linux-kernel - Re: [PATCH 2/9] dt-bindings: ASoC: Add chv3-i2s

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Date:   Fri, 14 Apr 2023 19:00:36 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Paweł Anikiel <pan@...ihalf.com>,
        alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, lgirdwood@...il.com,
        broonie@...nel.org
Cc:     perex@...ex.cz, tiwai@...e.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, dinguyen@...nel.org,
        lars@...afoo.de, nuno.sa@...log.com, upstream@...ihalf.com
Subject: Re: [PATCH 2/9] dt-bindings: ASoC: Add chv3-i2s

On 14/04/2023 16:01, Paweł Anikiel wrote:
> Add binding for chv3-i2s device.

Your subject needs improvements:
1. ASoC goes before bindings
2. You miss some meaningful title of device. "chv3-i2s" can be anything,
so add Google or Google Chameleon. Or use entire compatible.


> 
> Signed-off-by: Paweł Anikiel <pan@...ihalf.com>
> ---
>  .../bindings/sound/google,chv3-i2s.yaml       | 42 +++++++++++++++++++
>  1 file changed, 42 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/sound/google,chv3-i2s.yaml
> 
> diff --git a/Documentation/devicetree/bindings/sound/google,chv3-i2s.yaml b/Documentation/devicetree/bindings/sound/google,chv3-i2s.yaml
> new file mode 100644
> index 000000000000..6f49cf059ac5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/google,chv3-i2s.yaml
> @@ -0,0 +1,42 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/google,chv3-i2s.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Google Chameleon v3 I2S device
> +
> +maintainers:
> +  - Paweł Anikiel <pan@...ihalf.com>
> +
> +description: |
> +  I2S device for the Google Chameleon v3. The device handles both RX
> +  and TX using a producer/consumer ring buffer design.
> +
> +properties:
> +  compatible:
> +    const: google,chv3-i2s

Missing blank line.

Is chv3 the name of your SoC? Where are the SoC bindings? What's exactly
the versioning scheme for it (compatibles must be specific, not generic).

> +  reg:
> +    items:
> +      - description: core registers
> +      - description: irq registers

As well...

> +  interrupts:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    i2s0: i2s@...60300 {
> +        compatible = "google,chv3-i2s";
> +        reg = <0xc0060300 0x100>,
> +              <0xc0060f00 0x10>;
> +        interrupts = <0 20 IRQ_TYPE_LEVEL_HIGH>;

Isn't 0 also a known define?



Best regards,
Krzysztof