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Date: Sun, 19 May 2024 20:00:07 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Mohammad Rafi Shaik <quic_mohs@...cinc.com>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
Banajit Goswami <bgoswami@...cinc.com>, Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
<conor+dt@...nel.org>, Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>
Cc: alsa-devel@...a-project.org, linux-arm-msm@...r.kernel.org,
linux-sound@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, quic_rohkumar@...cinc.com,
quic_pkumpatl@...cinc.com
Subject: Re: [PATCH v4 1/7] ASoC: dt-bindings: document wcd937x Audio Codec
On 16/05/2024 06:47, Mohammad Rafi Shaik wrote:
> From: Prasad Kumpatla <quic_pkumpatl@...cinc.com>
>
> Document the Qualcomm WCD9370/WCD9375 Audio Codec and the
> Soundwire devices than can be found on Qualcomm QCM6490 based platforms.
>
> The Qualcomm WCD9370/WCD9375 Audio Codec communicates
Thank you for your patch. There is something to discuss/improve.
> +
> + qcom,tx-port-mapping:
> + description: |
> + Specifies static port mapping between device and host tx ports.
> + In the order of the device port index which are adc1_port, adc23_port,
> + dmic03_mbhc_port, dmic46_port.
> + Supports maximum 4 tx soundwire ports.
> +
> + WCD9370 TX Port 1 (ADC1) <=> SWR2 Port 2
> + WCD9370 TX Port 2 (ADC2, 3) <=> SWR2 Port 2
> + WCD9370 TX Port 3 (DMIC0,1,2,3 & MBHC) <=> SWR2 Port 3
> + WCD9370 TX Port 4 (DMIC4,5,6,7) <=> SWR2 Port 4
> +
> + $ref: /schemas/types.yaml#/definitions/uint32-array
> + minItems: 4
> + maxItems: 4
> + items:
> + oneOf:
oneOf here is not needed. Previously used enum should be fine.
> + - minimum: 1
> + maximum: 4
> +
> + qcom,rx-port-mapping:
> + description: |
> + Specifies static port mapping between device and host rx ports.
> + In the order of device port index which are hph_port, clsh_port,
> + comp_port, lo_port, dsd port.
> + Supports maximum 5 rx soundwire ports.
> +
> + WCD9370 RX Port 1 (HPH_L/R) <==> SWR1 Port 1 (HPH_L/R)
> + WCD9370 RX Port 2 (CLSH) <==> SWR1 Port 2 (CLSH)
> + WCD9370 RX Port 3 (COMP_L/R) <==> SWR1 Port 3 (COMP_L/R)
> + WCD9370 RX Port 4 (LO) <==> SWR1 Port 4 (LO)
> + WCD9370 RX Port 5 (DSD_L/R) <==> SWR1 Port 5 (DSD)
> +
> + $ref: /schemas/types.yaml#/definitions/uint32-array
> + minItems: 5
> + maxItems: 5
> + items:
> + oneOf:
Again, no need for oneof.
> + - minimum: 1
> + maximum: 5
> +
> +required:
> + - compatible
> + - reg
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + soundwire@...0000 {
> + reg = <0x03210000 0x2000>;
> + #address-cells = <2>;
> + #size-cells = <0>;
> + wcd937x_rx: codec@0,4 {
> + compatible = "sdw20217010a00";
> + reg = <0 4>;
> + qcom,rx-port-mapping = <1 2 3 4 5>;
> + };
> + };
> +
> + soundwire@...0000 {
> + reg = <0x03230000 0x2000>;
> + #address-cells = <2>;
> + #size-cells = <0>;
> + wcd937x_tx: codec@0,3 {
> + compatible = "sdw20217010a00";
> + reg = <0 3>;
> + qcom,tx-port-mapping = <2 2 3 4>;
> + };
> + };
> +
> +...
> diff --git a/Documentation/devicetree/bindings/sound/qcom,wcd937x.yaml b/Documentation/devicetree/bindings/sound/qcom,wcd937x.yaml
> new file mode 100644
> index 000000000000..5c76083691ea
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/qcom,wcd937x.yaml
> @@ -0,0 +1,80 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/qcom,wcd937x.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm WCD9370/WCD9375 Audio Codec
> +
> +maintainers:
> + - Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> +
> +description:
> + Qualcomm WCD9370/WCD9375 Codec is a standalone Hi-Fi audio codec IC.
> + It has RX and TX Soundwire slave devices.
> +
> +allOf:
> + - $ref: dai-common.yaml#
> + - $ref: qcom,wcd93xx-common.yaml#
> +
> +properties:
> + compatible:
> + oneOf:
> + - const: qcom,wcd9370-codec
> + - items:
> + - const: qcom,wcd9375-codec
> + - const: qcom,wcd9370-codec
> +
> + vdd-px-supply:
> + description: A reference to the 1.8V I/O supply
> +
> +required:
> + - compatible
I guess VDDPX is not really optional in the hardware is it?
> +
> +unevaluatedProperties: false
> +
> +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>;
Use defines for common/known flags, like GPIO flags.
> + 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,micbias4-microvolt = <1800000>;
> + qcom,rx-device = <&wcd937x_rx>;
> + qcom,tx-device = <&wcd937x_tx>;
> + #sound-dai-cells = <1>;
> + };
> +
> + /* ... */
> +
> + soundwire@...0000 {
> + reg = <0x03210000 0x2000>;
> + #address-cells = <2>;
> + #size-cells = <0>;
> + wcd937x_rx: codec@0,4 {
> + compatible = "sdw20217010a00";
> + reg = <0 4>;
Just one space goes before =
This applies to all places.
> + qcom,rx-port-mapping = <1 2 3 4 5>;
> + };
> + };
> +
> + soundwire@...0000 {
> + reg = <0x03230000 0x2000>;
> + #address-cells = <2>;
> + #size-cells = <0>;
> + wcd937x_tx: codec@0,3 {
> + compatible = "sdw20217010a00";
> + reg = <0 3>;
Best regards,
Krzysztof
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