Backport driver from Zephyr 3.6 to Connect SDK2.5.2

[VM_DM]

I see that zephyr 3.6 supports a device I need in my current project (telit 910 cellular modem). Driver is integrated with others in drivers/modem/modem_cellular.c
Would it be possible to use zephyr 3.6 and SDK 2.5.2 (understanding that this may be untested etc.)?
May I be able to build that driver out of tree (as a temporary solution until a new SDK will move to the new zephyr release)?
Is there a way to just apply a "patch" to current driver, adding support for the one I need?

I am still trying to figure out how the build system works, so I may be missing something obvious

[Marte Myrvold]

Hi,

The Telit ME910G1 Modem is in the Zephyr version used by the main branch of the nRF Connect SDK, see telit,me910g1, so you can checkout to the main branch and use that. Please be aware that the main branch is not stable, so you can experience issues when using that.

Another option is to use the latest stable release of nRF Connect SDK (v2.5.2) and cherry-pick the relevant commits for this driver:

• https://github.com/nrfconnect/sdk-zephyr/commit/018cd27ac6203acbf8f01175457cad58c5c0e91f
• https://github.com/nrfconnect/sdk-zephyr/commit/372216a3ea42662dbb722dc2ef80a5070688529a
• https://github.com/nrfconnect/sdk-zephyr/commit/7cac905e576214ed162705f4214eb4181dbdff63
• https://github.com/nrfconnect/sdk-zephyr/commit/1816b6380b14590a4eb35f22107bff3af4924ae2

Best regards,
Marte

[VM_DM]

Is there some documentation about how I can apply those cherry-picks to an existing NRF Connect SDK setup?
I see that what I have in the 2.5.2 directory does not match the git repo (but I may be wrong).

[Marte Myrvold]

Hi,

You would have to open the zephyr directory in a terminal (e.g. ncs/zephyr) and use git cherry-pick:

git cherry-pick <commit>

So for example for https://github.com/nrfconnect/sdk-zephyr/commit/018cd27ac6203acbf8f01175457cad58c5c0e91f it will be:

git cherry-pick 018cd27ac6203acbf8f01175457cad58c5c0e91f

Here I have cherry-picked the above commit in my nRF Connect SDK installation:

Best regards,
Marte

[VM_DM]

TY