Hi Jiada Thank you for your feedback I understand your situation > We have enabled TDM Split and Ex-Split mode in our kernel, > and SSI(U)'s dma address diffs based on the BUSIF it is using, > so have a single dma data struct per rsnd_ssi will cause issue when > SSI isn't working with BUSIF0. First of all, "TDM (Ex) Split mode" is not yet supported. And unfortunately, your patch is not enough for it. I guess you enabled it with many local patches, and posted one of them ? It is very advanced feature, we need to consider about channel/sampling rate/data width/settings/address etc etc etc... Lots of things we need to solve/care ! DMA pointer is one of them. If we focus only to DMA, your patch is still wrong I think. "Playback/Capture direction" is not related to this topic. 1 DMA on 1 DAI is enough ? And we need to update rsnd_gen2_dma_addr() too for DMA address. > Do you have any suggestion to address this issue? I have no idea at this point. Missing part for TDM (Ex) Split mode is not only DMA pointer. Why do you want to use it ? If you want to do is only "use 2 DAIs for playback", how about to use MIXer ? It is already supported on upstream. Best regards --- Kuninori Morimoto _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
