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Linux/CC256XCQFN-EM: Configuring CC256x with linux bluez on beaglebone black

Part Number: CC256XCQFN-EM

Tool/software: Linux

I'm trying to use CC256XCQFN-EM connect to BBB, but I can't get it work

I attached CC256XCQFN-EM to BBB UART4

 0.947623] 481a8000.serial: ttyS4 at MMIO 0x481a8000 (irq = 32, base_baud = 3000000) is a 8250

above message is shown on dmesg, so I think UART4 is initialized

then connect to board by

RF1  1 GND       3 CTS           7 Rx         9 Tx

BBB  p9_2         p8_33         p9_13       p9_11

RF2     7 3.3V       19 nshutd       18 RTS

BBB    p9_4          p9_15              p8_35

after startup pull BBB p9_15 to high

call

dbus-daemon --system
/libexec/bluetooth/bluetoothd &

finally

hciattach -n -s 115200 /dev/ttyS4 texas

do init uart
do u init
texas_init
Initialization timed out.

I also tried 

hciattach -n -s 115200 /dev/ttyS4 any

do init uart

do u init

Device setup complete

[ 1611.761620] Bluetooth: hci0 command 0x1003 tx timeout

[ 1613.841603] Bluetooth: hci0 command 0x1001 tx timeout

[ 1615.921615] Bluetooth: hci0 command 0x1009 tx timeout

 dmesg |grep lue

[    0.200857] Bluetooth: Core ver 2.22

[    0.200914] Bluetooth: HCI device and connection manager initialized

[    0.200928] Bluetooth: HCI socket layer initialized

[    0.200938] Bluetooth: L2CAP socket layer initialized

[    0.200979] Bluetooth: SCO socket layer initialized

[    1.095979] Bluetooth: HCI UART driver ver 2.3

[    1.100445] Bluetooth: HCI UART protocol H4 registered

[    1.105628] Bluetooth: HCI UART protocol BCSP registered

[    1.111023] Bluetooth: HCI UART protocol LL registered

[    1.266848] Bluetooth: RFCOMM TTY layer initialized

[    1.266860] Bluetooth: RFCOMM socket layer initialized

[    1.266893] Bluetooth: RFCOMM ver 1.11

[    1.266904] Bluetooth: BNEP (Ethernet Emulation) ver 1.3

[    1.266907] Bluetooth: BNEP filters: protocol multicast

[    1.266915] Bluetooth: BNEP socket layer initialized

[    1.266919] Bluetooth: HIDP (Human Interface Emulation) ver 1.2

[    1.266926] Bluetooth: HIDP socket layer initialized

[   51.794430] random: bluetoothd: uninitialized urandom read (4 bytes read)

[   93.761618] Bluetooth: hci0 command 0x1003 tx timeout

[   95.841628] Bluetooth: hci0 command 0x1001 tx timeout

[   97.921614] Bluetooth: hci0 command 0x1009 tx timeout

[  419.921641] Bluetooth: hci0 command 0x1003 tx timeout

[  422.001606] Bluetooth: hci0 command 0x1001 tx timeout

[  424.081632] Bluetooth: hci0 command 0x1009 tx timeout

[ 1611.761620] Bluetooth: hci0 command 0x1003 tx timeout

[ 1613.841603] Bluetooth: hci0 command 0x1001 tx timeout

[ 1615.921615] Bluetooth: hci0 command 0x1009 tx timeout

can anyone help me

Thanks for any insight

hciattach -n -s 115200 /dev/ttyS4 any