Re: ath12k: No 6GHz Wireless found

[Jeff Johnson <jeff.johnson@oss.qualcomm.com>]

On 3/30/2025 7:28 AM, Walt Holman wrote:
> Hello,
> 
> I have a wcn7850 hw2.0 based m.2 wireless card in my laptop and am
> unable to see or connect to 6Ghz networks. I have an ASUS BE30000 wifi
> router setup with a separate 6ghz only network, which my phone and
> other laptops can connect to. I'm unable to even see this network on
> this particular laptop. Months ago (maybe September), I could see it
> occasionally, but now it never shows up. I'm using firmware from
> git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git
> and track the kernels pretty closely. I'm currently running 6.14.0
> built from source. Any suggestions? Some HW info is below:
> 
> 63:00.0 Network controller: Qualcomm Technologies, Inc WCN785x Wi-Fi
> 7(802.11be) 320MHz 2x2 [FastConnect 7800
> ] (rev 01)
>        Subsystem: Quectel Wireless Solutions Co., Ltd. Device 8000
>        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-
>        Latency: 0, Cache Line Size: 64 bytes
>        Interrupt: pin ? routed to IRQ 111
>        IOMMU group: 19
>        Region 0: Memory at dd800000 (64-bit, non-prefetchable) [size=2M]
>        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=16/32 Maskable+ 64bit-
>                Address: fee00000  Data: 0000
>                Masking: ffff8000  Pending: 00000000
>        Capabilities: [70] Express (v2) Endpoint, IntMsgNum 0
>                DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s
> unlimited, L1 unlimited
>                        ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
> SlotPowerLimit 75W TEE-IO-
>                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 x2, ASPM L0s L1,
> Exit Latency L0s <1us, L1 <64us
>                        ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+
>                LnkCtl: ASPM L1 Enabled; RCB 64 bytes, LnkDisable- CommClk+
>                        ExtSynch+ ClockPM- AutWidDis- BWInt- AutBWInt-
>                LnkSta: Speed 8GT/s, Width x1 (downgraded)
>                        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: -3.5dB,
> EqualizationComplete+ EqualizationPhase1+
>                         EqualizationPhase2+ EqualizationPhase3+
> LinkEqualizationRequest-
>                         Retimer- 2Retimers- CrosslinkRes: unsupported
>        Capabilities: [100 v2] Advanced Error Reporting
>                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt-
> UnxCmplt- RxOF- MalfTLP-
>                        ECRC- UnsupReq- ACSViol- UncorrIntErr-
> BlockedTLP- AtomicOpBlocked- TLPBlockedErr-
>                        PoisonTLPBlocked- DMWrReqBlocked- IDECheck-
> MisIDETLP- PCRC_CHECK- TLPXlatBlocked-
>                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt-
> UnxCmplt- RxOF- MalfTLP-
>                        ECRC- UnsupReq- ACSViol- UncorrIntErr+
> BlockedTLP- AtomicOpBlocked- TLPBlockedErr-
>                        PoisonTLPBlocked- DMWrReqBlocked- IDECheck-
> MisIDETLP- PCRC_CHECK- TLPXlatBlocked-
>                UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt-
> UnxCmplt- RxOF+ MalfTLP+
>                        ECRC- UnsupReq- ACSViol- UncorrIntErr+
> BlockedTLP- AtomicOpBlocked- TLPBlockedErr-
>                        PoisonTLPBlocked- DMWrReqBlocked- IDECheck-
> MisIDETLP- PCRC_CHECK- TLPXlatBlocked-
>                CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout-
> AdvNonFatalErr- CorrIntErr- HeaderOF-
>                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout-
> AdvNonFatalErr+ CorrIntErr+ HeaderOF+
>                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: [1e4 v1] Latency Tolerance Reporting
>                Max snoop latency: 1048576ns
>                Max no snoop latency: 1048576ns
>        Capabilities: [1ec 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=166912ns
>                L1SubCtl2: T_PwrOn=90us
>        Kernel driver in use: ath12k_pci
>        Kernel modules: ath12k
> 
> root@walt-ROG-zephyrus:~# iw reg get
> global
> country US: DFS-FCC
>         (902 - 904 @ 2), (N/A, 30), (N/A)
>         (904 - 920 @ 16), (N/A, 30), (N/A)
>         (920 - 928 @ 8), (N/A, 30), (N/A)
>         (2400 - 2472 @ 40), (N/A, 30), (N/A)
>         (5150 - 5250 @ 80), (N/A, 23), (N/A), AUTO-BW
>         (5250 - 5350 @ 80), (N/A, 24), (0 ms), DFS, AUTO-BW
>         (5470 - 5730 @ 160), (N/A, 24), (0 ms), DFS
>         (5730 - 5850 @ 80), (N/A, 30), (N/A), AUTO-BW
>         (5850 - 5895 @ 40), (N/A, 27), (N/A), NO-OUTDOOR, AUTO-BW, PASSIVE-SCAN
>         (5925 - 7125 @ 320), (N/A, 12), (N/A), NO-OUTDOOR, PASSIVE-SCAN
>         (57240 - 71000 @ 2160), (N/A, 40), (N/A)
> 
> phy#0 (self-managed)
> country na: DFS-UNSET
>         (2402 - 2472 @ 40), (N/A, 20), (N/A)
>         (2457 - 2482 @ 20), (N/A, 20), (N/A), PASSIVE-SCAN
>         (5170 - 5330 @ 160), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
>         (5490 - 5730 @ 160), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
>         (5735 - 5895 @ 160), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
>         (5945 - 7125 @ 320), (N/A, 30), (N/A), AUTO-BW, PASSIVE-SCAN
> 

I added the ath12k list to make sure this has the proper attention.
Since you are building from source, can you please test with the following patch:
https://msgid.link/20250401020840.357-1-quic_kangyang@quicinc.com

This is in my pending queue.

/jeff