xref: /linux/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml (revision b5bee6ced21ca98389000b7017dd41b0cc37fa50) 
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: msm8960 TSENS based
23        items:
24          - enum:
25              - qcom,ipq8064-tsens
26              - qcom,msm8960-tsens
27
28      - description: v0.1 of TSENS
29        items:
30          - enum:
31              - qcom,mdm9607-tsens
32              - qcom,msm8916-tsens
33              - qcom,msm8939-tsens
34              - qcom,msm8974-tsens
35          - const: qcom,tsens-v0_1
36
37      - description: v1 of TSENS
38        items:
39          - enum:
40              - qcom,msm8976-tsens
41              - qcom,qcs404-tsens
42          - const: qcom,tsens-v1
43
44      - description: v2 of TSENS
45        items:
46          - enum:
47              - qcom,msm8953-tsens
48              - qcom,msm8996-tsens
49              - qcom,msm8998-tsens
50              - qcom,sc7180-tsens
51              - qcom,sc7280-tsens
52              - qcom,sc8180x-tsens
53              - qcom,sc8280xp-tsens
54              - qcom,sdm630-tsens
55              - qcom,sdm845-tsens
56              - qcom,sm6350-tsens
57              - qcom,sm8150-tsens
58              - qcom,sm8250-tsens
59              - qcom,sm8350-tsens
60          - const: qcom,tsens-v2
61
62  reg:
63    items:
64      - description: TM registers
65      - description: SROT registers
66
67  interrupts:
68    minItems: 1
69    items:
70      - description: Combined interrupt if upper or lower threshold crossed
71      - description: Interrupt if critical threshold crossed
72
73  interrupt-names:
74    minItems: 1
75    items:
76      - const: uplow
77      - const: critical
78
79  nvmem-cells:
80    minItems: 1
81    maxItems: 2
82    description:
83      Reference to an nvmem node for the calibration data
84
85  nvmem-cell-names:
86    minItems: 1
87    items:
88      - const: calib
89      - enum:
90          - calib_backup
91          - calib_sel
92
93  "#qcom,sensors":
94    description:
95      Number of sensors enabled on this platform
96    $ref: /schemas/types.yaml#/definitions/uint32
97    minimum: 1
98    maximum: 16
99
100  "#thermal-sensor-cells":
101    const: 1
102    description:
103      Number of cells required to uniquely identify the thermal sensors. Since
104      we have multiple sensors this is set to 1
105
106required:
107  - compatible
108  - interrupts
109  - interrupt-names
110  - "#thermal-sensor-cells"
111  - "#qcom,sensors"
112
113allOf:
114  - if:
115      properties:
116        compatible:
117          contains:
118            enum:
119              - qcom,ipq8064-tsens
120              - qcom,mdm9607-tsens
121              - qcom,msm8916-tsens
122              - qcom,msm8960-tsens
123              - qcom,msm8974-tsens
124              - qcom,msm8976-tsens
125              - qcom,qcs404-tsens
126              - qcom,tsens-v0_1
127              - qcom,tsens-v1
128    then:
129      properties:
130        interrupts:
131          maxItems: 1
132        interrupt-names:
133          maxItems: 1
134
135    else:
136      properties:
137        interrupts:
138          minItems: 2
139        interrupt-names:
140          minItems: 2
141
142  - if:
143      properties:
144        compatible:
145          contains:
146            enum:
147              - qcom,tsens-v0_1
148              - qcom,tsens-v1
149              - qcom,tsens-v2
150
151    then:
152      required:
153        - reg
154
155additionalProperties: false
156
157examples:
158  - |
159    #include <dt-bindings/interrupt-controller/arm-gic.h>
160    // Example msm9860 based SoC (ipq8064):
161    gcc: clock-controller {
162
163           /* ... */
164
165           tsens: thermal-sensor {
166                compatible = "qcom,ipq8064-tsens";
167
168                 nvmem-cells = <&tsens_calib>, <&tsens_calib_backup>;
169                 nvmem-cell-names = "calib", "calib_backup";
170                 interrupts = <GIC_SPI 178 IRQ_TYPE_LEVEL_HIGH>;
171                 interrupt-names = "uplow";
172
173                 #qcom,sensors = <11>;
174                 #thermal-sensor-cells = <1>;
175          };
176    };
177
178  - |
179    #include <dt-bindings/interrupt-controller/arm-gic.h>
180    // Example 1 (legacy: for pre v1 IP):
181    tsens1: thermal-sensor@900000 {
182           compatible = "qcom,msm8916-tsens", "qcom,tsens-v0_1";
183           reg = <0x4a9000 0x1000>, /* TM */
184                 <0x4a8000 0x1000>; /* SROT */
185
186           nvmem-cells = <&tsens_caldata>, <&tsens_calsel>;
187           nvmem-cell-names = "calib", "calib_sel";
188
189           interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
190           interrupt-names = "uplow";
191
192           #qcom,sensors = <5>;
193           #thermal-sensor-cells = <1>;
194    };
195
196  - |
197    #include <dt-bindings/interrupt-controller/arm-gic.h>
198    // Example 2 (for any platform containing v1 of the TSENS IP):
199    tsens2: thermal-sensor@4a9000 {
200          compatible = "qcom,qcs404-tsens", "qcom,tsens-v1";
201          reg = <0x004a9000 0x1000>, /* TM */
202                <0x004a8000 0x1000>; /* SROT */
203
204          nvmem-cells = <&tsens_caldata>;
205          nvmem-cell-names = "calib";
206
207          interrupts = <GIC_SPI 506 IRQ_TYPE_LEVEL_HIGH>;
208          interrupt-names = "uplow";
209
210          #qcom,sensors = <10>;
211          #thermal-sensor-cells = <1>;
212    };
213
214  - |
215    #include <dt-bindings/interrupt-controller/arm-gic.h>
216    // Example 3 (for any platform containing v2 of the TSENS IP):
217    tsens3: thermal-sensor@c263000 {
218           compatible = "qcom,sdm845-tsens", "qcom,tsens-v2";
219           reg = <0xc263000 0x1ff>,
220                 <0xc222000 0x1ff>;
221
222           interrupts = <GIC_SPI 506 IRQ_TYPE_LEVEL_HIGH>,
223                        <GIC_SPI 508 IRQ_TYPE_LEVEL_HIGH>;
224           interrupt-names = "uplow", "critical";
225
226           #qcom,sensors = <13>;
227           #thermal-sensor-cells = <1>;
228    };
229...
230