Documentation/devicetree/bindings/thermal/qcom-tsens.yaml

   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
   8 title: QCOM SoC Temperature Sensor (TSENS)
   9
  10 maintainers:
  11   - Amit Kucheria <amitk@kernel.org>
  12
  13 description: |
  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
  19 properties:
  20   compatible:
  21     oneOf:
  22       - description: msm9860 TSENS based
  23         items:
  24           - enum:
  25               - qcom,ipq8064-tsens
  26
  27       - description: v0.1 of TSENS
  28         items:
  29           - enum:
  30               - qcom,mdm9607-tsens
  31               - qcom,msm8916-tsens
  32               - qcom,msm8939-tsens
  33               - qcom,msm8974-tsens
  34           - const: qcom,tsens-v0_1
  35
  36       - description: v1 of TSENS
  37         items:
  38           - enum:
  39               - qcom,msm8976-tsens
  40               - qcom,qcs404-tsens
  41           - const: qcom,tsens-v1
  42
  43       - description: v2 of TSENS
  44         items:
  45           - enum:
  46               - qcom,msm8996-tsens
  47               - qcom,msm8998-tsens
  48               - qcom,sc7180-tsens
  49               - qcom,sdm845-tsens
  50               - qcom,sm8150-tsens
  51               - qcom,sm8250-tsens
  52               - qcom,sm8350-tsens
  53           - const: qcom,tsens-v2
  54
  55   reg:
  56     items:
  57       - description: TM registers
  58       - description: SROT registers
  59
  60   interrupts:
  61     minItems: 1
  62     items:
  63       - description: Combined interrupt if upper or lower threshold crossed
  64       - description: Interrupt if critical threshold crossed
  65
  66   interrupt-names:
  67     minItems: 1
  68     items:
  69       - const: uplow
  70       - const: critical
  71
  72   nvmem-cells:
  73     minItems: 1
  74     maxItems: 2
  75     description:
  76       Reference to an nvmem node for the calibration data
  77
  78   nvmem-cell-names:
  79     minItems: 1
  80     maxItems: 2
  81     items:
  82       - const: calib
  83       - enum:
  84           - calib_backup
  85           - calib_sel
  86
  87   "#qcom,sensors":
  88     description:
  89       Number of sensors enabled on this platform
  90     $ref: /schemas/types.yaml#/definitions/uint32
  91     minimum: 1
  92     maximum: 16
  93
  94   "#thermal-sensor-cells":
  95     const: 1
  96     description:
  97       Number of cells required to uniquely identify the thermal sensors. Since
  98       we have multiple sensors this is set to 1
  99
 100 required:
 101   - compatible
 102   - interrupts
 103   - interrupt-names
 104   - "#thermal-sensor-cells"
 105   - "#qcom,sensors"
 106
 107 allOf:
 108   - if:
 109       properties:
 110         compatible:
 111           contains:
 112             enum:
 113               - qcom,ipq8064-tsens
 114               - qcom,mdm9607-tsens
 115               - qcom,msm8916-tsens
 116               - qcom,msm8974-tsens
 117               - qcom,msm8976-tsens
 118               - qcom,qcs404-tsens
 119               - qcom,tsens-v0_1
 120               - qcom,tsens-v1
 121     then:
 122       properties:
 123         interrupts:
 124           maxItems: 1
 125         interrupt-names:
 126           maxItems: 1
 127
 128     else:
 129       properties:
 130         interrupts:
 131           minItems: 2
 132         interrupt-names:
 133           minItems: 2
 134
 135   - if:
 136       properties:
 137         compatible:
 138           contains:
 139             enum:
 140               - qcom,tsens-v0_1
 141               - qcom,tsens-v1
 142               - qcom,tsens-v2
 143
 144     then:
 145       required:
 146         - reg
 147
 148 additionalProperties: false
 149
 150 examples:
 151   - |
 152     #include <dt-bindings/interrupt-controller/arm-gic.h>
 153     // Example msm9860 based SoC (ipq8064):
 154     gcc: clock-controller {
 155
 156            /* ... */
 157
 158            tsens: thermal-sensor {
 159                 compatible = "qcom,ipq8064-tsens";
 160
 161                  nvmem-cells = <&tsens_calib>, <&tsens_calib_backup>;
 162                  nvmem-cell-names = "calib", "calib_backup";
 163                  interrupts = <GIC_SPI 178 IRQ_TYPE_LEVEL_HIGH>;
 164                  interrupt-names = "uplow";
 165
 166                  #qcom,sensors = <11>;
 167                  #thermal-sensor-cells = <1>;
 168           };
 169     };
 170
 171   - |
 172     #include <dt-bindings/interrupt-controller/arm-gic.h>
 173     // Example 1 (legacy: for pre v1 IP):
 174     tsens1: thermal-sensor@900000 {
 175            compatible = "qcom,msm8916-tsens", "qcom,tsens-v0_1";
 176            reg = <0x4a9000 0x1000>, /* TM */
 177                  <0x4a8000 0x1000>; /* SROT */
 178
 179            nvmem-cells = <&tsens_caldata>, <&tsens_calsel>;
 180            nvmem-cell-names = "calib", "calib_sel";
 181
 182            interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
 183            interrupt-names = "uplow";
 184
 185            #qcom,sensors = <5>;
 186            #thermal-sensor-cells = <1>;
 187     };
 188
 189   - |
 190     #include <dt-bindings/interrupt-controller/arm-gic.h>
 191     // Example 2 (for any platform containing v1 of the TSENS IP):
 192     tsens2: thermal-sensor@4a9000 {
 193           compatible = "qcom,qcs404-tsens", "qcom,tsens-v1";
 194           reg = <0x004a9000 0x1000>, /* TM */
 195                 <0x004a8000 0x1000>; /* SROT */
 196
 197           nvmem-cells = <&tsens_caldata>;
 198           nvmem-cell-names = "calib";
 199
 200           interrupts = <GIC_SPI 506 IRQ_TYPE_LEVEL_HIGH>;
 201           interrupt-names = "uplow";
 202
 203           #qcom,sensors = <10>;
 204           #thermal-sensor-cells = <1>;
 205     };
 206
 207   - |
 208     #include <dt-bindings/interrupt-controller/arm-gic.h>
 209     // Example 3 (for any platform containing v2 of the TSENS IP):
 210     tsens3: thermal-sensor@c263000 {
 211            compatible = "qcom,sdm845-tsens", "qcom,tsens-v2";
 212            reg = <0xc263000 0x1ff>,
 213                  <0xc222000 0x1ff>;
 214
 215            interrupts = <GIC_SPI 506 IRQ_TYPE_LEVEL_HIGH>,
 216                         <GIC_SPI 508 IRQ_TYPE_LEVEL_HIGH>;
 217            interrupt-names = "uplow", "critical";
 218
 219            #qcom,sensors = <13>;
 220            #thermal-sensor-cells = <1>;
 221     };
 222 ...