[FS#53] uqmi not working with newer Modems like Sierra Wireless EM7455

[LEDE Bugs]

The following task has a new comment added:

FS#53 - uqmi not working with newer Modems like Sierra Wireless EM7455
User who did this - schoerg (schoerg)

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Yes. In MBIM mode the kernel log will show a new MBIM device.



AT!USBCOMP=?
!USBCOMP:
AT!USBCOMP=,,
        - configuration index to which the composition applies, should be 1

         - 1:Generic, 2:USBIF-MBIM, 3:RNDIS
                        config type 2/3 should only be used for specific Sierra PIDs: 68B1, 9068
                        customized VID/PID should use config type 1

   - DIAG     - 0x00000001,
                        NMEA     - 0x00000004,
                        MODEM    - 0x00000008,
                        RMNET0   - 0x00000100,
                        RMNET1   - 0x00000400,
                        MBIM     - 0x00001000,
  e.g.
  10D  - diag, nmea, modem, rmnet interfaces enabled
  1009 - diag, modem, mbim interfaces enabled

  The default configuration is:
  at!usbcomp=1,1,10F



RMNET is QMI, setting QMI is possible with "AT!USBCOMP=1,1,10D".

In MBIM mode, the following is printed at the log:

[  287.594403] qcserial 1-1:1.0: Qualcomm USB modem converter detected
[  287.601225] usb 1-1: Qualcomm USB modem converter now attached to ttyUSB0
[  287.625965] qcserial 1-1:1.2: Qualcomm USB modem converter detected
[  287.632929] usb 1-1: Qualcomm USB modem converter now attached to ttyUSB1
[  287.656106] qcserial 1-1:1.3: Qualcomm USB modem converter detected
[  287.662875] usb 1-1: Qualcomm USB modem converter now attached to ttyUSB2
[  287.688155] cdc_mbim 1-1:1.12: cdc-wdm0: USB WDM device
[  287.694950] cdc_mbim 1-1:1.12 wwan0: register 'cdc_mbim' at usb-ehci-platform-1, CDC MBIM, 02:c7:5f:60:7e:e3



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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=53#comment154