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Commit d9b51093 authored by Maxime Ripard's avatar Maxime Ripard Committed by Daniel Lezcano
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dt-bindings: timer: Convert Allwinner A13 HSTimer to a schema 



The newer Allwinner SoCs have a High Speed Timer supported in Linux, with a
matching Device Tree binding.

Now that we have the DT validation in place, let's convert the device tree
bindings for that controller over to a YAML schemas.

Signed-off-by: default avatarMaxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
parent bca4e084

Documentation/devicetree/bindings/timer/allwinner,sun5i-a13-hstimer.txt

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Allwinner SoCs High Speed Timer Controller



Required properties:



- compatible :	should be "allwinner,sun5i-a13-hstimer" or

		"allwinner,sun7i-a20-hstimer"

- reg : Specifies base physical address and size of the registers.

- interrupts :	The interrupts of these timers (2 for the sun5i IP, 4 for the sun7i

		one)

- clocks: phandle to the source clock (usually the AHB clock)



Optional properties:

- resets: phandle to a reset controller asserting the timer



Example:



timer@1c60000 {

	compatible = "allwinner,sun7i-a20-hstimer";

	reg = <0x01c60000 0x1000>;

	interrupts = <0 51 1>,

		     <0 52 1>,

		     <0 53 1>,

		     <0 54 1>;

	clocks = <&ahb1_gates 19>;

	resets = <&ahb1rst 19>;

};

Documentation/devicetree/bindings/timer/allwinner,sun5i-a13-hstimer.yaml

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# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/timer/allwinner,sun5i-a13-hstimer.yaml#

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



title: Allwinner A13 High-Speed Timer Device Tree Bindings



maintainers:

  - Chen-Yu Tsai <wens@csie.org>

  - Maxime Ripard <maxime.ripard@bootlin.com>



properties:

  compatible:

    oneOf:

      - const: allwinner,sun5i-a13-hstimer

      - const: allwinner,sun7i-a20-hstimer

      - items:

          - const: allwinner,sun6i-a31-hstimer

          - const: allwinner,sun7i-a20-hstimer



  reg:

    maxItems: 1



  interrupts:

    minItems: 2

    maxItems: 4

    items:

      - description: Timer 0 Interrupt

      - description: Timer 1 Interrupt

      - description: Timer 2 Interrupt

      - description: Timer 3 Interrupt



  clocks:

    maxItems: 1



  resets:

    maxItems: 1



required:

  - compatible

  - reg

  - interrupts

  - clocks



if:

  properties:

    compatible:

      items:

        const: allwinner,sun5i-a13-hstimer



then:

  properties:

    interrupts:

      minItems: 2

      maxItems: 2



else:

  properties:

    interrupts:

      minItems: 4

      maxItems: 4



additionalProperties: false



examples:

  - |

    timer@1c60000 {

        compatible = "allwinner,sun7i-a20-hstimer";

        reg = <0x01c60000 0x1000>;

        interrupts = <0 51 1>,

                     <0 52 1>,

                     <0 53 1>,

                     <0 54 1>;

        clocks = <&ahb1_gates 19>;

        resets = <&ahb1rst 19>;

    };



...