FM Tuner interface

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FM Tuner interface

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Contributor I

I am looking for interface between si4731 -DEMO board with imx8m-mini development board. I think i have to add device driver for si4731 I2S integration part. I saw there is a kernel support for SI476x series codec from Silicon Lab, but couldn't find any reference for SI4731 tuner.

Please guide me for this integration. I want to read Tuner data through I2S interface on iMX8M mini board.

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Contributor I

Hello,

I am looking for some guidance/ reference for the compilation of device tree file.

I modify the device tree file (path - tmp/work-shared/imx8mm-var-dart/kernel-source/arch/arm64/boot/dts/freescale) and tried to update the the image. But i am not able to see the changes reflected in the final image.

Steps I followed -

update some values in device tree file.

      bitbake -c devshell virtual/kernel

      make dtbs

      bitbake -c deploy -f virtual/kernel

But the changes are not consistent.

Is this the correct flow.? Please provide the good reference for the same.

Thank you in advance.!

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NXP TechSupport
NXP TechSupport
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NXP TechSupport
NXP TechSupport

Hi Malay

one can look at linux tuner drivers documentation

https://kernel.readthedocs.io/en/latest/media/v4l-drivers/tuners.html 

and Porting Guide included in NXP Linux documentation

i.MX Software | NXP 


Best regards
igor
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Contributor I

Hi igor,

Thank you for your reply.

So, my understanding is correct right ?

I have to write a new driver for the SI4731 Tuner interface.

The link you have shared doesn't provide any detail for the specific tuner

SI4731 from Silicon Lab.

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NXP TechSupport
NXP TechSupport

Hi Malay

 

right, it is necessary to write SI4731 driver.


Best regards
igor

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