Platform
- i.MX8M Plus EVK, kernel 6.12.49-lts-next-g42fbadd4b2e9-dirty
- WiFi/BT module: AW-XM729, driver btnxpuart
- Same hardware/kernel, two Yocto images: imx-image-core (BT works) vs imx-image-multimedia (BT fails)
Issue
- On the multimedia image, imx-sdma@30bd0000 takes ~60s to report firmware ready: [ 3.11] imx-sdma 30bd0000.dma-controller: sdma or sdma firmware not ready!
[ 60.40] imx-sdma 30bd0000.dma-controller: firmware found. - btnxpuart probes the BT UART at ~3–7s — before SDMA is ready — so the UART can't get DMA channels, and BT's HCI_Reset times out:
imx-uart 30860000.serial: We cannot prepare for the RX/TX slave dma!
Bluetooth: hci0: Opcode 0x0c03 failed: -110 - On the working core image, SDMA is ready by ~3.7s, before BT probes — no issue.
Please Help here!
Dear @Sanjiv_Mns ,
Thanks for your feedback.
I will setup environment to test imx-image-multimeadia + IW623.
I need some time to prepare it, please wait for my test result.
By the way, AW-XM729 has 2 kinds of types, AW-XM729-PUR or AW-XM729-SUR?
Thanks!
Regards,
Weidong
Dear @Sanjiv_Mns ,
Any update ?
Could you tell me SDIO or PCIE interface you are using?
Thanks!
Regards,
weidong
Dear @Sanjiv_Mns ,
I built imx-image-multimedia based on L6.12.49.2.2.0 yocto source, run it on i.mx8mp-evk.
The IW623 module I am using is AW-XM729-PUR, which is M.2 module with PCIE interface.
If you are using SDIO interface for WIFI, the dtb file should be imx8mp-evk-usdhc1-m2.dtb
then run:
# modprobe btnxpuart
#hciconfig -a
hci0 interface will be listed.
[Note]
Default driver in imx-image-multimedia supports IW623, It uses AW693 firmware.
Thanks!
Regards,
Weidong