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 7title: NVIDIA Tegra30 Thermal Sensor 8 9maintainers: 10 - Dmitry Osipenko <digetx@gmail.com> 11 - Jon Hunter <jonathanh@nvidia.com> 12 - Thierry Reding <thierry.reding@gmail.com> 13 14description: | 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 30properties: 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 53required: 54 - compatible 55 - reg 56 - clocks 57 - resets 58 - interrupts 59 - "#thermal-sensor-cells" 60 61additionalProperties: false 62 63examples: 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 }; 74