I purchased the wifi + bt module. It is RTL8852BE.
my armbian:
Linux orangepi5-plus 5.10.160-legacy-rk35xx #1 SMP Fri Feb 2 07:51:33 UTC 2024 aarch64 aarch64 aarch64 GNU/Linux
My Bluetooth never works. It cannot be listed under hciconfig:
vnc@orangepi5-plus:~$ hciconfig -a
vnc@orangepi5-plus:~$ rfkill
ID TYPE DEVICE SOFT HARD
0 bluetooth bt_default blocked unblocked
1 wlan phy0 unblocked unblocked
vnc@orangepi5-plus:/$ sudo cat /var/log/dmesg | grep "\(luetooth\|RFKILL\)"
[sudo] password for vnc:
[ 4.299662] kernel: Bluetooth: Core ver 2.22
[ 4.299678] kernel: Bluetooth: HCI device and connection manager initialized
[ 4.299682] kernel: Bluetooth: HCI socket layer initialized
[ 4.299685] kernel: Bluetooth: L2CAP socket layer initialized
[ 4.299691] kernel: Bluetooth: SCO socket layer initialized
[ 5.822591] kernel: [BT_RFKILL]: Enter rfkill_rk_init
[ 5.822597] kernel: [WLAN_RFKILL]: Enter rfkill_wlan_init
[ 5.823354] kernel: [WLAN_RFKILL]: Enter rfkill_wlan_probe
[ 5.823394] kernel: [WLAN_RFKILL]: can't find rockchip,grf property
[ 5.823401] kernel: [WLAN_RFKILL]: wlan_platdata_parse_dt: wifi_chip_type = ap6275p
[ 5.823406] kernel: [WLAN_RFKILL]: wlan_platdata_parse_dt: enable wifi power control.
[ 5.823412] kernel: [WLAN_RFKILL]: wlan_platdata_parse_dt: wifi power controled by gpio.
[ 5.823458] kernel: [WLAN_RFKILL]: wlan_platdata_parse_dt: WIFI,host_wake_irq = 8, flags = 0.
[ 5.823468] kernel: [WLAN_RFKILL]: wlan_platdata_parse_dt: The ref_wifi_clk not found !
[ 5.823473] kernel: [WLAN_RFKILL]: rfkill_wlan_probe: init gpio
[ 5.823480] kernel: [WLAN_RFKILL]: rfkill_set_wifi_bt_power: 1
[ 5.823485] kernel: [WLAN_RFKILL]: Exit rfkill_wlan_probe
[ 5.824968] kernel: [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: uart_rts_gpios = 148.
[ 5.825045] kernel: [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: BT,reset_gpio = 21.
[ 5.825063] kernel: [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: BT,wake_gpio = 150.
[ 5.825081] kernel: [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: BT,wake_host_irq = 0.
[ 5.825187] kernel: [BT_RFKILL]: Request irq for bt wakeup host
[ 5.825276] kernel: [BT_RFKILL]: ** disable irq
[ 5.825419] kernel: [BT_RFKILL]: bt_default device registered.
[ 8.815604] kernel: [BT_RFKILL]: bt shut off power
I tried rfkill to unblock the device. It can be listed under hciconfig:
vnc@orangepi5-plus:~$ sudo rfkill unblock 0
vnc@orangepi5-plus:~$ hciconfig -a
hci0: Type: Primary Bus: USB
BD Address: 00:00:00:00:00:00 ACL MTU: 0:0 SCO MTU: 0:0
DOWN
RX bytes:21 acl:0 sco:0 events:2 errors:0
TX bytes:6 acl:0 sco:0 commands:2 errors:0
Features: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
Packet type: DM1 DH1 HV1
Link policy:
Link mode: PERIPHERAL ACCEPT
After rebooting the dmesg shows the firmware is not found. Please advise:
vnc@orangepi5-plus:/$ sudo cat /var/log/dmesg | grep "\(luetooth\|RFKILL\)"
[sudo] password for vnc:
[ 4.304042] kernel: Bluetooth: Core ver 2.22
[ 4.304063] kernel: Bluetooth: HCI device and connection manager initialized
[ 4.304067] kernel: Bluetooth: HCI socket layer initialized
[ 4.304070] kernel: Bluetooth: L2CAP socket layer initialized
[ 4.304076] kernel: Bluetooth: SCO socket layer initialized
[ 5.796021] kernel: [BT_RFKILL]: Enter rfkill_rk_init
[ 5.796026] kernel: [WLAN_RFKILL]: Enter rfkill_wlan_init
[ 5.796715] kernel: [WLAN_RFKILL]: Enter rfkill_wlan_probe
[ 5.796743] kernel: [WLAN_RFKILL]: can't find rockchip,grf property
[ 5.796749] kernel: [WLAN_RFKILL]: wlan_platdata_parse_dt: wifi_chip_type = ap6275p
[ 5.796754] kernel: [WLAN_RFKILL]: wlan_platdata_parse_dt: enable wifi power control.
[ 5.796758] kernel: [WLAN_RFKILL]: wlan_platdata_parse_dt: wifi power controled by gpio.
[ 5.796795] kernel: [WLAN_RFKILL]: wlan_platdata_parse_dt: WIFI,host_wake_irq = 8, flags = 0.
[ 5.796801] kernel: [WLAN_RFKILL]: wlan_platdata_parse_dt: The ref_wifi_clk not found !
[ 5.796804] kernel: [WLAN_RFKILL]: rfkill_wlan_probe: init gpio
[ 5.796809] kernel: [WLAN_RFKILL]: rfkill_set_wifi_bt_power: 1
[ 5.796813] kernel: [WLAN_RFKILL]: Exit rfkill_wlan_probe
[ 5.797654] kernel: [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: uart_rts_gpios = 148.
[ 5.797698] kernel: [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: BT,reset_gpio = 21.
[ 5.797709] kernel: [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: BT,wake_gpio = 150.
[ 5.797720] kernel: [BT_RFKILL]: bluetooth_platdata_parse_dt: get property: BT,wake_host_irq = 0.
[ 5.797785] kernel: [BT_RFKILL]: Request irq for bt wakeup host
[ 5.797840] kernel: [BT_RFKILL]: ** disable irq
[ 5.797942] kernel: [BT_RFKILL]: bt_default device registered.
[ 8.790808] kernel: [BT_RFKILL]: rfkill_rk_set_power: set bt wake_host high!
[ 8.842572] kernel: [BT_RFKILL]: rfkill_rk_set_power: set bt wake_host input!
[ 8.842598] kernel: [BT_RFKILL]: ENABLE UART_RTS
[ 8.952573] kernel: [BT_RFKILL]: DISABLE UART_RTS
[ 8.952634] kernel: [BT_RFKILL]: bt turn on power
[ 8.952658] kernel: [BT_RFKILL]: Request irq for bt wakeup host
[ 8.952693] kernel: [BT_RFKILL]: ** disable irq
[ 9.253728] kernel: usb 5-1.1: Product: Bluetooth Radio
[ 9.312606] kernel: Bluetooth: hci0: RTL: examining hci_ver=0b hci_rev=000b lmp_ver=0b lmp_subver=8852
[ 9.313357] kernel: rtk_btusb: Realtek Bluetooth USB driver ver 3.1.6d45ddf.20220519-142432
[ 9.313592] kernel: Bluetooth: hci0: RTL: rom_version status=0 version=1
[ 9.313600] kernel: Bluetooth: hci0: RTL: loading rtl_bt/rtl8852bu_fw.bin
[ 9.315321] kernel: bluetooth hci0: Direct firmware load for rtl_bt/rtl8852bu_fw.bin failed with error -2
[ 9.315330] kernel: Bluetooth: hci0: RTL: firmware file rtl_bt/rtl8852bu_fw.bin not found
[ 11.338412] kernel: Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 11.338421] kernel: Bluetooth: BNEP filters: protocol multicast
[ 11.338434] kernel: Bluetooth: BNEP socket layer initialized
