On Wed, Oct 9, 2019 at 3:18 AM Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx> wrote: > > > Hi Daniel > > > > * ex1) > > > * CPU0 --- Codec0 > > > * CPU1 --- Codec1 > > > * CPU2 -----/ > > > * CPU3 --- Codec2 > > > * > > > * => 5 links = 2xCPU-Codec + 2xCPU-dummy + 1xdummy-Codec > > > * => 7 DAIs = 4xCPU + 3xCodec > > > * => 1 ccnf = 1xdummy-Codec > > > > > > > > > So, I don't understand exactly how did you get the formula for links. AFAICT > > > there should be 3 x CPU-Codec + 1 x CPU-dummy. > > CPU1/CPU2 and Codec1 are using DPCM. > Thus, it is... > > 2xCPU-Codec: > CPU0 - Codec0 > CPU3 - Codec2 > > 2xCPU-dummy: > CPU1 - dummy > CPU2 - dummy > > 1xdummy-Codec: > dummy - Codec1 > > > > Also, I wonder how can i use simple-card to create just a backend link > > CPU-dummy + Codec :). > > > > Is this supported? > > Do you mean CPU-dummy + dummy-Codec ? > But anyway, simple-card/audio-graph DPCM support is very limited. > Unfortunately it doesn't have flexibility... Yes, exactly. I need 1 DAI link with 1 FE + 1 BE for DSP / SOF usecase. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
