xref: /linux-6.15/Documentation/devicetree/bindings/timer/nxp,sysctr-timer.yaml (revision f0b12d3f)

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

title: NXP System Counter Module(sys_ctr)

maintainers:
  - Bai Ping <[email protected]>

description: |
  The system counter(sys_ctr) is a programmable system counter
  which provides a shared time base to Cortex A15, A7, A53, A73,
  etc. it is intended for use in applications where the counter
  is always powered and support multiple, unrelated clocks. The
  compare frame inside can be used for timer purpose.

properties:
  compatible:
    oneOf:
      - enum:
          - nxp,imx95-sysctr-timer
          - nxp,sysctr-timer
      - items:
          - enum:
              - nxp,imx94-sysctr-timer
          - const: nxp,imx95-sysctr-timer

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    maxItems: 1

  clock-names:
    const: per

  nxp,no-divider:
    description: if present, means there is no internal base clk divider.
    type: boolean

required:
  - compatible
  - reg
  - interrupts
  - clocks
  - clock-names

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    timer@306a0000 {
        compatible = "nxp,sysctr-timer";
        reg = <0x306a0000 0x20000>;
        clocks = <&clk_8m>;
        clock-names = "per";
        interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
     };