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Linux/Documentation/devicetree/bindings/thermal/nvidia,tegra30-tsensor.yaml

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  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 $ref: thermal-sensor.yaml#
 31 
 32 properties:
 33   compatible:
 34     const: nvidia,tegra30-tsensor
 35 
 36   reg:
 37     maxItems: 1
 38 
 39   clocks:
 40     maxItems: 1
 41 
 42   resets:
 43     maxItems: 1
 44 
 45   interrupts:
 46     maxItems: 1
 47 
 48   "#thermal-sensor-cells":
 49     const: 1
 50 
 51 required:
 52   - compatible
 53   - reg
 54   - clocks
 55   - resets
 56   - interrupts
 57 
 58 unevaluatedProperties: false
 59 
 60 examples:
 61   - |
 62     thermal-sensor@70014000 {
 63       compatible = "nvidia,tegra30-tsensor";
 64       reg = <0x70014000 0x500>;
 65       interrupts = <0 102 4>;
 66       clocks = <&clk 100>;
 67       resets = <&rst 100>;
 68 
 69       #thermal-sensor-cells = <1>;
 70     };

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