linux-kernel - Re: [PATCH 05/10] ASoC: qcom: q6dsp: add support for LPASS LPI MI2S dais

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Message-ID: <8f61563d-8875-4aaa-b94f-1866454367aa@oss.qualcomm.com>
Date: Fri, 6 Feb 2026 05:02:11 -0500
From: Srinivas Kandagatla <srinivas.kandagatla@....qualcomm.com>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: broonie@...nel.org, lgirdwood@...il.com, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, srini@...nel.org,
        perex@...ex.cz, tiwai@...e.com, alexey.klimov@...aro.org,
        mohammad.rafi.shaik@....qualcomm.com, quic_wcheng@...cinc.com,
        johan@...nel.org, dmitry.baryshkov@....qualcomm.com,
        konrad.dybcio@....qualcomm.com, linux-arm-msm@...r.kernel.org,
        linux-sound@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/10] ASoC: qcom: q6dsp: add support for LPASS LPI MI2S
 dais

On 2/6/26 3:00 AM, Krzysztof Kozlowski wrote:
> On Thu, Feb 05, 2026 at 12:14:06PM -0500, Srinivas Kandagatla wrote:
>> Add new dai ids and dai driver entries ior LPASS LPI MI2S lines
>>
>> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@....qualcomm.com>
>> ---
>>  .../sound/qcom,q6dsp-lpass-ports.h            | 12 ++++-
>>  sound/soc/qcom/qdsp6/q6dsp-lpass-ports.c      | 47 +++++++++++++++++++
>>  2 files changed, 58 insertions(+), 1 deletion(-)
>>
> 
> It's impossible to reply via korg - wrong address of Conor...
> 
>> diff --git a/include/dt-bindings/sound/qcom,q6dsp-lpass-ports.h b/include/dt-bindings/sound/qcom,q6dsp-lpass-ports.h
>> index 609bc278f726..0febc641f351 100644
>> --- a/include/dt-bindings/sound/qcom,q6dsp-lpass-ports.h
>> +++ b/include/dt-bindings/sound/qcom,q6dsp-lpass-ports.h
>> @@ -140,7 +140,17 @@
>>  #define DISPLAY_PORT_RX_6	134
>>  #define DISPLAY_PORT_RX_7	135
>>  #define USB_RX			136
>> -#define LPASS_MAX_PORT		(USB_RX + 1)
>> +#define	LPI_MI2S_RX_0		137
> 
> Odd indentation appeared.
> 

>> +#define	LPI_MI2S_TX_0		138
>> +#define	LPI_MI2S_RX_1		139
>> +#define	LPI_MI2S_TX_1		140
>> +#define	LPI_MI2S_RX_2		141
>> +#define	LPI_MI2S_TX_2		142
>> +#define	LPI_MI2S_RX_3		143
>> +#define	LPI_MI2S_TX_3		144
>> +#define	LPI_MI2S_RX_4		145
>> +#define	LPI_MI2S_TX_4		146
>> +#define	LPASS_MAX_PORT		(LPI_MI2S_TX_4 + 1)
> 
> Confusing change or actual proof that my previous comments for similar
> patch are valid:
> 1. not a binding> or
> 2. you cannot change this, because you break ABI.
> Choose only one from these options.
Is this because the max port keeps changing?, I can try to see how this
can be dealt within the drivers in next version without adding
LPASS_MAX_PORT to bindings.

--srini
> 
> Drop.
> 
> Best regards,
> Krzysztof
>