I.mx8mp PCie initial

LarryLee — Tue, 30 Dec 2025 06:02:06 GMT

I use i.mx8mp evk board with yocto in kernel 6.6.23.

I got the error when I enable pcie bus

[ 43.704357] wlan_cnss_core_pcie: loading out-of-tree module taints kernel.
[ 43.718247] NET: Registered PF_QIPCRTR protocol family
[ 43.723678] Unable to handle kernel NULL pointer dereference at virtual address 00000000000002a0

01:00.0 Network controller: Qualcomm Technologies, Inc Device 1112 (rev 01)

lspci -vvv -s 01:00.0
01:00.0 Network controller: Qualcomm Technologies, Inc Device 1112 (rev 01)
Subsystem: Qualcomm Technologies, Inc Device 1110
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Region 0: Memory at 18200000 (64-bit, non-prefetchable) [disabled] [size=2M]
Region 2: Memory at 18100000 (64-bit, non-prefetchable) [disabled] [size=32K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [50] MSI: Enable- Count=1/32 Maskable+ 64bit-
Address: 00000000 Data: 0000
Masking: 00000000 Pending: 00000000
Capabilities: [70] Express (v2) Endpoint, IntMsgNum 0
DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s unlimited, L1 unlimited
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset- SlotPowerLimit 0W
DevCtl: CorrErr- NonFatalErr- FatalErr- UnsupReq-
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr+ TransPend-
LnkCap: Port #0, Speed 8GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <1us, L1 <64us
ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+
LnkCtl: ASPM Disabled; RCB 64 bytes, LnkDisable- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 8GT/s, Width x1
TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Range ABCD, TimeoutDis+ NROPrPrP- LTR+
10BitTagComp- 10BitTagReq- OBFF Not Supported, ExtFmt- EETLPPrefix-
EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
FRS- TPHComp+ ExtTPHComp-
AtomicOpsCap: 32bit- 64bit- 128bitCAS-
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
AtomicOpsCtl: ReqEn-
IDOReq- IDOCompl- LTR- EmergencyPowerReductionReq-
10BitTagReq- OBFF Disabled, EETLPPrefixBlk-
LnkCap2: Supported Link Speeds: 2.5-8GT/s, Crosslink- Retimer- 2Retimers- DRS-
LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-
Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
Compliance Preset/De-emphasis: -6dB de-emphasis, 0dB preshoot
LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete+ EqualizationPhase1+
EqualizationPhase2+ EqualizationPhase3+ LinkEqualizationRequest-
Retimer- 2Retimers- CrosslinkRes: unsupported
Capabilities: [b0] MSI-X: Enable- Count=32 Masked-
Vector table: BAR=2 offset=00000000
PBA: BAR=2 offset=00001000
Capabilities: [100 v2] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr-
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr+
AERCap: First Error Pointer: 00, ECRCGenCap+ ECRCGenEn- ECRCChkCap+ ECRCChkEn-
MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap-
HeaderLog: 00000000 00000000 00000000 00000000
Capabilities: [148 v1] Secondary PCI Express
LnkCtl3: LnkEquIntrruptEn- PerformEqu-
LaneErrStat: 0
Capabilities: [158 v1] Transaction Processing Hints
No steering table available
Capabilities: [164 v1] Latency Tolerance Reporting
Max snoop latency: 0ns
Max no snoop latency: 0ns
Capabilities: [16c v1] L1 PM Substates
L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+
PortCommonModeRestoreTime=70us PortTPowerOnTime=0us
L1SubCtl1: PCI-PM_L1.2- PCI-PM_L1.1- ASPM_L1.2- ASPM_L1.1-
T_CommonMode=0us LTR1.2_Threshold=86016ns
L1SubCtl2: T_PwrOn=10us

My question is that did there have any suggestion about

[ 43.723678] Unable to handle kernel NULL pointer dereference at virtual address 00000000000002a0
[ 43.732511] Mem abort info:
[ 43.735311] ESR = 0x0000000096000004
[ 43.739085] EC = 0x25: DABT (current EL), IL = 32 bits
[ 43.744431] SET = 0, FnV = 0
[ 43.747492] EA = 0, S1PTW = 0
[ 43.750695] FSC = 0x04: level 0 translation fault
[ 43.755599] Data abort info:
[ 43.758493] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
[ 43.764028] CM = 0, WnR = 0, TnD = 0, TagAccess = 0
[ 43.769100] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[ 43.774426] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000116d9e000
[ 43.780877] [00000000000002a0] pgd=0000000000000000, p4d=0000000000000000
[ 43.787681] Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP

Thanks

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I.mx8mp PCie initial