linux-kernel - Re: [PATCH 2/6] ASoC: lochnagar: Move binding over to dtschema

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Date:   Fri, 1 May 2020 16:06:13 -0500
From:   Rob Herring <robh@...nel.org>
To:     Charles Keepax <ckeepax@...nsource.cirrus.com>
Cc:     lee.jones@...aro.org, broonie@...nel.org, mturquette@...libre.com,
        sboyd@...nel.org, jdelvare@...e.com, linux@...ck-us.net,
        linus.walleij@...aro.org, lgirdwood@...il.com,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        patches@...nsource.cirrus.com
Subject: Re: [PATCH 2/6] ASoC: lochnagar: Move binding over to dtschema

On Mon, Apr 27, 2020 at 11:28:08AM +0100, Charles Keepax wrote:
> Signed-off-by: Charles Keepax <ckeepax@...nsource.cirrus.com>
> ---
>  .../devicetree/bindings/sound/cirrus,lochnagar.txt | 39 ---------------
>  .../bindings/sound/cirrus,lochnagar.yaml           | 58 ++++++++++++++++++++++
>  2 files changed, 58 insertions(+), 39 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/sound/cirrus,lochnagar.txt
>  create mode 100644 Documentation/devicetree/bindings/sound/cirrus,lochnagar.yaml
> 
> diff --git a/Documentation/devicetree/bindings/sound/cirrus,lochnagar.txt b/Documentation/devicetree/bindings/sound/cirrus,lochnagar.txt
> deleted file mode 100644
> index 41ae2699f07a9..0000000000000
> --- a/Documentation/devicetree/bindings/sound/cirrus,lochnagar.txt
> +++ /dev/null
> @@ -1,39 +0,0 @@
> -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";
> -};
> diff --git a/Documentation/devicetree/bindings/sound/cirrus,lochnagar.yaml b/Documentation/devicetree/bindings/sound/cirrus,lochnagar.yaml
> new file mode 100644
> index 0000000000000..6a266793ebd16
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/cirrus,lochnagar.yaml
> @@ -0,0 +1,58 @@
> +# 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@...nsource.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:
> +  lochnagar-sc:
> +    type: object
> +
> +    properties:
> +      compatible:
> +        contains:
> +          enum:
> +            - cirrus,lochnagar2-soundcard
> +
> +      '#sound-dai-cells':
> +        description:
> +          Must be 1. The first cell indicating the audio interface.

'Must be 1' is what the constraint says.

> +        const: 1
> +
> +      clocks:
> +        maxItems: 1
> +        description:
> +          Master clock source for the sound card, should normally be set to
> +          LOCHNAGAR_SOUNDCARD_MCLK provided by the Lochnagar clock driver.

blank line.

> +      clock-names:
> +        const: mclk
> +        description:
> +          Must contain the string mclk.

That's what the constraint says already.

> +
> +    required:
> +      - compatible
> +      - '#sound-dai-cells'
> +      - clocks
> +      - clock-names
> +
> +    additionalProperties: false
> -- 
> 2.11.0
>