On 15 November 2017 16:43, alexander.levin@xxxxxxxxxxx wrote: > On Wed, Nov 15, 2017 at 12:19:18PM +0000, Mark Brown wrote: > >On Wed, Nov 15, 2017 at 02:45:42AM +0000, alexander.levin@xxxxxxxxxxx wrote: > > > >> This patch updates the AIF_OUT widget to set the DAI output pin of > >> the device as high impedance when not in use. > > > >This will leave the line floating which EEs don't always like. It's > >probably OK and hasn't lead to any reports in mainline yet but still... > > The idea I got from the patch is that output will not be working if > there are multiple codecs? Yes, if there are multiple codecs sharing the same DAI line for capture as DA7217/8, and we don't set this to high impedance, then it will interfere with the other codecs' capture data.