You can place the required default settings in 00-tegra.conf file. Some default controls are already present depending on the sound card/platform. Does this not work for you?
rootfs/usr/share/alsa/init/postinit/00-tegra.conf
You can place the required default settings in 00-tegra.conf file. Some default controls are already present depending on the sound card/platform. Does this not work for you?
rootfs/usr/share/alsa/init/postinit/00-tegra.conf