
50				hysteresis = <2000>; /* millicelsius */
51				type = "passive";
52			};
53			cpu_crit: cpu_crit {
54				temperature = <90000>; /* millicelsius */
55				hysteresis = <2000>; /* millicelsius */
56				type = "critical";
57			};
58		};
59
60		cooling-maps {
61			map0 {
62				trip = <&cpu_alert0>;
63				cooling-device =
64				    <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
65			};
66		};
67	};
68};
69