Telit LE910 failing to find network

[Daniele Palmas]

Hi Lars,

2017-07-19 13:43 GMT+02:00 Lars Melin <larsm17 at gmail.com>:
> On 2017-07-19 16:48, Kelvin wrote:
>>
>>
>>         If I'm not wrong qmi_wwan is trying to bind to interface 5, but
>>         rmnet
>>         is on 2 (that has been wrongly taken by option). Which kernel
>>         version
>>         are you using? Did you modify the source code of option and
>>         qmi_wwan?
>>
>>
>>     This does indeed look incorrect - the qmi_wwan.c modification on
>>     this kernel uses 5 but the LE910 documents say to use 2. Good catch,
>>     thanks!
>
>
> 1bc7:1201 needs special handling (set DTR) in the qmi_wwan driver so the fix
> is not as simple as just changing a 5 to a 2.
> You will not get any reply on the qmi interface without that.

LE910 does not need to have dtr set: the change is needed, instead,
for LE920A4 and other more recent modems that are sharing the same
PID, but need DTR set.

According to logs shared by Kelvin, the modem seems to be properly replying.

Regards,
Daniele

>
> /Lars
>
>