Add sof-{ptl,lnl,arl}-sn624x.tplg for Senary SN624x SDCA SoundWire

[wangxiaohu2026]

Problem

Intel sof-soundwire machine match for Senary SN624x requests named
topology files such as:

• sof-ptl-sn624x.tplg
• sof-lnl-sn624x.tplg
• sof-arl-sn624x.tplg

(Kernel ACPI entries now in ASoC for-7.4.)

If the named file is missing, SOF probe fails with -ENOENT and there
is no sound card, even though runtime may later use function topologies
(sof-sdca-*.tplg).

Kernel status

SN624x SDCA series applied to broonie/sound for-7.4:

• https://git.kernel.org/broonie/sound/c/12d9c9f8679c
• https://git.kernel.org/broonie/sound/c/77272ecd96d7
• https://git.kernel.org/broonie/sound/c/32f9c551a91a

Relevant sof_tplg_filename values:

• ARL: sof-arl-sn624x.tplg
• LNL: sof-lnl-sn624x.tplg
• PTL: sof-ptl-sn624x.tplg
• MTL: sof-mtl-sn624x.tplg (not included in this drop yet)

Hardware / validation

• Platform: Intel Panther Lake / Wildcat Lake (Positivo), sof-soundwire
• Codec: SN624x SDCA SoundWire (e.g. part_id 0x6244, sdw:m0496p6244v03c01)
• Removing sof-ptl-sn624x.tplg → probe looks up the named file, fails (sof_probe_work failed err: -2), no card
• Restoring it → card works; dmesg shows:
  • Using function topologies instead …/sof-ptl-sn624x.tplg
  • then loads sof-sdca-jack-id0.tplg, sof-sdca-1amp-id2.tplg, sof-sdca-mic-id4.tplg

Related userspace

ALSA UCM PR (jack/speaker/dmic): alsa-project/alsa-ucm-conf#849

Request

Please advise preferred path:

1. Add topology source / build rules in this repo to generate the named
   sof-*-sn624x.tplg files, and/or
2. Accept binary placement for sof-bin / linux-firmware packaging

I can attach binaries for ARL/LNL/PTL named files and follow up with a PR
once the preferred layout is clear.

Filenames must not use a -2ch suffix (kernel match uses
sof-arl-sn624x.tplg).

Attachments

• sof-ptl-sn624x.tplg
• sof-lnl-sn624x.tplg
• sof-arl-sn624x.tplg
• SHA256SUMS.txt

Note: the three attached binaries are currently byte-identical named
stubs used so probe can find the ACPI default filename; runtime then
switches to SDCA function topologies. Happy to replace with properly
built per-platform topologies if that is preferred.

sn624x-sof-tplg-attachments.zip