root@amlogic:~# aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
pulse
PulseAudio Sound Server
default:CARD=AMLM8AUDIO
AML-M8AUDIO,
Default Audio Device
sysdefault:CARD=AMLM8AUDIO
AML-M8AUDIO,
Default Audio Device
dmix:CARD=AMLM8AUDIO,DEV=0
AML-M8AUDIO,
Direct sample mixing device
dmix:CARD=AMLM8AUDIO,DEV=1
AML-M8AUDIO,
Direct sample mixing device
dmix:CARD=AMLM8AUDIO,DEV=2
AML-M8AUDIO,
Direct sample mixing device
dsnoop:CARD=AMLM8AUDIO,DEV=0
AML-M8AUDIO,
Direct sample snooping device
dsnoop:CARD=AMLM8AUDIO,DEV=1
AML-M8AUDIO,
Direct sample snooping device
dsnoop:CARD=AMLM8AUDIO,DEV=2
AML-M8AUDIO,
Direct sample snooping device
hw:CARD=AMLM8AUDIO,DEV=0
AML-M8AUDIO,
Direct hardware device without any conversions
hw:CARD=AMLM8AUDIO,DEV=1
AML-M8AUDIO,
Direct hardware device without any conversions
hw:CARD=AMLM8AUDIO,DEV=2
AML-M8AUDIO,
Direct hardware device without any conversions
plughw:CARD=AMLM8AUDIO,DEV=0
AML-M8AUDIO,
Hardware device with all software conversions
plughw:CARD=AMLM8AUDIO,DEV=1
AML-M8AUDIO,
Hardware device with all software conversions
plughw:CARD=AMLM8AUDIO,DEV=2
AML-M8AUDIO,
Hardware device with all software conversions