Bindings/thermal/nvidia,tegra30-tsensor.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/thermal/nvidia,tegra30-tsensor.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: NVIDIA Tegra30 Thermal Sensor
   8
   9 maintainers:
  10   - Dmitry Osipenko <digetx@gmail.com>
  11   - Jon Hunter <jonathanh@nvidia.com>
  12   - Thierry Reding <thierry.reding@gmail.com>
  13
  14 description: |
  15   TSENSOR provides thermal and voltage sensors which monitor temperature
  16   and voltage of the chip. Sensors are placed across the die to gauge the
  17   temperature of the whole chip. The TSENSOR module:
  18
  19     Generates an interrupt to SW to lower temperature via DVFS on reaching
  20     a certain thermal/voltage threshold.
  21
  22     Generates a signal to the CAR to reduce CPU frequency by half on reaching
  23     a certain thermal/voltage threshold.
  24
  25     Generates a signal to the PMC when the temperature reaches dangerously high
  26     levels to reset the chip and sets a flag in the PMC.
  27
  28   TSENSOR has two channels which monitor two different spots of the SoC.
  29
  30 properties:
  31   compatible:
  32     const: nvidia,tegra30-tsensor
  33
  34   reg:
  35     maxItems: 1
  36
  37   clocks:
  38     maxItems: 1
  39
  40   resets:
  41     maxItems: 1
  42
  43   interrupts:
  44     maxItems: 1
  45
  46   "#thermal-sensor-cells":
  47     const: 1
  48
  49   assigned-clock-parents: true
  50   assigned-clock-rates: true
  51   assigned-clocks: true
  52
  53 required:
  54   - compatible
  55   - reg
  56   - clocks
  57   - resets
  58   - interrupts
  59   - "#thermal-sensor-cells"
  60
  61 additionalProperties: false
  62
  63 examples:
  64   - |
  65     thermal-sensor@70014000 {
  66       compatible = "nvidia,tegra30-tsensor";
  67       reg = <0x70014000 0x500>;
  68       interrupts = <0 102 4>;
  69       clocks = <&clk 100>;
  70       resets = <&rst 100>;
  71
  72       #thermal-sensor-cells = <1>;
  73     };