I experienced the following issue when working with SIM7600SA-PCIE in
OpenWrt running from a NAND partition. As soon as the modem is
detected, I get the card's information via "mmcli -m 0":
Hardware | manufacturer: QUALCOMM INCORPORATED
| model: 0
| firmware revision: LE11B13SIM7600M22
| carrier config: default
| h/w revision: 10000
| supported: gsm-umts, lte
| current: gsm-umts, lte
| equipment id: 868020030145634
-----------------------------
System | device:
/sys/devices/platform/ocp/47400000.target-module/47401400.usb/musb-hdrc.0/usb1/1-1/1-1.3
| physdev:
/sys/devices/platform/ocp/47400000.target-module/47401400.usb/musb-hdrc.0/usb1/1-1/1-1.3
| drivers: qmi_wwan
| plugin: simtech
| primary port: cdc-wdm0
| ports: cdc-wdm0 (qmi), wwan0 (net)
-----------------------------
Status | state: failed
| failed reason: sim-missing
| power state: on
........
SIM | primary sim path: /org/freedesktop/ModemManager1/SIM/0
| sim slot paths: slot 1:
/org/freedesktop/ModemManager1/SIM/0 (active)
| slot 2: none
Then, I perform a modem reset: mmcli -m 0 -r and the SIM card is working.
When I start the same rootfs from an SD card, everything is working as
expected. Hence, this seems to depend on the lower speed of the NAND
boot medium.
My system:
Linux 6.1.62
OpenWrt: SNAPSHOT r24436-0f283ab4c9 (v23.05.2)
mmcli 1.22.0
Any idea what's going wrong and how to fix this behavior?
Regards,
Yegor
