Hi all, For uni-directional dai links there are these fields of snd_soc_dai_link: * playback_only * capture_only But what about bi-directional DAI links? Is it safe to assume that if playback_only = 0 and capture_only = 0 then the link is bi-directional? We need this in sound/soc/soc-core.c: soc_check_tplg_fes where a non-DPCM link is converted to a BE DPCM and we need to inherit the directions supported. For reference see: https://github.com/thesofproject/linux/pull/2143 thanks, Daniel.