Cherry-pick changes from upstream Zephyr for modem CMUX power saving#3444

Merged

rlubos merged 26 commits intonrfconnect:mainfrom

SeppoTakalo:modem_upmerge

Nov 4, 2025

Commits on Nov 4, 2025

[nrf fromtree] modem: at_shell: extract user pipe handling

JordanYates
authored and
SeppoTakalo
committed
[nrf fromtree] modem: modem_cellular: Allow PPP interface to wake up the device
SeppoTakalo
committed
[nrf fromtree] modem: cmux: Clean debugging a bit
SeppoTakalo
committed
[nrf fromtree] modem: cmux: Rework the drop handling
SeppoTakalo
committed
[nrf fromtree] modem: cmux: auto calculate work buffer sizes

JordanYates
authored and
SeppoTakalo
committed
[nrf fromtree] drivers: modem: cellular: nRF91: Remove periodic chat script
SeppoTakalo
committed
[nrf fromtree] modem: cmux: Implement DM and NSC responses
SeppoTakalo
committed
[nrf fromtree] modem: cmux: Define macros for header size
SeppoTakalo
committed
[nrf fromtree] modem: cmux: Handle C/R bit from address field
SeppoTakalo
committed
[nrf fromtree] modem: modem_ppp: optimise frame wrapping

JordanYates
authored and
SeppoTakalo
committed
[nrf fromtree] modem: cmux: Combine state and event
SeppoTakalo
committed
[nrf fromtree] modem: cmux: Handle CLD response
SeppoTakalo
committed
[nrf fromtree] modem: cmux: Send disconnect event only after responding to CLD
SeppoTakalo
committed
[nrf fromtree] drivers: modem: cellular: Close down CMUX before shut down
SeppoTakalo
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[nrf fromtree] modem: cmux: Implement Modem Status Command
SeppoTakalo
committed
[nrf fromtree] drivers: modem: Extract common dts bindings
SeppoTakalo
committed
[nrf fromtree] doc: release-notes-4.3: Mention the backlog support for listen()

rlubos
authored and
SeppoTakalo
committed
[nrf fromtree] modem: optional dedicated workqueue

JordanYates
authored and
SeppoTakalo
committed
[nrf fromlist] modem: cmux: Define encoding and decoding functions for commands
SeppoTakalo
committed
[nrf fromlist] drivers: modem: Implement support for DTR signal
SeppoTakalo
committed
[nrf fromlist] modem: cmux: Implement Power Saving Control message
SeppoTakalo
committed
[nrf fromlist] drivers: modem: Implement runtime power management for CMUX
SeppoTakalo
committed
[nrf fromlist] drivers: modem: cellular: Use k_pipe instead of ringbuffer
SeppoTakalo
committed
[nrf fromlist] drivers: modem: Implement support for RING indicator
SeppoTakalo
committed
[nrf fromlist] modem: pipe: Don't return EPERM on closed pipe
SeppoTakalo
committed
[nrf fromlist] modem: cmux: Add struct cmux_config into struct cmux
SeppoTakalo
committed