Commit 49364138 authored by Fabrice Gasnier's avatar Fabrice Gasnier Committed by Rob Herring
Browse files

dt-bindings: timer: armv7m-systick: convert to dtschema 



Convert the ARMv7-M system timer bindings to DT schema format.

Signed-off-by: default avatarFabrice Gasnier <fabrice.gasnier@foss.st.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Signed-off-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1644414747-22159-1-git-send-email-fabrice.gasnier@foss.st.com
parent bd79e84c

Documentation/devicetree/bindings/timer/arm,armv7m-systick.txt

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* ARMv7M System Timer



ARMv7-M includes a system timer, known as SysTick. Current driver only

implements the clocksource feature.



Required properties:

- compatible	  : Should be "arm,armv7m-systick"

- reg		  : The address range of the timer



Required clocking property, have to be one of:

- clocks	  : The input clock of the timer

- clock-frequency : The rate in HZ in input of the ARM SysTick



Examples:



systick: timer@e000e010 {

	compatible = "arm,armv7m-systick";

	reg = <0xe000e010 0x10>;

	clocks = <&clk_systick>;

};



systick: timer@e000e010 {

	compatible = "arm,armv7m-systick";

	reg = <0xe000e010 0x10>;

	clock-frequency = <90000000>;

};

Documentation/devicetree/bindings/timer/arm,armv7m-systick.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/arm,armv7m-systick.yaml#

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



title: ARMv7M System Timer



maintainers:

  - Alexandre Torgue <alexandre.torgue@foss.st.com>

  - Fabrice Gasnier <fabrice.gasnier@foss.st.com>



description: ARMv7-M includes a system timer, known as SysTick.



properties:

  compatible:

    const: arm,armv7m-systick



  reg:

    maxItems: 1



  clocks:

    maxItems: 1



  clock-frequency: true



oneOf:

  - required:

      - clocks

  - required:

      - clock-frequency



required:

  - compatible

  - reg



additionalProperties: false



examples:

  - |

    timer@e000e010 {

        compatible = "arm,armv7m-systick";

        reg = <0xe000e010 0x10>;

        clocks = <&clk_systick>;

    };



  - |

    timer@e000e010 {

        compatible = "arm,armv7m-systick";

        reg = <0xe000e010 0x10>;

        clock-frequency = <90000000>;

    };



...