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Enabling I2S audio card on ALSA, Debian 11, Linux kernel 5.10, Intel N4100

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Bil59

I'm trying to find a set of guidelines to follow to be able to activate the I2S interface of my audio device.

I'm having the following environment: LattePanda Delta board (Intel N4100, with I2S interface), Debian 11, Linux Kernel 5.11. On my I2S interface, I have plugged a MAX98357A DAC on which are plugged 2 speakers (all the wiring has been thoroughly checked).

The main steps I've been trying so far are the following :

  • Updating/Upgrading Debian
  • Setting the BIOS options to enable I2S (especially I2S port owns I/O transfers)
  • Recompiling the kernel to enable the corresponding (or at least which looked so) configuration
  • Enabling/Disabling modules by editing /etc/modules and blacklist.conf
  • Enabling the Dummy audio interface (but I2S is not enabled either)
  • Reading the specs related to the N4100 CPU to find related information or guidelines (and found nothing)
  • Contacting the LattePanda team for further information (request ignored)

I'm adding this detail: I can flawlessly use my Intel HDA audio card (which works well with HDMI and speakers jack), and which is detected (pacmd list-cards) as soon as the snd_hda_intel module is enabled.

I haven't been able to make it work so far, and I would be really glad to have your recommendations/guidelines, thank you in advance.

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