On Wed, 16 Feb 2022, Ricard Wanderlöf wrote: > When adding codecs to a card, all the controls of each individual codec > are visible as controls for the complete card. But how does one handle the > case of multiple codecs of the same type, for instance two identical > codecs being used in TDM mode to create a multi channel card? Is there > some method for resolving the fact that the control names naturally > conflict? After not too much digging, I found the sound-name-prefix property which when added to the actual codec device node resolves this issue. However, I'm still failing to get the following configuration to work: I've got two stereo codecs connected to the same DAI, in order to provide 4 channel operation. Is this something that should be possible to configure using simple-card, or do I need to write my own machine driver? As I understand, the configuration as such is supported by ALSA since a while back. /Ricard -- Ricard Wolf Wanderlof ricardw(at)axis.com Axis Communications AB, Lund, Sweden www.axis.com Phone +46 46 272 2016 Fax +46 46 13 61 30