On Wed, Oct 9, 2019 at 3:18 AM Kuninori Morimoto kuninori.morimoto.gx@renesas.com 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-CodecSo, 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
One more question: How would you describe in the DTS this scenario. Is this, correct?
machine_drv { compatible = "simple-card";
simple-audio-card,dai-link@0 { cpu { sound-dai=<&cpu0>; } codec { sound-dai=<&Codec0>; } }
simple-audio-card,dai-link@1 { cpu { sound-dai=<&cpu3>; } codec { sound-dai=<&Codec2>; } }
simple-audio-card,dai-link@2 { cpu { sound-dai=<&cpu1>; } }
simple-audio-card,dai-link@3 { cpu { sound-dai=<&cpu2>; } }
simple-audio-card,dai-link@4{ cpu { sound-dai=<&Codec1>; } } };