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1* DT bindings for Renesas R-Car Gen3 Thermal Sensor driver
2
3On R-Car Gen3 SoCs, the thermal sensor controllers (TSC) control the thermal
4sensors (THS) which are the analog circuits for measuring temperature (Tj)
5inside the LSI.
6
7Required properties:
8- compatible : "renesas,<soctype>-thermal",
9 Examples with soctypes are:
10 - "renesas,r8a7795-thermal" (R-Car H3)
11 - "renesas,r8a7796-thermal" (R-Car M3-W)
12- reg : Address ranges of the thermal registers. Each sensor
13 needs one address range. Sorting must be done in
14 increasing order according to datasheet, i.e.
15 TSC1, TSC2, ...
16- clocks : Must contain a reference to the functional clock.
17- #thermal-sensor-cells : must be <1>.
18
19Optional properties:
20
21- interrupts : interrupts routed to the TSC (3 for H3 and M3-W)
22- power-domain : Must contain a reference to the power domain. This
23 property is mandatory if the thermal sensor instance
24 is part of a controllable power domain.
25
26Example:
27
28 tsc: thermal@e6198000 {
29 compatible = "renesas,r8a7795-thermal";
30 reg = <0 0xe6198000 0 0x68>,
31 <0 0xe61a0000 0 0x5c>,
32 <0 0xe61a8000 0 0x5c>;
33 interrupts = <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>,
34 <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>,
35 <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
36 clocks = <&cpg CPG_MOD 522>;
37 power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
38 #thermal-sensor-cells = <1>;
39 };
40
41 thermal-zones {
42 sensor_thermal1: sensor-thermal1 {
43 polling-delay-passive = <250>;
44 polling-delay = <1000>;
45 thermal-sensors = <&tsc 0>;
46
47 trips {
48 sensor1_crit: sensor1-crit {
49 temperature = <90000>;
50 hysteresis = <2000>;
51 type = "critical";
52 };
53 };
54 };
55 };