Documentation/devicetree/bindings/thermal/rcar-thermal.txt

   1 * Renesas R-Car Thermal
   2
   3 Required properties:
   4 - compatible            : "renesas,thermal-<soctype>",
   5                            "renesas,rcar-gen2-thermal" (with thermal-zone) or
   6                            "renesas,rcar-thermal" (without thermal-zone) as
   7                            fallback except R-Car V3M/E3/D3 and RZ/G2E.
   8                           Examples with soctypes are:
   9                             - "renesas,thermal-r8a73a4" (R-Mobile APE6)
  10                             - "renesas,thermal-r8a7743" (RZ/G1M)
  11                             - "renesas,thermal-r8a7744" (RZ/G1N)
  12                             - "renesas,thermal-r8a774c0" (RZ/G2E)
  13                             - "renesas,thermal-r8a7779" (R-Car H1)
  14                             - "renesas,thermal-r8a7790" (R-Car H2)
  15                             - "renesas,thermal-r8a7791" (R-Car M2-W)
  16                             - "renesas,thermal-r8a7792" (R-Car V2H)
  17                             - "renesas,thermal-r8a7793" (R-Car M2-N)
  18                             - "renesas,thermal-r8a77970" (R-Car V3M)
  19                             - "renesas,thermal-r8a77990" (R-Car E3)
  20                             - "renesas,thermal-r8a77995" (R-Car D3)
  21 - reg                   : Address range of the thermal registers.
  22                           The 1st reg will be recognized as common register
  23                           if it has "interrupts".
  24
  25 Option properties:
  26
  27 - interrupts            : If present should contain 3 interrupts for
  28                           R-Car V3M/E3/D3 and RZ/G2E or 1 interrupt otherwise.
  29
  30 Example (non interrupt support):
  31
  32 thermal@ffc48000 {
  33         compatible = "renesas,thermal-r8a7779", "renesas,rcar-thermal";
  34         reg = <0xffc48000 0x38>;
  35 };
  36
  37 Example (interrupt support):
  38
  39 thermal@e61f0000 {
  40         compatible = "renesas,thermal-r8a73a4", "renesas,rcar-thermal";
  41         reg = <0xe61f0000 0x14
  42                 0xe61f0100 0x38
  43                 0xe61f0200 0x38
  44                 0xe61f0300 0x38>;
  45         interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
  46 };
  47
  48 Example (with thermal-zone):
  49
  50 thermal-zones {
  51         cpu_thermal: cpu-thermal {
  52                 polling-delay-passive   = <1000>;
  53                 polling-delay           = <5000>;
  54
  55                 thermal-sensors = <&thermal>;
  56
  57                 trips {
  58                         cpu-crit {
  59                                 temperature     = <115000>;
  60                                 hysteresis      = <0>;
  61                                 type            = "critical";
  62                         };
  63                 };
  64                 cooling-maps {
  65                 };
  66         };
  67 };
  68
  69 thermal: thermal@e61f0000 {
  70         compatible =    "renesas,thermal-r8a7790",
  71                         "renesas,rcar-gen2-thermal",
  72                         "renesas,rcar-thermal";
  73         reg = <0 0xe61f0000 0 0x14>, <0 0xe61f0100 0 0x38>;
  74         interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
  75         clocks = <&mstp5_clks R8A7790_CLK_THERMAL>;
  76         power-domains = <&cpg_clocks>;
  77         #thermal-sensor-cells = <0>;
  78 };