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1# SPDX-License-Identifier: (GPL-2.0 OR MIT)
2# Copyright 2019 Linaro Ltd.
3%YAML 1.2
4---
5$id: http://devicetree.org/schemas/thermal/qcom-tsens.yaml#
6$schema: http://devicetree.org/meta-schemas/core.yaml#
7
8title: QCOM SoC Temperature Sensor (TSENS)
9
10maintainers:
11 - Amit Kucheria <amit.kucheria@linaro.org>
12
13description: |
14 QCOM SoCs have TSENS IP to allow temperature measurement. There are currently
15 three distinct major versions of the IP that is supported by a single driver.
16 The IP versions are named v0.1, v1 and v2 in the driver, where v0.1 captures
17 everything before v1 when there was no versioning information.
18
19properties:
20 compatible:
21 oneOf:
22 - description: v0.1 of TSENS
23 items:
24 - enum:
25 - qcom,msm8916-tsens
26 - qcom,msm8974-tsens
27 - const: qcom,tsens-v0_1
28
29 - description: v1 of TSENS
30 items:
31 - enum:
32 - qcom,msm8976-tsens
33 - qcom,qcs404-tsens
34 - const: qcom,tsens-v1
35
36 - description: v2 of TSENS
37 items:
38 - enum:
39 - qcom,msm8996-tsens
40 - qcom,msm8998-tsens
41 - qcom,sc7180-tsens
42 - qcom,sdm845-tsens
43 - const: qcom,tsens-v2
44
45 reg:
46 items:
47 - description: TM registers
48 - description: SROT registers
49
50 interrupts:
51 minItems: 1
52 items:
53 - description: Combined interrupt if upper or lower threshold crossed
54 - description: Interrupt if critical threshold crossed
55
56 interrupt-names:
57 minItems: 1
58 items:
59 - const: uplow
60 - const: critical
61
62 nvmem-cells:
63 minItems: 1
64 maxItems: 2
65 description:
66 Reference to an nvmem node for the calibration data
67
68 nvmem-cell-names:
69 minItems: 1
70 maxItems: 2
71 items:
72 - const: calib
73 - const: calib_sel
74
75 "#qcom,sensors":
76 allOf:
77 - $ref: /schemas/types.yaml#/definitions/uint32
78 - minimum: 1
79 - maximum: 16
80 description:
81 Number of sensors enabled on this platform
82
83 "#thermal-sensor-cells":
84 const: 1
85 description:
86 Number of cells required to uniquely identify the thermal sensors. Since
87 we have multiple sensors this is set to 1
88
89allOf:
90 - if:
91 properties:
92 compatible:
93 contains:
94 enum:
95 - qcom,msm8916-tsens
96 - qcom,msm8974-tsens
97 - qcom,msm8976-tsens
98 - qcom,qcs404-tsens
99 - qcom,tsens-v0_1
100 - qcom,tsens-v1
101 then:
102 properties:
103 interrupts:
104 maxItems: 1
105 interrupt-names:
106 maxItems: 1
107
108 else:
109 properties:
110 interrupts:
111 minItems: 2
112 interrupt-names:
113 minItems: 2
114
115required:
116 - compatible
117 - reg
118 - "#qcom,sensors"
119 - interrupts
120 - interrupt-names
121 - "#thermal-sensor-cells"
122
123additionalProperties: false
124
125examples:
126 - |
127 #include <dt-bindings/interrupt-controller/arm-gic.h>
128 // Example 1 (legacy: for pre v1 IP):
129 tsens1: thermal-sensor@900000 {
130 compatible = "qcom,msm8916-tsens", "qcom,tsens-v0_1";
131 reg = <0x4a9000 0x1000>, /* TM */
132 <0x4a8000 0x1000>; /* SROT */
133
134 nvmem-cells = <&tsens_caldata>, <&tsens_calsel>;
135 nvmem-cell-names = "calib", "calib_sel";
136
137 interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
138 interrupt-names = "uplow";
139
140 #qcom,sensors = <5>;
141 #thermal-sensor-cells = <1>;
142 };
143
144 - |
145 #include <dt-bindings/interrupt-controller/arm-gic.h>
146 // Example 2 (for any platform containing v1 of the TSENS IP):
147 tsens2: thermal-sensor@4a9000 {
148 compatible = "qcom,qcs404-tsens", "qcom,tsens-v1";
149 reg = <0x004a9000 0x1000>, /* TM */
150 <0x004a8000 0x1000>; /* SROT */
151
152 nvmem-cells = <&tsens_caldata>;
153 nvmem-cell-names = "calib";
154
155 interrupts = <GIC_SPI 506 IRQ_TYPE_LEVEL_HIGH>;
156 interrupt-names = "uplow";
157
158 #qcom,sensors = <10>;
159 #thermal-sensor-cells = <1>;
160 };
161
162 - |
163 #include <dt-bindings/interrupt-controller/arm-gic.h>
164 // Example 3 (for any platform containing v2 of the TSENS IP):
165 tsens3: thermal-sensor@c263000 {
166 compatible = "qcom,sdm845-tsens", "qcom,tsens-v2";
167 reg = <0xc263000 0x1ff>,
168 <0xc222000 0x1ff>;
169
170 interrupts = <GIC_SPI 506 IRQ_TYPE_LEVEL_HIGH>,
171 <GIC_SPI 508 IRQ_TYPE_LEVEL_HIGH>;
172 interrupt-names = "uplow", "critical";
173
174 #qcom,sensors = <13>;
175 #thermal-sensor-cells = <1>;
176 };
177...