Re: [PATCH v2 3/8] ASoC: dt-bindings: wcd937x-sdw: add bindings for wcd937x-sdw

Krzysztof Kozlowski
2024-04-17T15:56:37Z

On 16/04/2024 08:35, Mohammad Rafi Shaik wrote:
> From: Prasad Kumpatla <quic_pkumpatl@quicinc.com>
>
> Qualcomm WCD9370/WCD9375 Codec is a standalone Hi-Fi audio codec IC
> connected over SoundWire. This device has two SoundWire devices RX and
> TX respectively.
> This binding is for those slave devices on WCD9370/WCD9375.
>
> Co-developed-by: Mohammad Rafi Shaik <quic_mohs@quicinc.com>
> Signed-off-by: Mohammad Rafi Shaik <quic_mohs@quicinc.com>
> Signed-off-by: Prasad Kumpatla <quic_pkumpatl@quicinc.com>
> ---
> .../bindings/sound/qcom,wcd937x-sdw.yaml | 71 +++++++++++++++++++
> 1 file changed, 71 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/sound/qcom,wcd937x-sdw.yaml
>
> diff --git a/Documentation/devicetree/bindings/sound/qcom,wcd937x-sdw.yaml b/Documentation/devicetree/bindings/sound/qcom,wcd937x-sdw.yaml
> new file mode 100644
> index 000000000000..2b7358e266ba
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/qcom,wcd937x-sdw.yaml
> @@ -0,0 +1,71 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/qcom,wcd937x-sdw.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm SoundWire Slave devices on WCD9370
> +
> +maintainers:
> + - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> +
> +description: |

Do not need '|' unless you need to preserve formatting.

> + Qualcomm WCD9370 Codec is a standalone Hi-Fi audio codec IC.
> + It has RX and TX Soundwire slave devices. This bindings is for the
> + slave devices.
> +
> +properties:
> + compatible:
> + const: sdw20217010a00
> +
> + reg:
> + maxItems: 1
> +
> + qcom,tx-port-mapping:
> + description: |
> + Specifies static port mapping between slave and master tx ports.
> + In the order of slave port index.

Use inclusive terminology. Describe what is here - what is the index?
What is the value?

> + $ref: /schemas/types.yaml#/definitions/uint32-array
> + minItems: 4
> + maxItems: 4

Add constraints on values. You have maximum 15 TX ports, don't you?

> +
> + qcom,rx-port-mapping:
> + description: |
> + Specifies static port mapping between slave and master rx ports.
> + In the order of slave port index.
> + $ref: /schemas/types.yaml#/definitions/uint32-array
> + minItems: 5
> + maxItems: 5
> +
> +required:
> + - compatible
> + - reg
> + - qcom,port-mapping

Test your binding. There is no need to engage reviewers for reviewing
simple mistakes which *tools* can point. Respect reviewers time and use
the tools first.

You need oneOf: with required for TX and RX... or just unify the
properties. Why do you need two?

> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + soundwire@3210000 {
Drop unit address.

> + #address-cells = <2>;
> + #size-cells = <0>;
> + reg = <0x03210000 0x2000>;

Drop, not relevant and not placed correctly (see DTS coding style).

> + wcd937x_rx: codec@0,4 {

Drop label, not used.

> + compatible = "sdw20217010a00";
> + reg = <0 4>;
> + qcom,rx-port-mapping = <1 2 3 4 5>;
> + };
> + };
> +
> + soundwire@3230000 {

Drop this example, it's almost identical.

Best regards,
Krzysztof