Overview & identity
14e4:43ba resolves to BRCM_PCIE_43602_DEVICE_ID. Other 43602 band/raw IDs exist; this curated pair does not identify an Apple or other OEM machine.
- Curated identifiers
pci 14e4:43ba
A numeric match establishes a candidate family within the reviewed evidence. Marketing names, board variants, subsystem conditions and successful operation remain separate questions.
Driver & binding
brcmfmac maps the detected 43602 chip to a PCIe firmware basename. Firmware loading also involves NVRAM choices derived from board/platform information.
brcmfmac— kernel driver/module candidate
Firmware
Host-loaded firmware required
The firmware mapping is chip-specific. Board NVRAM and optional regulatory data, where listed, depend on the detected platform and loader result.
Checked examples or filename branches, not a complete installation list:
brcm/brcmfmac43602-pcie.binbrcm/brcmfmac43602-pcie*.txt
Read-only diagnostics
Run one displayed command at a time. Replace uppercase placeholders with the affected device, interface or module from your own output. Commands are never executed here. Read-only output can still contain private identifiers.
Read the selected PCI function
lspci -nnk -s BDFReplace BDF with the address from your report. Compare Kernel driver in use with Kernel modules; only the former records binding. This ordinary query normally needs no root privileges.
Read firmware metadata
modinfo -F firmware MODULEReplace MODULE with brcmfmac or the actual candidate module in your report. Metadata lists declared filenames; it does not prove a file was loaded. This query needs no root privileges.
Read existing Wi-Fi association
iw dev INTERFACE linkReplace INTERFACE with the wireless interface from iw dev. Association and rate are observations, not a throughput or firmware test. This query normally needs no root privileges.
Limitations & related issues
A PCI table entry does not validate the NVRAM for a particular board. The txt pattern represents possible board naming, not a file every machine must have.
These guides are linked for relevant observations, not as known defects of every device in this family.
- Wi-Fi blocked by rfkill or airplane mode · First documented next step
- Wi-Fi driver cannot load compatible firmware · First documented next step
- Wi-Fi authentication loops or fails · First documented next step
Choose a hardware diagnostic workflow · Inspect a log excerpt in Fix Lab
References
Source review records a checked implementation or document, not a reproduced hardware test. Version-specific tables do not establish a minimum kernel or guaranteed operation.
- Linux source: pcie.c
Reviewed upstream source
- Linux source: brcm_hw_ids.h
Reviewed upstream source
- Linux source: firmware.h
Reviewed upstream source
line 12 - Linux Wireless: read wireless link state
Project or distribution documentation