rcar-thermal.yaml

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    1 # SPDX-License-Identifier: GPL-2.0-only
    2 # Copyright (C) 2020 Renesas Electronics Corp.
    3 %YAML 1.2
    4 ---
    5 $id: http://devicetree.org/schemas/thermal/rcar-thermal.yaml#
    6 $schema: http://devicetree.org/meta-schemas/core.yaml#
    7 
    8 title: Renesas R-Car Thermal
    9 
   10 maintainers:
   11   - Niklas Söderlund <niklas.soderlund@ragnatech.se>
   12 
   13 properties:
   14   compatible:
   15     oneOf:
   16       - items:
   17           - enum:
   18               - renesas,thermal-r8a73a4 # R-Mobile APE6
   19               - renesas,thermal-r8a7779 # R-Car H1
   20           - const: renesas,rcar-thermal # Generic without thermal-zone
   21       - items:
   22           - enum:
   23               - renesas,thermal-r8a7742 # RZ/G1H
   24               - renesas,thermal-r8a7743 # RZ/G1M
   25               - renesas,thermal-r8a7744 # RZ/G1N
   26           - const: renesas,rcar-gen2-thermal # Generic thermal-zone
   27       - items:
   28           - enum:
   29               - renesas,thermal-r8a7790 # R-Car H2
   30               - renesas,thermal-r8a7791 # R-Car M2-W
   31               - renesas,thermal-r8a7792 # R-Car V2H
   32               - renesas,thermal-r8a7793 # R-Car M2-N
   33           - const: renesas,rcar-gen2-thermal # Generic thermal-zone
   34           - const: renesas,rcar-thermal # Generic without thermal-zone
   35       - items:
   36           - enum:
   37               - renesas,thermal-r8a774c0 # RZ/G2E
   38               - renesas,thermal-r8a77970 # R-Car V3M
   39               - renesas,thermal-r8a77990 # R-Car E3
   40               - renesas,thermal-r8a77995 # R-Car D3
   41   reg:
   42     description:
   43       Address ranges of the thermal registers. If more then one range is given
   44       the first one must be the common registers followed by each sensor
   45       according to the datasheet.
   46     minItems: 1
   47     maxItems: 4
   48 
   49   interrupts:
   50     minItems: 1
   51     maxItems: 3
   52 
   53   clocks:
   54     maxItems: 1
   55 
   56   power-domains:
   57     maxItems: 1
   58 
   59   resets:
   60     maxItems: 1
   61 
   62   "#thermal-sensor-cells":
   63     const: 0
   64 
   65 required:
   66   - compatible
   67   - reg
   68 
   69 allOf:
   70   - if:
   71       not:
   72         properties:
   73           compatible:
   74             contains:
   75               enum:
   76                 - renesas,thermal-r8a73a4 # R-Mobile APE6
   77                 - renesas,thermal-r8a7779 # R-Car H1
   78     then:
   79       required:
   80         - resets
   81         - '#thermal-sensor-cells'
   82 
   83   - if:
   84       not:
   85         properties:
   86           compatible:
   87             contains:
   88               const: renesas,thermal-r8a7779 # R-Car H1
   89     then:
   90       required:
   91         - interrupts
   92         - clocks
   93         - power-domains
   94 
   95 additionalProperties: false
   96 
   97 examples:
   98   # Example (non interrupt support)
   99   - |
  100     thermal@ffc48000 {
  101             compatible = "renesas,thermal-r8a7779", "renesas,rcar-thermal";
  102             reg = <0xffc48000 0x38>;
  103     };
  104 
  105   # Example (interrupt support)
  106   - |
  107     #include <dt-bindings/clock/r8a73a4-clock.h>
  108     #include <dt-bindings/interrupt-controller/arm-gic.h>
  109     #include <dt-bindings/interrupt-controller/irq.h>
  110 
  111     thermal@e61f0000 {
  112             compatible = "renesas,thermal-r8a73a4", "renesas,rcar-thermal";
  113             reg = <0xe61f0000 0x14>, <0xe61f0100 0x38>,
  114                   <0xe61f0200 0x38>, <0xe61f0300 0x38>;
  115             interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
  116             clocks = <&mstp5_clks R8A73A4_CLK_THERMAL>;
  117             power-domains = <&pd_c5>;
  118     };
  119 
  120   # Example (with thermal-zone)
  121   - |
  122     #include <dt-bindings/clock/r8a7790-cpg-mssr.h>
  123     #include <dt-bindings/interrupt-controller/arm-gic.h>
  124     #include <dt-bindings/power/r8a7790-sysc.h>
  125 
  126     thermal: thermal@e61f0000 {
  127       compatible = "renesas,thermal-r8a7790",
  128                    "renesas,rcar-gen2-thermal",
  129                    "renesas,rcar-thermal";
  130             reg = <0xe61f0000 0x10>, <0xe61f0100 0x38>;
  131             interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
  132             clocks = <&cpg CPG_MOD 522>;
  133             power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
  134             resets = <&cpg 522>;
  135             #thermal-sensor-cells = <0>;
  136     };
  137 
  138     thermal-zones {
  139             cpu_thermal: cpu-thermal {
  140                     polling-delay-passive = <1000>;
  141                     polling-delay = <5000>;
  142 
  143                     thermal-sensors = <&thermal>;
  144 
  145                     trips {
  146                             cpu-crit {
  147                                     temperature = <115000>;
  148                                     hysteresis = <0>;
  149                                     type = "critical";
  150                             };
  151                     };
  152                     cooling-maps {
  153                     };
  154             };
  155     };

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