xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/timer/renesas,ostm.yaml (revision 62306a36)

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/timer/renesas,ostm.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Renesas OS Timer (OSTM)

maintainers:
  - Chris Brandt <chris.brandt@renesas.com>
  - Geert Uytterhoeven <geert+renesas@glider.be>

description:
  The OSTM is a multi-channel 32-bit timer/counter with fixed clock source that
  can operate in either interval count down timer or free-running compare match
  mode.

  Channels are independent from each other.

properties:
  compatible:
    items:
      - enum:
          - renesas,r7s72100-ostm  # RZ/A1H
          - renesas,r7s9210-ostm   # RZ/A2M
          - renesas,r9a07g043-ostm # RZ/G2UL
          - renesas,r9a07g044-ostm # RZ/G2{L,LC}
          - renesas,r9a07g054-ostm # RZ/V2L
      - const: renesas,ostm        # Generic

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    maxItems: 1

  power-domains:
    maxItems: 1

  resets:
    maxItems: 1

required:
  - compatible
  - reg
  - interrupts
  - clocks
  - power-domains

if:
  properties:
    compatible:
      contains:
        enum:
          - renesas,r9a07g043-ostm
          - renesas,r9a07g044-ostm
          - renesas,r9a07g054-ostm
then:
  required:
    - resets

additionalProperties: false

examples:
  - |
    #include <dt-bindings/clock/r7s72100-clock.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    ostm0: timer@fcfec000 {
            compatible = "renesas,r7s72100-ostm", "renesas,ostm";
            reg = <0xfcfec000 0x30>;
            interrupts = <GIC_SPI 102 IRQ_TYPE_EDGE_RISING>;
            clocks = <&mstp5_clks R7S72100_CLK_OSTM0>;
            power-domains = <&cpg_clocks>;
    };