{EXT}: Re: SIMCOM7600H-PCIE

Reinhard Speyerer rspmn at arcor.de
Thu May 24 16:31:04 UTC 2018


On Thu, May 24, 2018 at 10:04:41AM +0200, Bjørn Mork wrote:
> Sebastian Sjoholm <sebastian.sjoholm at gmail.com> writes:
> 
> > I tried to add some identification regarding SIMCOM, but haven't come
> > around to get it to work properly. Currently I solved it by setting the USB
> > id to 0x9002 in the modem which reflects the configuration example below.
> > The SimCom modem have AT command set this id.
> 
> Hello Sebastian!
> 
> This problem has surfaced again on the LEDE discussion forum, where I
> got the lsusb -v output from a SIM7100E and SIM7600E-H (both using the
> same ID, which I also understand is used by the SIM7230E):
> 
> https://forum.lede-project.org/t/lte-wireless-module-support-by-openwrt-led-on-tplink/13586/36
> 
> As I note there, I see two promising triggers: The bcdDevice version
> number and the bmAttributes flags (SIM7600E-H supports Remote Wakeup,
> while the SIM7100E does not).
> 
> Are you able to provide "lsusb -vd 1e0e:9001" for one or more SIMCOM
> modems?  Anyone else with one of these modems, please join in too.
> The more descriptor samples we have, the better.

Hi Bjørn,

here is the lsusb output for a SIM7100C running firmware 4534B11SIM7100C
and a SIM7230E running firmware 2035B02SIM7230E.

If you don't find a good way to distinguish "old" and "new" 1e0e:9001
devices a qmi_wwan change like commit 14cf4a771b3098e431d2677e3533bdd962e478d8
("drivers: net: usb: qmi_wwan: add QMI_QUIRK_SET_DTR for Telit PID 0x1201")
might be the simplest way to proceed.

Regards,
Reinhard

> 
> And any of you with only an older modem currently working fine should
> definitely send me the lsusb  sample now.  That's the only way to ensure
> that I don't break anything currently working....
> 
> FWIW, I have decided to argue against the usual "we don't break
> existing stuff" in this case.  SIMCOM sells broken devices. We can never
> make any gurantee that they will work with Linux.  And by continuing to
> release new broken modem varianst, SIMCOM are making workarounds harder
> and harder.  This is going to break down in the end, even if we manage
> to come up with some creative solution right now.
> 
> So the only real solution is to stop buying any device with the
> 1e0e:9001 device ID.  They are unsupportable.  IIUC, this means all
> SIMCOM modems.  Please correct me if I'm wrong.
> 
> 
> Bjørn
> _______________________________________________
> libqmi-devel mailing list
> libqmi-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/libqmi-devel
-------------- next part --------------

Bus 005 Device 014: ID 1e0e:9001 Qualcomm / Option 
Device Descriptor:
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  bDescriptorType         1
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  idVendor           0x1e0e Qualcomm / Option
  idProduct          0x9001 
  bcdDevice            2.32
  iManufacturer           1 SimTech, Incorporated
  iProduct                2 SimTech, Incorporated
  iSerial                 3 0123456789ABCDEF
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      (Bus Powered)
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Device Status:     0x0000
  (Bus Powered)
-------------- next part --------------

Bus 005 Device 015: ID 1e0e:9001 Qualcomm / Option 
Device Descriptor:
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  bDescriptorType         1
  bcdUSB               2.01
  bDeviceClass            0 (Defined at Interface level)
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  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x1e0e Qualcomm / Option
  idProduct          0x9001 
  bcdDevice            2.28
  iManufacturer           1 Android
  iProduct                2 Android
  iSerial                 3 Mdm9x25
  bNumConfigurations      2
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    bDescriptorType         2
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    bmAttributes         0x80
      (Bus Powered)
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  (Bus Powered)


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