linux-kernel - Re: [PATCH v1] ASoC: dt-bindings: Add tas2505 audio amplifier

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Message-ID: <a7761c1e-9327-38f7-8e7b-0b3c3007668e@linaro.org>
Date:   Wed, 12 Jul 2023 07:25:54 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Kevin Lu <luminlong@....com>, broonie@...nel.org,
        lgirdwood@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        tiwai@...e.com
Cc:     kevin-lu@...com, shenghao-ding@...com, alsa-devel@...a-project.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] ASoC: dt-bindings: Add tas2505 audio amplifier

On 12/07/2023 06:40, Kevin Lu wrote:
> Create tas2505.yaml for tas2505.
> 
> Signed-off-by: Kevin Lu <luminlong@....com>
> ---
>  .../devicetree/bindings/sound/tas2505.yaml    | 72 +++++++++++++++++++
>  1 file changed, 72 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/sound/tas2505.yaml

Filename like compatible.

> 
> diff --git a/Documentation/devicetree/bindings/sound/tas2505.yaml b/Documentation/devicetree/bindings/sound/tas2505.yaml
> new file mode 100644
> index 0000000..6cc3fe4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/tas2505.yaml
> @@ -0,0 +1,72 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright (C) 2019 Texas Instruments Incorporated
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/sound/tas2505.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"

Drop quotes

> +
> +title: Texas Instruments TAS2505 Mono Audio Amplifier
> +
> +maintainers:
> +  - Kevin Lu <kevin-lu@...com>
> +
> +description: |
> +  The TAS2505 is a mono Class-D speaker amp that supports both Digital
> +  and Analog inputs. The device is ideal for automotive instrument cluster,
> +  emergency call (eCall), and telematics applications. Direct I2S input
> +  removes the need for an external DAC in the audio signal path.
> +  An on-chip PLL provides the high speed clock needed by the DSP.
> +  The volume level is register controlled.
> +
> +  Specifications about the audio amplifier can be found at:
> +    https://www.ti.com/lit/gpn/tas2505
> +
> +allOf:
> +  - $ref: dai-common.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - ti,tas2505

Why are you adding duplicated binding?

> +
> +  reg:
> +    maxItems: 1
> +    description: |
> +       I2C address of the device can be set to 0x18.> +
> +  reset-gpios:
> +    maxItems: 1
> +    description: GPIO used to reset the device.

Drop description, it's obvious.

> +
> +  clock-source:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: Sets TDM clock sourse.

source, but anyway that is not the way to set clocks. Use "clocks"
property for your future bindings.

> +    enum:
> +      - 0 # Select MLCK
> +      - 1 # Select BLCK
> +
> +  '#sound-dai-cells':
> +    # The codec has a single DAI, the #sound-dai-cells=<1>; case is left in for backward
> +    # compatibility but is deprecated.

This is the first submission so there is no "deprecated" or "backwards
compatibility".


Best regards,
Krzysztof