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SubjectRe: [PATCH v4 3/3] arm64: dts: qcom: sc8280xp-x13s: Add soundcard support
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On 28/11/2022 12:58, Krzysztof Kozlowski wrote:
> 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>;

WCD938x TX device has 4 SoundWire ports and LPASS TX macro SoundWire
Master has 3 ports this mapping qcom,tx-port-mapping = <1 1 2 3>;
defines how wcd device SoundWire ports are connected to SoundWire Master
port.


>>
>> 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.

yes, that along with dts is the source for this information.

--srini
>
> Eh, not sure anymore. My second headphone started to work without these
> changes, so I have no clue.
>
> Best regards,
> Krzysztof
>

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