linux-kernel - Re: [PATCH v3 3/3] ASoC: qcom: sc8280xp: Fix DAI format setting for MI2S interfaces

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Message-ID: <eaa235f2-b6be-46e9-bee2-1a4818736d42@oss.qualcomm.com>
Date: Sun, 7 Sep 2025 18:18:03 +0530
From: Mohammad Rafi Shaik <mohammad.rafi.shaik@....qualcomm.com>
To: Srinivas Kandagatla <srinivas.kandagatla@....qualcomm.com>,
        Srinivas Kandagatla <srini@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.dev>
Cc: linux-sound@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        kernel@....qualcomm.com, prasad.kumpatla@....qualcomm.com,
        ajay.nandam@....qualcomm.com
Subject: Re: [PATCH v3 3/3] ASoC: qcom: sc8280xp: Fix DAI format setting for
 MI2S interfaces



On 9/7/2025 3:30 PM, Srinivas Kandagatla wrote:
> On 9/5/25 4:04 PM, Mohammad Rafi Shaik wrote:
>> The current implementation does not configure the CPU DAI format for
>> MI2S interfaces, resulting in -EIO errors during audio playback and
>> capture. This prevents the correct clock from being enabled for the
>> MI2S interface. Configure the required DAI format to enable proper
>> clock settings. Tested on Lemans evk platform.
>>
>> Fixes: 295aeea6646ad ("ASoC: qcom: add machine driver for sc8280xp")
> 
> Am really not sure if this is a fix, because sc8280xp does not have any
> Mi2S support. If you have added support for MI2S on any other platform
> that uses sc8280xp machine driver, then that is the right fixes tag.
> 

ACK.

You're right, thanks for the clarification.

I'll update the patch based on the inputs provided.

Thanks & Regards,
Rafi.

> --srini
>> Cc: <stable@...r.kernel.org>
>> Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@....qualcomm.com>
>> Signed-off-by: Mohammad Rafi Shaik <mohammad.rafi.shaik@....qualcomm.com>
>> ---
>>   sound/soc/qcom/sc8280xp.c | 4 ++++
>>   1 file changed, 4 insertions(+)
>>
>> diff --git a/sound/soc/qcom/sc8280xp.c b/sound/soc/qcom/sc8280xp.c
>> index 73f9f82c4e25..3067b95bcdbb 100644
>> --- a/sound/soc/qcom/sc8280xp.c
>> +++ b/sound/soc/qcom/sc8280xp.c
>> @@ -32,6 +32,10 @@ static int sc8280xp_snd_init(struct snd_soc_pcm_runtime *rtd)
>>   	int dp_pcm_id = 0;
>>   
>>   	switch (cpu_dai->id) {
>> +	case PRIMARY_MI2S_RX...QUATERNARY_MI2S_TX:
>> +	case QUINARY_MI2S_RX...QUINARY_MI2S_TX:
>> +		snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_BP_FP);
>> +		break;
>>   	case WSA_CODEC_DMA_RX_0:
>>   	case WSA_CODEC_DMA_RX_1:
>>   		/*
>