Re: [RFC PATCH] ASoC: dt-bindings: adi,adau17x1: Convert to DT schema

From: Krzysztof Kozlowski
Date: Sun Mar 12 2023 - 06:53:01 EST


On 11/03/2023 21:03, Vijaya Anand wrote:
> Convert the binding document for adi,adau17x1 from txt to yaml
> so one could validate dt-entries correctly and any future additions
> can go into yaml format. Add address and size cells to example to
> prevent errors regarding reg format.
>
> Signed-off-by: Vijaya Anand <sunrockers8@xxxxxxxxx>
> Cc: Daniel Baluta <daniel.baluta@xxxxxxx>

Thank you for your patch. There is something to discuss/improve.

> -Examples:
> -#include <dt-bindings/sound/adau17x1.h>
> -
> - i2c_bus {
> - adau1361@38 {
> - compatible = "adi,adau1761";
> - reg = <0x38>;
> -
> - clock-names = "mclk";
> - clocks = <&audio_clock>;
> - };
> - };
> diff --git a/Documentation/devicetree/bindings/sound/adi,adau17x1.yaml b/Documentation/devicetree/bindings/sound/adi,adau17x1.yaml
> new file mode 100644
> index 000000000000..9c1dbf2b4e70
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/adi,adau17x1.yaml
> @@ -0,0 +1,52 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/adi,adau17x1.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices ADAU1361/ADAU1461/ADAU1761/ADAU1961/ADAU1381/ADAU1781

But what is this? Codec? Amplifier?

> +
> +maintainers:
> + - Lars-Peter Clausen <lars@xxxxxxxxxx>
> +
> +properties:
> + compatible:
> + enum:
> + - adi,adau1361
> + - adi,adau1461
> + - adi,adau1761
> + - adi,adau1961
> + - adi,adau1381
> + - adi,adau1781

Please put them in some order, e.g. alphabetical.

> +
> + reg:
> + maxItems: 1
> + description: The i2c address. Value depends on the state of ADDR0 and ADDR1, as wired in hardware.

This exceeds 80 characters (see coding style).

> +
> + clock-names:
> + const: mclk
> +
> + clocks:
> + maxItems: 1
> + description:
> + phandle + clock-specifiers for the clock that provides the audio master
> + clock for the device.

Drop "phandle + clock-specifiers for the " and make it simpler, just
items with description:

clocks
items:
- description: .......


> +
> +required:
> + - compatible
> + - reg
> +
> +unevaluatedProperties: false

Instead:
additionalProperties: false
Unless you plan to reference dai-common or component-common

> +
> +examples:
> + - |
> + i2c_bus {

i2c

> + #address-cells = <1>;
> + #size-cells = <0>;
> + adau1361@38 {

Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

> + compatible = "adi,adau1761";
> + reg = <0x38>;
> + clock-names = "mclk";
> + clocks = <&audio_clock>;


Best regards,
Krzysztof