linux-kernel - Re: [PATCH v4 1/9] ASoC: dt-bindings: wcd938x: add bindings for wcd938x

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Message-ID: <019aa3c0-56ce-de17-4d64-be6dbc0a3a65@linaro.org>
Date:   Thu, 15 Apr 2021 18:06:48 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Rob Herring <robh@...nel.org>
Cc:     broonie@...nel.org, devicetree@...r.kernel.org, perex@...ex.cz,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        lgirdwood@...il.com
Subject: Re: [PATCH v4 1/9] ASoC: dt-bindings: wcd938x: add bindings for
 wcd938x



On 15/04/2021 17:29, Rob Herring wrote:
>> +    codec {
>> +        compatible = "qcom,wcd9380-codec";
>> +        reset-gpios = <&tlmm 32 0>;
>> +        #sound-dai-cells = <1>;
>> +        qcom,tx-device = <&wcd938x_tx>;
>> +        qcom,rx-device = <&wcd938x_rx>;
>> +        qcom,micbias1-microvolt = <1800000>;
>> +        qcom,micbias2-microvolt = <1800000>;
>> +        qcom,micbias3-microvolt = <1800000>;
>> +        qcom,micbias4-microvolt = <1800000>;
>> +        qcom,mbhc-hphl-switch;
>> +        qcom,mbhc-ground-switch;
>> +        qcom,mbhc-button0-vthreshold-microvolt = <75000>;
>> +        qcom,mbhc-button1-vthreshold-microvolt = <150000>;
>> +        qcom,mbhc-button2-vthreshold-microvolt = <237000>;
>> +        qcom,mbhc-button3-vthreshold-microvolt = <500000>;
>> +        qcom,mbhc-button5-vthreshold-microvolt = <500000>;
>> +        qcom,mbhc-button6-vthreshold-microvolt = <500000>;
>> +        qcom,mbhc-button7-vthreshold-microvolt = <500000>;
>> +    };
>> +
>> +    /* ... */
>> +
>> +    soundwire@...0000 {
>> +        #address-cells = <2>;
>> +        #size-cells = <0>;
>> +        reg = <0x03230000 0x2000>;
>> +        wcd938x_tx: codec@0,3 {
>> +            compatible = "sdw20217010d00";
>> +            reg  = <0 3>;
>> +            qcom,direction = "tx";
>> +            qcom,port-mapping = <2 3 4 5>;
>> +        };
>> +
>> +        wcd938x_rx: codec@0,4 {
>> +            compatible = "sdw20217010d00";
>> +            reg  = <0 4>;
>> +            qcom,direction = "rx";
>> +            qcom,port-mapping = <1 2 3 4 5>;
>> +        };

> This is a single device, right? We shouldn't need 3 nodes to describe

Just realized that the example is bit misleading here.
It should look like:

  codec {
         compatible = "qcom,wcd9380-codec";
         reset-gpios = <&tlmm 32 0>;
         #sound-dai-cells = <1>;
         qcom,tx-device = <&wcd938x_tx>;
         qcom,rx-device = <&wcd938x_rx>;
         qcom,micbias1-microvolt = <1800000>;
         qcom,micbias2-microvolt = <1800000>;
         qcom,micbias3-microvolt = <1800000>;
         qcom,micbias4-microvolt = <1800000>;
         qcom,mbhc-hphl-switch;
         qcom,mbhc-ground-switch;
         qcom,mbhc-button0-vthreshold-microvolt = <75000>;
         qcom,mbhc-button1-vthreshold-microvolt = <150000>;
         qcom,mbhc-button2-vthreshold-microvolt = <237000>;
         qcom,mbhc-button3-vthreshold-microvolt = <500000>;
         qcom,mbhc-button5-vthreshold-microvolt = <500000>;
         qcom,mbhc-button6-vthreshold-microvolt = <500000>;
         qcom,mbhc-button7-vthreshold-microvolt = <500000>;
     };


soundwire-controller@...0000 {
	reg = <0 0x3230000 0 0x2000>;
	compatible = "qcom,soundwire-v1.5.1";
	wcd938x_tx: codec@0,3 {
		compatible = "sdw20217010d00";
		reg  = <0 3>;
		qcom,direction = "tx";
		qcom,port-mapping = <2 3 4 5>;
	};
};


soundwire-controller@...0000 {
	reg = <0 0x3210000 0 0x2000>;
	compatible = "qcom,soundwire-v1.5.1";
	 wcd938x_rx: codec@0,4 {
		compatible = "sdw20217010d00";
		reg  = <0 4>;
		qcom,direction = "rx";
		qcom,port-mapping = <1 2 3 4 5>;
	};
};


--srini