Hi Lars,

On 5/26/20 5:16 AM, poeschel(a)lemonage.de wrote:
> From: Lars Poeschel <poeschel@lemonage.de>
> 
> This patchset adds support for the quectel EC21 LTE modem connected
> through its serial port.
> 
> Lars Poeschel (7):
>    quectel: Add Quectel EC21 to known serial modems
>    quectel: use lte atom on EC21
>    quectel: Query the model before setting up the mux
>    quectel: EC21 needs aux channel to be the first mux channel
>    quectel: EC21 does not understand AT+QIURC
>    voicecall: Quectel modem do not understand AT+CNAP
>    quectel: EC21 add ussd with atmodem driver
> 
>   drivers/atmodem/voicecall.c |   4 +-
>   plugins/quectel.c           | 153 +++++++++++++++++++++++-------------
>   2 files changed, 101 insertions(+), 56 deletions(-)
> 


So I went ahead and applied everything except patch 4.  See my comments 
in the reply to that patch....

Regards,
-Denis