Hi Guillaume
Thank you for your reporting
Please see the bisection report below about the asoc-simple-card driver failing to probe on kontron-sl28-var3-ads2 in today's broonie-sound tree. I believe this has not reached linux-next yet.
Reports aren't automatically sent to the public while we're trialing new bisection features on kernelci.org but this one looks valid.
20:22:15.060525 <4>[ 9.948821] sysfs: cannot create duplicate filename '/devices/platform/sound/(null)-wm8904-hifi'
Hmm, I couldn't reproduce this.
I'm not 100% sure about kontron-sl28-var3-ads2, but it seems below doesn't have .name, and I think no one add it to sai->cpu_dai_drv.
${LINUX}/sound/soc/fsl/fsl_sai.c :: fsl_sai_dai_template
Maybe it is the reason of naming "(null)" ?
And, if my understanding was correct, it is from fsl-ls1028a.dtsi, and fsl-ls1028a-kontron-sl28-var3-ads2.dts.
If so, all sai1 - sai6 are using "fsl,vf610-sai", all saiX doesn't have .name. I think it should have different name. In your case, at least, sai5 / sai6 needs to have
... sai5: .name = "sai5", sai6: .name = "sai6", ...
Thank you for your help !!
Best regards --- Kuninori Morimoto