Resolved! what is the "routing" for the Sound card identified as STM32MP15DK in ALSA ?
sound { compatible = "audio-graph-card"; label = "STM32MP15-DK"; /* Sound card identified as STM32MP15DK in ALSA */ routing = "Playback" , "MCLK", "Capture" , "MCLK", "MICL" , "Mic Bias"; dais = <&sai2a_port &sai2b_port &i2s2_port>; stat...