本文转载自：http://blog.csdn.net/kris_fei/article/details/78399875
Platform: RK3288
OS: Android 6.0
Kernel: 3.10.92
方法一：
root@rk3288:/proc/asound/card0 # cat /proc/asound/cards
0 [RKRT5631 ]: RK_RT5631 - RK_RT5631
RK_RT5631
方法二：
root@rk3288:/data # ls -l /dev/snd/*
crw-rw—- system audio 116, 0 2017-01-05 03:13 controlC0
crw-rw—- system audio 116, 24 2017-01-05 03:13 pcmC0D0c
crw-rw—- system audio 116, 16 2017-01-05 03:13 pcmC0D0p
crw-rw—- system audio 116, 33 2017-01-05 03:13 timer
方法三：
开机log
[ 2.239671] ALSA device list:
[ 2.239682] #0: RK_RT5631