[BPi-R3 mini] RM520N-GL not detected with OpenWRT 24.10.0-rc5

I installed the newest release candidate for OpenWRT 24.10 on my BPI-R3 mini. Everything works well so far except that I have the Quectel RM520N-GL modem installed but it is not detected. I can’t see it in lsusb or in any of the dmesg entries.

In the stock firmware version 21.02 (2023-11-15 BPI-R3 Mini OpenWRT image with Opensource MAC80211 wifi Driver BSP) it was properly detected.

I have the following relevant kernel modules installed:

kmod-usb-acm - 6.6.69-r1
kmod-usb-core - 6.6.69-r1
kmod-usb-ehci - 6.6.69-r1
kmod-usb-net - 6.6.69-r1
kmod-usb-net-cdc-ether - 6.6.69-r1
kmod-usb-net-cdc-mbim - 6.6.69-r1
kmod-usb-net-cdc-ncm - 6.6.69-r1
kmod-usb-net-cdc-subset - 6.6.69-r1
kmod-usb-net-huawei-cdc-ncm - 6.6.69-r1
kmod-usb-net-qmi-wwan - 6.6.69-r1
kmod-usb-net-rndis - 6.6.69-r1
kmod-usb-ohci - 6.6.69-r1
kmod-usb-serial - 6.6.69-r1
kmod-usb-serial-option - 6.6.69-r1
kmod-usb-serial-pl2303 - 6.6.69-r1
kmod-usb-serial-qualcomm - 6.6.69-r1
kmod-usb-serial-wwan - 6.6.69-r1
kmod-usb-storage - 6.6.69-r1
kmod-usb-storage-uas - 6.6.69-r1
kmod-usb-wdm - 6.6.69-r1
kmod-usb-xhci-hcd - 6.6.69-r1
kmod-usb-xhci-mtk - 6.6.69-r1
kmod-usb2 - 6.6.69-r1
kmod-usb3 - 6.6.69-r1
kmod-wwan - 6.6.69-r1

Is there anything I’m missing to make it work?

What does lsmod said?

I think usb_wwan and/or qmi_wwan should be loaded at least.