miniPCIE to USB adapter with SIM on colibri t20 V1.2A +iris V1.1A

Hi,

I am working on Colibri T20 256MB V1.2A, Iris V1.1A module.
I am trying to use mini PCIE to usb adapter with the module, I have built the custom kernel as suggested in below post but module is not detecting the mini PCIE module, could you please help on this.

Attached the log file and configuration files.
link text
link text

Regards,
Naveen.

Hi,
Can someone help me on this problem.

Tegra image doesn’t include support for Quectel UC20.
You have to patch drivers/usb/serial/option.c by adding

{ USB_DEVICE(QUALCOMM_VENDOR_ID, 0x9003)}, /* Quectel UC20 */

to static const struct usb_device_id option_ids

And then you need to recompile a Kernel. See details here - https://developer.toradex.com/knowledge-base/build-u-boot-and-linux-kernel-from-source-code

Hi Alex,

Thank you for the help, could you please answer for the below queries.

  1. After the changes you suggested module is able to recognise the modem, but it is unable to send AT commands via minicom. As per the below post, modem as to respond for AT commands via /dev/ttyACM0, but it is not showing any ttyACM ports.

https://www.toradex.com/blog/how-to-use-gsm-3g-4g-in-embedded-linux-systems

  1. I tried to configure the ppp options as suggested in above post, but it is giving error attached the log files.link text

Could you please help on this.

Regards,
Naveen.

Sorry, but I’m not familiar with Quectel UC20 modem.
Toradex article you refer to is about configuring Huawei E173s 3G modem.
I’d recommend you to ask Quectel about their modem configuration details.