For people with exact Yoga 9 14IAP7 machine is not necessary to include /etc/modprobe.d/snd.conf. The module is in the new kernel.
For those with different machine that want to try it,  can use the snd.conf at first then if you want to have the mic working you might have to patch the kernel with your machine model.
I have an example of patch in my github
https://github.com/322sirc/linux-16IAP7/blob/main/0007-ALSA-hda-realtek-Add-quirk-for-Yoga-devices.patch

On Sat, Aug 20, 2022 at 3:12 PM <bugzilla-daemon@kernel.org> wrote:
https://bugzilla.kernel.org/show_bug.cgi?id=208555

--- Comment #680 from Jaroslav Kysela (perex@perex.cz) ---
Remove 'options snd_intel_dspcfg dsp_driver=1' and replace the second options
line as 'options snd-sof-intel-hda-common hda_model=alc287-yoga9-bass-spk-pin'
to get the full (including microphone) support.

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