* TLV320AIC3104: tlv320aic3104 #kernel #yocto
@ 2021-06-21 5:01 Amrun Nisha.R
2021-06-21 8:38 ` [yocto] " Alexandre Belloni
0 siblings, 1 reply; 3+ messages in thread
From: Amrun Nisha.R @ 2021-06-21 5:01 UTC (permalink / raw)
To: yocto
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Hi,
I am using tlv320aic3104 in one of my project, The hardware is wired in such a way that the I2C lines from tlv320aic3104 is connected to a separate microprocessor which performs the init.
The SAI lines of tlv320aic3104 are connected to IMX8M SAI lines, I am running linux in IMX8M. ALSA says no sound cards found.
I would like to know whether this kind of setup where the i2c is used by a separate processor and using the SAI lines in a different device that runs linux will work. Kindly advice
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [yocto] TLV320AIC3104: tlv320aic3104 #kernel #yocto
2021-06-21 5:01 TLV320AIC3104: tlv320aic3104 #kernel #yocto Amrun Nisha.R
@ 2021-06-21 8:38 ` Alexandre Belloni
2021-06-25 5:01 ` Amrun Nisha.R
0 siblings, 1 reply; 3+ messages in thread
From: Alexandre Belloni @ 2021-06-21 8:38 UTC (permalink / raw)
To: Amrun Nisha.R; +Cc: yocto
Hello,
On 20/06/2021 22:01:48-0700, Amrun Nisha.R wrote:
> Hi,
>
> I am using tlv320aic3104 in one of my project, The hardware is wired
> in such a way that the I2C lines from tlv320aic3104 is connected to a
> separate microprocessor which performs the init.
>
> The SAI lines of tlv320aic3104 are connected to IMX8M SAI lines, I am
> running linux in IMX8M. ALSA says no sound cards found.
>
> I would like to know whether this kind of setup where the i2c is used
> by a separate processor and using the SAI lines in a different device
> that runs linux will work. Kindly advice
To support that, you will have to write your own card driver or at least
write a device tree sound node with a dummy codec as Linux will not be
configuring it.
See https://bootlin.com/pub/conferences/2020/lee/belloni-alsa-asoc/belloni-alsa-asoc.pdf
--
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: TLV320AIC3104: tlv320aic3104 #kernel #yocto
2021-06-21 8:38 ` [yocto] " Alexandre Belloni
@ 2021-06-25 5:01 ` Amrun Nisha.R
0 siblings, 0 replies; 3+ messages in thread
From: Amrun Nisha.R @ 2021-06-25 5:01 UTC (permalink / raw)
To: yocto
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Hi Alexandre,
Thanks for your guidance. I have updated my device tree with dummy codec as linux. Still the sound card is not properly added. When i tried to verify that using aplay, i got error message as "no sound card is found". Kindly advice.
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2021-06-21 5:01 TLV320AIC3104: tlv320aic3104 #kernel #yocto Amrun Nisha.R
2021-06-21 8:38 ` [yocto] " Alexandre Belloni
2021-06-25 5:01 ` Amrun Nisha.R
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