xref: /freebsd/sys/contrib/device-tree/Bindings/thermal/imx-thermal.yaml (revision bdd1243df58e60e85101c09001d9812a789b6bc4) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/thermal/imx-thermal.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: NXP i.MX Thermal Binding
8
9maintainers:
10  - Shawn Guo <shawnguo@kernel.org>
11  - Anson Huang <Anson.Huang@nxp.com>
12
13properties:
14  compatible:
15    enum:
16      - fsl,imx6q-tempmon
17      - fsl,imx6sx-tempmon
18      - fsl,imx7d-tempmon
19
20  interrupts:
21    description: |
22      The interrupt output of the controller, i.MX6Q has IRQ_HIGH which
23      will be triggered when temperature is higher than high threshold,
24      i.MX6SX and i.MX7S/D have two more IRQs than i.MX6Q, one is IRQ_LOW
25      and the other is IRQ_PANIC, when temperature is lower than low
26      threshold, IRQ_LOW will be triggered, when temperature is higher
27      than panic threshold, IRQ_PANIC will be triggered, and system can
28      be configured to auto reboot by SRC module for IRQ_PANIC. IRQ_HIGH,
29      IRQ_LOW and IRQ_PANIC share same interrupt output of controller.
30    maxItems: 1
31
32  nvmem-cells:
33    items:
34      - description: Phandle to the calibration data provided by ocotp
35      - description: Phandle to the temperature grade provided by ocotp
36
37  nvmem-cell-names:
38    items:
39      - const: calib
40      - const: temp_grade
41
42  fsl,tempmon:
43    $ref: '/schemas/types.yaml#/definitions/phandle'
44    description: Phandle to anatop system controller node.
45
46  fsl,tempmon-data:
47    $ref: '/schemas/types.yaml#/definitions/phandle'
48    description: |
49      Deprecated property, phandle pointer to fuse controller that contains
50      TEMPMON calibration data, e.g. OCOTP on imx6q. The details about
51      calibration data can be found in SoC Reference Manual.
52    deprecated: true
53
54  clocks:
55    maxItems: 1
56
57required:
58  - compatible
59  - interrupts
60  - fsl,tempmon
61  - nvmem-cells
62  - nvmem-cell-names
63
64additionalProperties: false
65
66examples:
67  - |
68    #include <dt-bindings/clock/imx6sx-clock.h>
69    #include <dt-bindings/interrupt-controller/arm-gic.h>
70
71    efuse@21bc000 {
72         #address-cells = <1>;
73         #size-cells = <1>;
74         compatible = "fsl,imx6sx-ocotp", "syscon";
75         reg = <0x021bc000 0x4000>;
76         clocks = <&clks IMX6SX_CLK_OCOTP>;
77
78         tempmon_calib: calib@38 {
79             reg = <0x38 4>;
80         };
81
82         tempmon_temp_grade: temp-grade@20 {
83             reg = <0x20 4>;
84         };
85    };
86
87    anatop@20c8000 {
88        compatible = "fsl,imx6q-anatop", "syscon", "simple-mfd";
89        reg = <0x020c8000 0x1000>;
90        interrupts = <0 49 IRQ_TYPE_LEVEL_HIGH>,
91                     <0 54 IRQ_TYPE_LEVEL_HIGH>,
92                     <0 127 IRQ_TYPE_LEVEL_HIGH>;
93
94        tempmon {
95             compatible = "fsl,imx6sx-tempmon";
96             interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
97             fsl,tempmon = <&anatop>;
98             nvmem-cells = <&tempmon_calib>, <&tempmon_temp_grade>;
99             nvmem-cell-names = "calib", "temp_grade";
100             clocks = <&clks IMX6SX_CLK_PLL3_USB_OTG>;
101        };
102    };
103