Hi
I have BF-537 EZKIT. I would like to use the onboard DAC AD1854. I saw posts people had success using the AD194x driver, but unfortunately nobody has actually documented what needs to be done.
I have compiled an image, (attached .config + .config_custo_linux), but it appears that no sound cards are found
root:/> aplay -l
aplay: device_list:252: no soundcards found...
root:/> ls -l /sys/module/snd/holders
lrwxrwxrwx 1 root root 0 Feb 27 08:45 snd_mixer_oss -> ../../
snd_mixer_oss
lrwxrwxrwx 1 root root 0 Feb 27 08:45 snd_pcm -> ../../snd_pc
m
lrwxrwxrwx 1 root root 0 Feb 27 08:45 snd_pcm_oss -> ../../sn
d_pcm_oss
lrwxrwxrwx 1 root root 0 Feb 27 08:45 snd_soc_core -> ../../s
nd_soc_core
lrwxrwxrwx 1 root root 0 Feb 27 08:45 snd_timer -> ../../snd_
timer
root:/> lsmod|grep '^snd'
snd_soc_ad193x 5841 0
snd_ad1836 1405 0
snd_ad193x 1249 0
snd_soc_core 70987 3 snd_soc_ad193x,snd_ad1836,snd_ad193x
snd_pcm_oss 34734 0
snd_pcm 51416 2 snd_soc_core,snd_pcm_oss
snd_page_alloc 3229 1 snd_pcm
snd_timer 13220 1 snd_pcm
snd_mixer_oss 10711 1 snd_pcm_oss
snd 38588 5 snd_soc_core,snd_pcm_oss,snd_pcm,snd_timer,snd_m
ixer_oss
root:/> ls /dev/snd
timer
oot:/> aplay
ALSA lib confmisc.c:768:(parse_card) cannot find card '0'
ALSA lib conf.c:4241:(_snd_config_evaluate) function snd_func_card_driver return
ed error: No such file or directory
ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
ALSA lib conf.c:4241:(_snd_config_evaluate) function snd_func_concat returned er
ror: No such file or directory
ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name
ALSA lib conf.c:4241:(_snd_config_evaluate) function snd_func_refer returned err
or: No such file or directory
ALSA lib conf.c:4720:(snd_config_expand) Evaluate error: No such file or directo
ry
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM default
aplay: main:682: audio open error: No such file or directory
root:/>
What commands do I need to issue for the system to recognize/load AD194x driver to use it with AD1854 DAC?
Best Regards
Martin
