NXP Semiconductors Layerscape LS1028A BSP - Page 84

Playback channels: Mono
Limits: Playback 0 - 11
Mono: Playback 4 [36%] [-20.00dB] [on]
Simple mixer control 'Headset',0 Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum
Capture channels: Mono
Limits: Capture 0 - 7
Mono: Capture 5 [71%] [0.00dB] [on]
For Example, in above output there are two controls named “PCM” and “Headset” for Speaker and microphone respectively.
Sample Audio controls Usage:
a. mute/unmute
[root@freescale ~]$ amixer -c1 set PCM mute
Simple mixer control 'PCM',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 11
Mono: Playback 2 [18%] [-28.00dB] [off]
[root@freescale ~]$ amixer -c1 set PCM unmute
Simple mixer control 'PCM',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 11
Mono: Playback 2 [18%] [-28.00dB] [on]
b. volume up/down – Below commands are trying to set volume to 11 and 2 performing volume up and down respectively.
root@freescale ~]$ amixer -c1 set PCM 11
Simple mixer control 'PCM',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 11
Mono: Playback 11 [100%] [8.00dB] [on]
[root@freescale ~]$ amixer -c1 set PCM 2
Simple mixer control 'PCM',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 11
Mono: Playback 2 [18%] [-28.00dB] [on]
Ethernet Gadget
To use Ethernet gadget use the following
root@freescale /$ insmod configfs.ko
root@freescale /$ insmod libcomposite.ko
root@freescale /$ insmod u_ether.ko
root@freescale /$ insmod u_rndis.ko
root@freescale /$ insmod usb_f_ecm.ko
root@freescale /$ insmod usb_f_ecm_subset.ko
root@freescale /$ insmod usb_f_rndis.ko
root@freescale /$ insmod g_ether.ko
Linux kernel
Layerscape LS1028A BSP User Guide, Rev. 0.3, 04/2019
84
NXP Semiconductors