Commit 960a2f4c authored by Rob Herring (Arm)'s avatar Rob Herring (Arm) Committed by Daniel Lezcano
Browse files

dt-bindings: timer: Convert snps,arc-timer to DT schema 



Convert the Synopsys ARC Local Timer binding to DT schema format. It's a
straight-forward conversion.

Signed-off-by: default avatarRob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250506022317.2589010-1-robh@kernel.org


Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
parent 58ac7dc3

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

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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)



Required properties:



- compatible : should be "snps,arc-timer"

- interrupts : single Interrupt going into parent intc

	       (16 for ARCHS cores, 3 for ARC700 cores)

- clocks     : phandle to the source clock



Example:



	timer0 {

		compatible = "snps,arc-timer";

		interrupts = <3>;

		interrupt-parent = <&core_intc>;

		clocks = <&core_clk>;

	};



	timer1 {

		compatible = "snps,arc-timer";

		clocks = <&core_clk>;

	};

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

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# 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>;

    };