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modem: cmux: Decouple modem cmux and cellular driver

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The modem modules cmux module is currently directly coupled to the
presence of specific modems, rather than being selected by drivers
for whatever hardware wants to request the default MTU of 127 bytes.

This commit the makes the device drivers (for now, modem_cellular)
select the symbol, thus decoupling the modem modules from the
presence of any specific device.

Signed-off-by: Bjarki Arge Andreasen <bjarki.andreasen@nordicsemi.no>
This commit is contained in:
Bjarki Arge Andreasen 2025-07-21 14:15:32 +02:00 committed by Fabio Baltieri
parent 75a2e5625c
commit 638bf6b03d
2 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/modem/Kconfig.cellular
View File

@ -21,6 +21,13 @@ config MODEM_CELLULAR
DT_HAS_QUECTEL_EG25_G_ENABLED || DT_HAS_NORDIC_NRF91_SLM_ENABLED || \
DT_HAS_SQN_GM02S_ENABLED || DT_HAS_U_BLOX_LARA_R6_ENABLED || \
DT_HAS_QUECTEL_EG800Q_ENABLED)
select MODEM_CMUX_DEFAULT_MTU_127 if \
(DT_HAS_QUECTEL_BG95_ENABLED || DT_HAS_QUECTEL_EG25_G_ENABLED || \
DT_HAS_SIMCOM_SIM7080_ENABLED || DT_HAS_U_BLOX_SARA_R4_ENABLED || \
DT_HAS_U_BLOX_SARA_R5_ENABLED || DT_HAS_SWIR_HL7800_ENABLED || \
DT_HAS_TELIT_ME910G1_ENABLED || DT_HAS_TELIT_ME310G1_ENABLED || \
DT_HAS_SQN_GM02S_ENABLED || DT_HAS_QUECTEL_EG800Q_ENABLED || \
DT_HAS_SIMCOM_A76XX_ENABLED)
help
This driver uses the generic 3gpp AT commands, along
with the standard protocols CMUX and PPP, to configure

9
subsys/modem/Kconfig
View File

@ -31,15 +31,8 @@ if MODEM_CMUX
config MODEM_CMUX_DEFAULT_MTU_127
bool
default y if (DT_HAS_QUECTEL_BG95_ENABLED || DT_HAS_QUECTEL_EG25_G_ENABLED || \
DT_HAS_SIMCOM_SIM7080_ENABLED || DT_HAS_U_BLOX_SARA_R4_ENABLED || \
DT_HAS_U_BLOX_SARA_R5_ENABLED || DT_HAS_SWIR_HL7800_ENABLED || \
DT_HAS_TELIT_ME910G1_ENABLED || DT_HAS_TELIT_ME310G1_ENABLED || \
DT_HAS_SQN_GM02S_ENABLED || DT_HAS_QUECTEL_EG800Q_ENABLED || \
DT_HAS_SIMCOM_A76XX_ENABLED)
help
Use the default MTU size of 127 bytes for the CMUX module on certain modems.
This must match the AT+CMUX commands in the modem_cellular driver.
Hint that the default MODEM_CMUX_MTU size should be 127 bytes.
config MODEM_CMUX_MTU
int "CMUX MTU size in bytes"