ASoC: lochnagar: Move binding over to dtschema

Cirrus Logic Lochnagar Audio Development Board

Lochnagar is an evaluation and development board for Cirrus Logic

Smart CODEC and Amp devices. It allows the connection of most Cirrus

Logic devices on mini-cards, as well as allowing connection of

various application processor systems to provide a full evaluation

platform.  Audio system topology, clocking and power can all be

controlled through the Lochnagar, allowing the device under test

to be used in a variety of possible use cases.

This binding document describes the binding for the audio portion

of the driver.

This binding must be part of the Lochnagar MFD binding:

  [4] ../mfd/cirrus,lochnagar.txt

Required properties:

  - compatible : One of the following strings:

                 "cirrus,lochnagar2-soundcard"

  - #sound-dai-cells : Must be set to 1.

  - clocks : Contains an entry for each entry in clock-names.

  - clock-names : Must include the following clocks:

      "mclk" Master clock source for the sound card, should normally

      be set to LOCHNAGAR_SOUNDCARD_MCLK provided by the Lochnagar

      clock driver.

Example:

lochnagar-sc {

	compatible = "cirrus,lochnagar2-soundcard";

	#sound-dai-cells = <1>;

	clocks = <&lochnagar_clk LOCHNAGAR_SOUNDCARD_MCLK>;

	clock-names = "mclk";

};

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/sound/cirrus,lochnagar.yaml#

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

title: Cirrus Logic Lochnagar Audio Development Board

maintainers:

  - patches@opensource.cirrus.com

description: |

  Lochnagar is an evaluation and development board for Cirrus Logic

  Smart CODEC and Amp devices. It allows the connection of most Cirrus

  Logic devices on mini-cards, as well as allowing connection of various

  application processor systems to provide a full evaluation platform.

  Audio system topology, clocking and power can all be controlled through

  the Lochnagar, allowing the device under test to be used in a variety of

  possible use cases.

  This binding document describes the binding for the audio portion of the

  driver.

  This binding must be part of the Lochnagar MFD binding:

    [1] ../mfd/cirrus,lochnagar.yaml

properties:

  compatible:

    enum:

      - cirrus,lochnagar2-soundcard

  '#sound-dai-cells':

    description:

      The first cell indicating the audio interface.

    const: 1

  clocks:

    description:

      Master clock source for the sound card, should normally be set to

      LOCHNAGAR_SOUNDCARD_MCLK provided by the Lochnagar clock driver.

    maxItems: 1

  clock-names:

    const: mclk

required:

  - compatible

  - '#sound-dai-cells'

  - clocks

  - clock-names

additionalProperties: false