Your log files show you are running CoreELEC - best to ask them.
Your log is from CoreELEC, not LibreELEC.
Maybe you have to add
dtoverlay=iqaudio-dacplusto your config.txt.
Thank's for answers
Downloaded and install image files from Rockchip – LibreELEC 
for to my hiffibery Dac Pro card dtoverlay=hifiberry-dacplus in config.txt
Is it solved now? If yes, mark it that way, and other HiFiBerry users will benefit.
Unfortunatly! 
not solved yet, i'll ask on tinkerboard forum
when i find a way , I'll rewriting all instructions, clearly for users of these cards 
Can you post the content of your config.txt please?
Hi,
It looks like Asus has ported some raspberry Pi audio hats to his own tinkerOS
debian_kernel/sound/soc/rockchip at develop · TinkerBoard/debian_kernel · GitHub
But libreelec is using generic rockchip kernel,which is lacking those modules.
kernel/sound/soc/rockchip at develop-4.4 · rockchip-linux/kernel · GitHub
So... Using libreelec with tinkerboard + hifiberry dac is not impossible, but won't be easy.
Maybe try tinkerOS first, it should allow you to install kodi.
had try TinkerOS first !
worst Debian system i ever seen 
first apt-get update... and Chromium out!
apt-get install kodi ... and tada 
1.7 version !.
I have not time to play with a system like that 32bit, exotic arm architure. specific compileur and other's joyousness
the config.txt! it's simple
just
dtoverlay=hifiberry-dacplussoo, thank's a loot for the info of generic rockchip kernel! 
very useful info on Device tree! at rasberry.org
Lot of work's too 
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