Hi Jerome > Fragment is here: (snip) > I'll continue to check but this is apparently related to the options > turned on by the debug fragment. Maybe it could be interesting to check > another non-intel SoC manufacturer using DPCM with this fragment ? > (another device relying on cleared ch_maps - Renesas and/or MTK maybe ?) I tryed to add your debug fragment into my normal defconfig. The kernel size indeed become very huge, and boot process becomes slow, but kernel start works, and DPCM test could work for me. I tested on v6.8 Kernel and Renesas ULCB-KF board with DPCM sound settings, and with ${LINUX}/sound/soc/generic/audio-graph-card2-custom-sample.dtsi which is using Multi-CPU/Codec, DPCM, Codec2Codec, etc. Thank you for your help !! Best regards --- Renesas Electronics Ph.D. Kuninori Morimoto