renesas,tmu.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/timer/renesas,tmu.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Renesas R-Mobile/R-Car Timer Unit (TMU)
    8 
    9 maintainers:
   10   - Geert Uytterhoeven <geert+renesas@glider.be>
   11   - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
   12 
   13 description:
   14   The TMU is a 32-bit timer/counter with configurable clock inputs and
   15   programmable compare match.
   16 
   17   Channels share hardware resources but their counter and compare match value
   18   are independent. The TMU hardware supports up to three channels.
   19 
   20 properties:
   21   compatible:
   22     items:
   23       - enum:
   24           - renesas,tmu-r8a7740  # R-Mobile A1
   25           - renesas,tmu-r8a774a1 # RZ/G2M
   26           - renesas,tmu-r8a774b1 # RZ/G2N
   27           - renesas,tmu-r8a774c0 # RZ/G2E
   28           - renesas,tmu-r8a774e1 # RZ/G2H
   29           - renesas,tmu-r8a7778  # R-Car M1A
   30           - renesas,tmu-r8a7779  # R-Car H1
   31           - renesas,tmu-r8a7795  # R-Car H3
   32           - renesas,tmu-r8a7796  # R-Car M3-W
   33           - renesas,tmu-r8a77961 # R-Car M3-W+
   34           - renesas,tmu-r8a77965 # R-Car M3-N
   35           - renesas,tmu-r8a77970 # R-Car V3M
   36           - renesas,tmu-r8a77980 # R-Car V3H
   37           - renesas,tmu-r8a77990 # R-Car E3
   38           - renesas,tmu-r8a77995 # R-Car D3
   39           - renesas,tmu-r8a779a0 # R-Car V3U
   40       - const: renesas,tmu
   41 
   42   reg:
   43     maxItems: 1
   44 
   45   interrupts:
   46     minItems: 2
   47     maxItems: 3
   48 
   49   clocks:
   50     maxItems: 1
   51 
   52   clock-names:
   53     const: fck
   54 
   55   power-domains:
   56     maxItems: 1
   57 
   58   resets:
   59     maxItems: 1
   60 
   61   '#renesas,channels':
   62     description:
   63       Number of channels implemented by the timer.
   64     $ref: /schemas/types.yaml#/definitions/uint32
   65     enum: [ 2, 3 ]
   66     default: 3
   67 
   68 required:
   69   - compatible
   70   - reg
   71   - interrupts
   72   - clocks
   73   - clock-names
   74   - power-domains
   75 
   76 if:
   77   not:
   78     properties:
   79       compatible:
   80         contains:
   81           enum:
   82             - renesas,tmu-r8a7740
   83             - renesas,tmu-r8a7778
   84             - renesas,tmu-r8a7779
   85 then:
   86   required:
   87     - resets
   88 
   89 additionalProperties: false
   90 
   91 examples:
   92   - |
   93     #include <dt-bindings/clock/r8a7779-clock.h>
   94     #include <dt-bindings/interrupt-controller/arm-gic.h>
   95     #include <dt-bindings/power/r8a7779-sysc.h>
   96     tmu0: timer@ffd80000 {
   97             compatible = "renesas,tmu-r8a7779", "renesas,tmu";
   98             reg = <0xffd80000 0x30>;
   99             interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,
  100                          <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
  101                          <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
  102             clocks = <&mstp0_clks R8A7779_CLK_TMU0>;
  103             clock-names = "fck";
  104             power-domains = <&sysc R8A7779_PD_ALWAYS_ON>;
  105             #renesas,channels = <3>;
  106     };

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sys/contrib/device-tree/Bindings/timer/renesas,tmu.yaml