Skip to main content
A
adnan_pasha
Visitor II
May 2, 2025
Solved

Adding support for Wifi-bt module for STM32MP157DAC custom board

  • May 2, 2025
  • 1 reply
  • 644 views

Hi,

We are working on a custom carrier board based on STM32MP157DAC. We have built a custom yocto image.

  • Yocto Version: Mickledore
  • Machine: stm32mp15-disco
  • SoM: STM32MP157DAC
  • Distro: openstlinux-weston
  • Linux Kernel: 6.1.82-stm32mp-r2-r0
  • WIFI-Bt: LBEE5PL2DL-921

I have attached the dmesg log and device tree configuration.
Is the driver support for this wifi-bt module directly available or do I need to configure something?
bluetooth is configured as serial3 but I don't see any /dev/ttySTM2 device node.

[ 14.597018] Bluetooth: Core ver 2.22
[ 14.606728] Bluetooth: HCI device and connection manager initialized
[ 14.614038] Bluetooth: HCI socket layer initialized
[ 14.629270] Bluetooth: L2CAP socket layer initialized
[ 14.637891] Bluetooth: SCO socket layer initialized
[ 14.658379] Bluetooth: HCI UART driver ver 2.3
[ 14.669248] Bluetooth: HCI UART protocol H4 registered
[ 14.675392] Bluetooth: HCI UART protocol Broadcom registered
[ 14.986555] Bluetooth: hci0: Frame reassembly failed (-84)
[ 15.485933] Bluetooth: hci0: Frame reassembly failed (-84)
[ 15.985947] Bluetooth: hci0: Frame reassembly failed (-84)
[ 16.485928] Bluetooth: hci0: Frame reassembly failed (-84)
[ 16.985992] Bluetooth: hci0: Frame reassembly failed (-84)
[ 17.110864] Bluetooth: hci0: command 0xfc18 tx timeout
[ 25.430835] Bluetooth: hci0: BCM: failed to write update baudrate (-110)
[ 25.436194] Bluetooth: hci0: Failed to set baudrate
[ 25.485997] Bluetooth: hci0: Frame reassembly failed (-84)
[ 25.986019] Bluetooth: hci0: Frame reassembly failed (-84)

I am getting above error regarding bluetooth but i dont see any logs regarding wifi in dmesg.

Thanks



    This topic has been closed for replies.
    Best answer by adnan_pasha

    Hello,

    After cross-compiling the MLAN and MOAL drivers for the Murata IW611 module and loading the combo firmware, I was able to detect both the SDIO and Bluetooth interfaces and get them working. This was done while following the correct power sequence for the individual RESET and PDN pins.

    Thank you.

    1 reply

    A
    adnan_pashaAuthorAnswer
    Visitor II
    June 22, 2025

    Hello,

    After cross-compiling the MLAN and MOAL drivers for the Murata IW611 module and loading the combo firmware, I was able to detect both the SDIO and Bluetooth interfaces and get them working. This was done while following the correct power sequence for the individual RESET and PDN pins.

    Thank you.

    Terms & ConditionsAccessibility statement