Android 9 bluetooth problem on p212 board (or its new name: Ampere)

[salehdeh76]

I have a test board for amlogic S905X chip. (p212 reference board) When I burn my ROM into it, the bluetooth constantly shows "stopping" dialog. The logfile (tombstone) is quite long but the important part is here:

01-01 00:24:15.708 28953 28986 I bt_hci : hci_initialize
01-01 00:24:15.710 28953 28970 D bt_hci : hci_module_start_up starting async portion
01-01 00:24:15.711 28953 28986 I bt_hci : hci_initialize: IBluetoothHci::getService() returned 0xa1b91560 (remote)
01-01 00:24:16.209 28953 28987 F : [0101/002416.209517:FATAL:hci_layer_android.cc(78)] Check failed: status == Status::SUCCESS.


It seems the hardware is initialized but the the HCI can not be started. Is it related to kernel drivers or android user space and HAL modules? or even framework(?!)
I guess the board has a AP6212 chip for bluetooth/wifi.

How can I approach this problem to solve it?

the full tombstone log file is pasted here
logcat is pasted here.


Thanks

[Bange23]

First

[salehdeh76]

I can build AOSP and I am eager to know where in the stack I should look for it?
kernel drivers/ HAL modules/framework/hcd binaries/...