linux-kernel - Re: [PATCH v4 3/3] arm64: dts: qcom: sc8280xp-x13s: Add soundcard support

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Date:   Mon, 28 Nov 2022 13:58:06 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        agross@...nel.org, andersson@...nel.org
Cc:     konrad.dybcio@...ainline.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: Re: [PATCH v4 3/3] arm64: dts: qcom: sc8280xp-x13s: Add soundcard
 support

On 28/11/2022 13:44, Krzysztof Kozlowski wrote:
> On 23/11/2022 11:43, Srinivas Kandagatla wrote:
>> +
>> +&swr1 {
>> +	status = "okay";
>> +
>> +	wcd_rx: wcd9380-rx@0,4 {
>> +		compatible = "sdw20217010d00";
>> +		reg = <0 4>;
>> +		qcom,rx-port-mapping = <1 2 3 4 5>;
>> +	};
>> +};
>> +
>> +&swr2 {
>> +	status = "okay";
>> +
>> +	wcd_tx: wcd9380-tx@0,3 {
>> +		compatible = "sdw20217010d00";
>> +		reg = <0 3>;
>> +		qcom,tx-port-mapping = <1 1 2 3>;
> 
> I think I solved my head-phones one-channel problem.
> This should be <1 2 3> and in DTSI:
> qcom,din-ports = <3>;
> 
> The downstream waipio-audio-overlay.dtsi says:
> 
>  56                         qcom,swr-port-mapping = <1 SWRM_TX1_CH1 0x1>,
>  57                                 <1 SWRM_TX1_CH2 0x2>,
>  58                                 <1 SWRM_TX1_CH3 0x4>, <1 SWRM_TX1_CH4 0x8>,
>  59                                 <2 SWRM_TX2_CH1 0x1>, <2 SWRM_TX2_CH2 0x2>,
>  60                                 <2 SWRM_TX2_CH3 0x4>, <2 SWRM_TX2_CH4 0x8>,
>  61                                 <3 SWRM_TX3_CH1 0x1>, <3 SWRM_TX3_CH2 0x2>,
>  62                                 <3 SWRM_TX3_CH3 0x4>, <3 SWRM_TX3_CH4 0x8>;
> 
> I just don't know what how to trim the port config properties - we
> have there four entries, but channels are only three?
> 
> Where do these come from? The downstream:
> asoc/waipio-port-config.h / lahaina-port-config.h
> Do do not have port config for this SWR.

Eh, not sure anymore. My second headphone started to work without these
changes, so I have no clue.

Best regards,
Krzysztof