Commit 40caba2b authored by Hao-Wen Ting's avatar Hao-Wen Ting Committed by Daniel Lezcano
Browse files

dt-bindings: timer: Add Realtek SYSTIMER 



The Realtek SYSTIMER (System Timer) is a 64-bit global hardware counter
operating at a fixed 1MHz frequency. Thanks to its compare match
interrupt capability, the timer natively supports oneshot mode for tick
broadcast functionality.

Signed-off-by: default avatarHao-Wen Ting <haowen.ting@realtek.com>
Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: default avatarKrzysztof Kozlowski <krzk@kernel.org>
Link: https://patch.msgid.link/20251126060110.198330-2-haowen.ting@realtek.com
parent ed92a968

Documentation/devicetree/bindings/timer/realtek,rtd1625-systimer.yaml

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/timer/realtek,rtd1625-systimer.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: Realtek System Timer



maintainers:

  - Hao-Wen Ting <haowen.ting@realtek.com>



description:

  The Realtek SYSTIMER (System Timer) is a 64-bit global hardware counter operating

  at a fixed 1MHz frequency. Thanks to its compare match interrupt capability,

  the timer natively supports oneshot mode for tick broadcast functionality.



properties:

  compatible:

    oneOf:

      - const: realtek,rtd1625-systimer

      - items:

          - const: realtek,rtd1635-systimer

          - const: realtek,rtd1625-systimer



  reg:

    maxItems: 1



  interrupts:

    maxItems: 1



required:

  - compatible

  - reg

  - interrupts



additionalProperties: false



examples:

  - |

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



    timer@89420 {

        compatible = "realtek,rtd1635-systimer",

                     "realtek,rtd1625-systimer";

        reg = <0x89420 0x18>;

        interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;

    };