2251300_en-US

[#1]

Wi-Fi stops working after shutdown on FRDM-i.MX8MP – SDIO probe fails with error -110

I am using an FRDM-i.MX8MP board with an NXP Wi-Fi module (IW612 depending on the variant).

Wi-Fi has been working perfectly for several weeks with our Yocto-based system.
After a normal shutdown / power off, Wi-Fi suddenly no longer initializes.

Symptoms:
The SDIO device is still detected:
mmc0: new ultra high speed SDR104 SDIO card at address 0001

The NXP WLAN driver (moal/mlan) loads, but the SDIO probe fails:
wlan_sdio: probe of mmc0:0001:1 failed with error -110

No Wi-Fi interface appears (no wlan0, nmcli device shows no Wi-Fi).
The kernel shows no firmware load errors.
/sys/bus/mmc/devices/mmc0:0001/driver shows no bound driver.
The issue persists after multiple reboots.

Bluetooth: hci0: Setting baudrate failed (-110)

(This was present before, but Wi-Fi was working fine.)

Board: FRDM-i.MX8MP
Kernel: 6.6 (NXP Scarthgap Release)
Distro: NXP i.MX Release Distro 6.6-scarthgap
Wireless Driver: moal/mlan (out-of-tree NXP WLAN SDK)

Wi-Fi initialization failure:

mlan: loading out-of-tree module taints kernel.
wlan: Loading MWLAN driver
wlan_sdio: probe of mmc0:0001:1 failed with error -110
wlan: Driver loaded successfully

SDIO enumeration:
mmc0: new ultra high speed SDR104 SDIO card at address 0001

Bluetooth UART failures:
Bluetooth: hci0: Setting baudrate failed (-110)
Bluetooth: hci0: Setting wake-up method failed (-110)
Bluetooth: hci0: Setting Power Save mode failed (-110)

No driver bound:
ls -l /sys/bus/mmc/devices/mmc0:0001/driver
→ no driver bound

Yocto ProjectRe: Wi-Fi stops working after shutdown on FRDM-i.MX8MP – SDIO probe fails with error -110

Hi @MTeschke,

Thank you for your preference in NXP products,

What do you mean by a normal shutdown? Was it the first time you performed a normal shutdown?

Please try reflashing your board with the proper DTB.

Regards,