Documentation/devicetree/bindings/timer/snps,arc-timer.yaml

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

title: Synopsys ARC Local Timer

maintainers:
  - Vineet Gupta <vgupta@synopsys.com>

description: >
  Synopsys ARC Local Timer with Interrupt Capabilities

    - Found on all ARC CPUs (ARC700/ARCHS)
    - Can be optionally programmed to interrupt on Limit
    - Two identical copies TIMER0 and TIMER1 exist in ARC cores and historically
      TIMER0 used as clockevent provider (true for all ARC cores)
      TIMER1 used for clocksource (mandatory for ARC700, optional for ARC HS)

properties:
  compatible:
    const: snps,arc-timer

  interrupts:
    maxItems: 1
    description: A single timer interrupt going into the parent interrupt controller.
      Use <16> for ARCHS cores, <3> for ARC700 cores.

  clocks:
    maxItems: 1

required:
  - compatible
  - clocks

additionalProperties: false

examples:
  - |
    timer0 {
        compatible = "snps,arc-timer";
        interrupts = <3>;
        clocks = <&core_clk>;
    };