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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 <amitk@kernel.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,msm8939-tsens
27 - qcom,msm8974-tsens
28 - const: qcom,tsens-v0_1
29
30 - description: v1 of TSENS
31 items:
32 - enum:
33 - qcom,msm8976-tsens
34 - qcom,qcs404-tsens
35 - const: qcom,tsens-v1
36
37 - description: v2 of TSENS
38 items:
39 - enum:
40 - qcom,msm8996-tsens
41 - qcom,msm8998-tsens
42 - qcom,sc7180-tsens
43 - qcom,sdm845-tsens
44 - qcom,sm8150-tsens
45 - qcom,sm8250-tsens
46 - const: qcom,tsens-v2
47
48 reg:
49 items:
50 - description: TM registers
51 - description: SROT registers
52
53 interrupts:
54 minItems: 1
55 items:
56 - description: Combined interrupt if upper or lower threshold crossed
57 - description: Interrupt if critical threshold crossed
58
59 interrupt-names:
60 minItems: 1
61 items:
62 - const: uplow
63 - const: critical
64
65 nvmem-cells:
66 minItems: 1
67 maxItems: 2
68 description:
69 Reference to an nvmem node for the calibration data
70
71 nvmem-cell-names:
72 minItems: 1
73 maxItems: 2
74 items:
75 - const: calib
76 - const: calib_sel
77
78 "#qcom,sensors":
79 description:
80 Number of sensors enabled on this platform
81 $ref: /schemas/types.yaml#/definitions/uint32
82 minimum: 1
83 maximum: 16
84
85 "#thermal-sensor-cells":
86 const: 1
87 description:
88 Number of cells required to uniquely identify the thermal sensors. Since
89 we have multiple sensors this is set to 1
90
91allOf:
92 - if:
93 properties:
94 compatible:
95 contains:
96 enum:
97 - qcom,msm8916-tsens
98 - qcom,msm8974-tsens
99 - qcom,msm8976-tsens
100 - qcom,qcs404-tsens
101 - qcom,tsens-v0_1
102 - qcom,tsens-v1
103 then:
104 properties:
105 interrupts:
106 maxItems: 1
107 interrupt-names:
108 maxItems: 1
109
110 else:
111 properties:
112 interrupts:
113 minItems: 2
114 interrupt-names:
115 minItems: 2
116
117required:
118 - compatible
119 - reg
120 - "#qcom,sensors"
121 - interrupts
122 - interrupt-names
123 - "#thermal-sensor-cells"
124
125additionalProperties: false
126
127examples:
128 - |
129 #include <dt-bindings/interrupt-controller/arm-gic.h>
130 // Example 1 (legacy: for pre v1 IP):
131 tsens1: thermal-sensor@900000 {
132 compatible = "qcom,msm8916-tsens", "qcom,tsens-v0_1";
133 reg = <0x4a9000 0x1000>, /* TM */
134 <0x4a8000 0x1000>; /* SROT */
135
136 nvmem-cells = <&tsens_caldata>, <&tsens_calsel>;
137 nvmem-cell-names = "calib", "calib_sel";
138
139 interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
140 interrupt-names = "uplow";
141
142 #qcom,sensors = <5>;
143 #thermal-sensor-cells = <1>;
144 };
145
146 - |
147 #include <dt-bindings/interrupt-controller/arm-gic.h>
148 // Example 2 (for any platform containing v1 of the TSENS IP):
149 tsens2: thermal-sensor@4a9000 {
150 compatible = "qcom,qcs404-tsens", "qcom,tsens-v1";
151 reg = <0x004a9000 0x1000>, /* TM */
152 <0x004a8000 0x1000>; /* SROT */
153
154 nvmem-cells = <&tsens_caldata>;
155 nvmem-cell-names = "calib";
156
157 interrupts = <GIC_SPI 506 IRQ_TYPE_LEVEL_HIGH>;
158 interrupt-names = "uplow";
159
160 #qcom,sensors = <10>;
161 #thermal-sensor-cells = <1>;
162 };
163
164 - |
165 #include <dt-bindings/interrupt-controller/arm-gic.h>
166 // Example 3 (for any platform containing v2 of the TSENS IP):
167 tsens3: thermal-sensor@c263000 {
168 compatible = "qcom,sdm845-tsens", "qcom,tsens-v2";
169 reg = <0xc263000 0x1ff>,
170 <0xc222000 0x1ff>;
171
172 interrupts = <GIC_SPI 506 IRQ_TYPE_LEVEL_HIGH>,
173 <GIC_SPI 508 IRQ_TYPE_LEVEL_HIGH>;
174 interrupt-names = "uplow", "critical";
175
176 #qcom,sensors = <13>;
177 #thermal-sensor-cells = <1>;
178 };
179...