Hi,
eMMC and HDMI are disabled in uEnv.txt, AUDIO-cape is
enabled:
optargs=quiet drm.debug=7 capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN,BB-BONE-EMMC-2G capemgr.enable_partno=BB-BONE-AUDI-01
To verify this:
beagleboneblack:devices/bone_capemgr.8>cat slots
0: 54:P---L BeagleBone AUDIO CAPE,00A0,Beagleboardtoys,BB-BONE-AUDI-01
1: 55:PF---
2: 56:PF---
3: 57:PF---
4: ff:P-O-- Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
5: ff:P-O-- Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
6: ff:P-O-- Bone-Black-HDMIN,00A0,Texas Instrument,BB-BONELT-HDMIN
The kernel is compiled with the defconfig, the kernel tree is updated
this morning.
Restarting alsa results in no sound card found:
beagleboneblack:/root>/etc/init.d/alsasound restart
* Storing ALSA Mixer Levels ...
!!! alsactl: save_state:1590: No soundcards found... !!!!!!!!!!!!
* Error saving levels. [ !! ]
* Restoring Mixer Levels ...
* No mixer config in /var/lib/alsa/asound.state, you have to unmute your card! [ ok ]
dmesg shows this part:
[ 0.709938] bone-capemgr bone_capemgr.8: loader: before slot-7 BB-BONE-AUDI-01:00A0 (prio 0)
[ 0.709968] bone-capemgr bone_capemgr.8: loader: check slot-7 BB-BONE-AUDI-01:00A0 (prio 0)
[ 0.709997] bone-capemgr bone_capemgr.8: loader: after slot-7 BB-BONE-AUDI-01:00A0 (prio 0)
[ 0.710025] bone-capemgr bone_capemgr.8: slot #7: Requesting part number/version based 'BB-BONE-AUDI-01-00A0.dtbo
[ 0.710055] bone-capemgr bone_capemgr.8: slot #7: Requesting firmware 'BB-BONE-AUDI-01-00A0.dtbo' for board-name 'Override Board Name', version '00A0'
[ 0.710084] bone-capemgr bone_capemgr.8: slot #7: dtbo 'BB-BONE-AUDI-01-00A0.dtbo' loaded; converting to live tree
[ 0.710506] bone-capemgr bone_capemgr.8: slot #7: BB-BONE-AUDI-01 conflict P9.14 (#0:BB-BONE-AUDI-01)
[ 0.720274] bone-capemgr bone_capemgr.8: slot #7: Failed verification
[ 0.727083] bone-capemgr bone_capemgr.8: loader: failed to load slot-7 BB-BONE-AUDI-01:00A0 (prio 0)
Here
http://www.elinux.org/BeagleBone_Black_Capes
https://groups.google.com/forum/?fromgroups=#!searchin/beagleboard/audio$20cape|sort:date/beagleboard/ZJGwxA7BG4E/CV2jm9bY4qgJ
it is stated, that it will work, if HDMI and eMMC are
disabled and a patch is applied to the davinci-code 
...
Where does the pin clash came from...any other cape -- real or virtual
-- has been switched off.
Any help is very appreciated...
Best regards,
mcc