Cubietruck onboard bluetooth with mainline kernel

[alpinista]

Has anybody got this working with mainline kernel? When I do:

 

brcm_patchram_plus -d  --patchram bcm20710a1.hcd --enable_hci --bd_addr 11:22:33:44:55:66 --no2bytes --tosleep 1000 /dev/ttyS1

 

I get this:

 

option patchram with arg bcm20710a1.hcd

option enable_hci

option bd_addr with arg 11:22:33:44:55:66

option no2bytes

option tosleep with arg 1000

/dev/ttyS1 

Previous discipline = 0

Done setting line discpline

Current discipline = 0

Waiting CTS...

 

And there it stops. No dev hci0 created. I woulb be thankful for any hints that point me in the right direction.

 

Paul

[Igor]

I also failed, but I guess I was not persistent enough. I manage to fix it in legacy kernel where works stable.

 

It should go. Check this:

 

https://github.com/phelum/CT_Bluetooth

[alpinista]

Muchissimas Gracias, Igor! Will have a look into this later on. Thanks again for your great work!

[zador.blood.stained]

Onboard BT will be supported with new mainline kernel release (I mean Armbian release, it's supported for self-compiled kernels now), you'll have to edit /etc/default/brcm40183 and use ttyS2 as Bluetooth port.

But FYI Bluetooth audio is not supported on mainline - it requires I2S support, which is not present (and developer that tried to implement it said it won't be ready soon).

[alpinista]

Well, I tried a lot. Compiled new kernel 4.6, patched the .dtb, did a lot of reading - now I am giving it up. No success. I whished I could come up with a step-by-step howto, but now I think I will just buy a cheap usb bluetooth dongle.  

 

It will always give me this:

hciattach /dev/ttyS2 any                                                                                                    

Can't get port settings: Input/output error

Can't initialize device: Input/output error

[zador.blood.stained]

Compiled new kernel 4.6, patched the .dtb

4.6 is dev branch and it doesn't have necessary patch, while "next" branch does.

 

Last time I tested it worked for me with following unit file (will work on Jessie, Stretch (testing) or Xenial):

➜  ~  % cat /etc/systemd/system/brcm40183-patch.service
[Unit]
Description=Patch firmware for brcm40183 Bluetooth adapter
Before=bluetooth.service

[Service]
Environment=MAC_ADDR=11:22:33:44:55:66
Environment=PORT=/dev/ttyS1
EnvironmentFile=/etc/default/brcm40183
TimeoutStartSec=60
Type=simple
ExecStartPre=/usr/local/bin/brcm_bt_reset /dev/${PORT}
ExecStartPre=/bin/echo -en "" > /dev/${PORT}
ExecStartPre=/usr/local/bin/brcm_patchram_plus -d --patchram /lib/firmware/ap6210/bcm20710a1.hcd --no2bytes --tosleep 1000 --bd_addr ${MAC_ADDR} /dev/${PORT}
ExecStart=/usr/bin/hciattach -n /dev/${PORT} any

[Install]
WantedBy=bluetooth.target

and configuration file

➜  ~  % cat /etc/default/brcm40183
MAC_ADDR=43:29:B1:E6:A1:02
PORT=ttyS2

[alpinista]

Great, thanks Zador!