Re: [PATCH v2 1/8] ASoC: dt-bindings: wcd937x: add bindings for wcd937x

Krzysztof Kozlowski
2024-04-17T15:51:08Z

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 device RX and
> TX respectively, supporting 3 x ADCs, ClassH, Ear, Aux PA, 2xHPH,
> 6 DMICs, MBHC.
>
> 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.yaml | 119 ++++++++++++++++++
> 1 file changed, 119 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/sound/qcom,wcd937x.yaml
>
> diff --git a/Documentation/devicetree/bindings/sound/qcom,wcd937x.yaml b/Documentation/devicetree/bindings/sound/qcom,wcd937x.yaml
> new file mode 100644
> index 000000000000..b45f823af04f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/qcom,wcd937x.yaml

No wildcards. This is wcd9370, right?

> @@ -0,0 +1,119 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/qcom,wcd937x.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm WCD9370 Audio Codec
> +
> +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.
> +
> +properties:
> + compatible:
> + enum:
> + - qcom,wcd9370-codec

Can it be anything else than codec?

> +
> + reset-gpios:
> + description: GPIO spec for reset line to use
> + maxItems: 1
> +
> + vdd-buck-supply:
> + description: A reference to the 1.8V buck supply
> +
> + vdd-rxtx-supply:
> + description: A reference to the 1.8V rx supply
> +
> + vdd-px-supply:
> + description: A reference to the 1.8V I/O supply
> +
> + vdd-mic-bias-supply:
> + description: A reference to the 3.8V mic bias supply
> +
> + qcom,tx-device:
> + $ref: /schemas/types.yaml#/definitions/phandle-array
> + description: A reference to Soundwire tx device phandle

"A reference to phandle" is not correct. Phandle is the reference.
Anyway, both are redundant.

>
> + qcom,rx-device:
> + $ref: /schemas/types.yaml#/definitions/phandle-array
> + description: A reference to Soundwire rx device phandle
> +
> + qcom,micbias1-microvolt:
> + description: micbias1 voltage
> + minimum: 1800000
> + maximum: 2850000
> +
> + qcom,micbias2-microvolt:
> + description: micbias2 voltage
> + minimum: 1800000
> + maximum: 2850000
> +
> + qcom,micbias3-microvolt:
> + description: micbias3 voltage
> + minimum: 1800000
> + maximum: 2850000
> +
> + '#sound-dai-cells':
> + const: 1
> +
> +required:
> + - compatible
> + - reset-gpios
> + - qcom,tx-device
> + - qcom,rx-device
> + - qcom,micbias1-microvolt
> + - qcom,micbias2-microvolt
> + - qcom,micbias3-microvolt
> + - "#sound-dai-cells"
> +
> +unevaluatedProperties: false

This does not make sense without ref to dai-common, so this should point
you to missing ref.

> +
> +examples:
> + - |
> + codec {
> + compatible = "qcom,wcd9370-codec";
> + pinctrl-names = "default", "sleep";
> + pinctrl-0 = <&wcd_reset_n>;
> + pinctrl-1 = <&wcd_reset_n_sleep>;
> + reset-gpios = <&tlmm 83 0>;
> + vdd-buck-supply = <&vreg_l17b_1p8>;
> + vdd-rxtx-supply = <&vreg_l18b_1p8>;
> + vdd-px-supply = <&vreg_l18b_1p8>;
> + vdd-mic-bias-supply = <&vreg_bob>;
> + qcom,micbias1-microvolt = <1800000>;
> + qcom,micbias2-microvolt = <1800000>;
> + qcom,micbias3-microvolt = <1800000>;
> + qcom,rx-device = <&wcd937x_rx>;
> + qcom,tx-device = <&wcd937x_tx>;
> + #sound-dai-cells = <1>;
> + };
> +
> + /* ... */
> +
> + soundwire@3210000 {
> + #address-cells = <2>;

Drop this and other nodes.

Best regards,
Krzysztof