ath12k: No 6GHz Wireless found

[Kang Yang]

On 4/3/2025 1:48 AM, Walt Holman wrote:
> On Tue, Apr 1, 2025 at 9:48 PM Kang Yang <quic_kangyang at quicinc.com> wrote:

>>
>> Test on 6.14.0-rc5-wt-ath+, with the firmware you used.
>> I can get 6 GHz AP and connect to it.
>>
>> ath12k_pci 0000:03:00.0: fw_version 0x100301e1 fw_build_timestamp
>> 2023-12-06 04:05 fw_build_id
>> QC_IMAGE_VERSION_STRING=WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
>>
>> yk at yk-Mayan:~$ sudo iw wls1 scan | tee iw_scan.log:
>> BSS 62:03:7f:12:64:64(on wls1) -- associated
>>           TSF: 606308271476 usec (7d, 00:25:08)
>>           freq: 6275
>>           beacon interval: 100 TUs
>>           capability: ESS Privacy SpectrumMgmt ShortSlotTime (0x0511)
>>           signal: -17.00 dBm
>>           last seen: 52 ms ago
>>           Information elements from Probe Response frame:
>>           SSID: MLO-KANG-6G
>> and other 6 GHz APs:
>>          SSID: 6G-gxia
>>          SSID: NETGEAR97-6G
>>          ……
>>
>>
>> kernel log:
>> [88158.033218] wls1: Inserted STA 62:03:7f:12:64:64
>> [88158.033232] wls1: authenticate with 62:03:7f:12:64:64 (local
>> address=00:03:7f:37:12:54)
>> [88158.033242] wls1: send auth to 62:03:7f:12:64:64 (try 1/3)
>> [88158.041895] wls1: authenticated
>> [88158.041914] wls1: moving STA 62:03:7f:12:64:64 to state 2
>> [88158.044291] wls1: determined local STA to be EHT, BW limited to 320 MHz
>> [88158.045719] wls1: associate with 62:03:7f:12:64:64 (try 1/3)
>> [88158.067045] wls1: RX AssocResp from 62:03:7f:12:64:64 (capab=0x511
>> status=0 aid=4)
>> [88158.089090] wls1: associated
>>
>> I can even connect to it by Ubuntu GUI.
>>
>> Can you update to 6.14.0-rc5-wt-ath+ and have a retry? Also please make
>> sure that your wpa_supplicant/iw support 6 GHz(or directly update to the
>> latest version).
>>
>> If you still cannot find 6 GHz AP, you can set debug_mask to 0xffffffff
>> to get ath12k logs. Then give it to us.
>>
>>
>>> -Walt
>>>
>>
> 
> OK, I retested with the wt-ath 033125 tagged build. This included the
> patch the Jeff suggested I try, but the rest of the tree was clean.
> Still no 6ghz Wifi. I'm attaching a log file of the boot and first few
> seconds with the debug mask turned on. I noticed that if I rmmod the
> module and then modprobe it, it complains about not finding
> firmware-2.bin, however, I thought that was only for the qcn based
> chip? The HW info from dmesg looks like this:
> 

I cannot find this tag...


 From the log, the 6 GHz channel should work. When scan is triggered, FW 
shall send probe req on these channels. If AP send probe resp, station 
shall find the AP.




> [    6.070282] ath12k_pci 0000:63:00.0: BAR 0 [mem
> 0xdd800000-0xdd9fffff 64bit]: assigned
> [    6.070310] ath12k_pci 0000:63:00.0: enabling device (0000 -> 0002)
> [    6.071249] ath12k_pci 0000:63:00.0: MSI vectors: 16
> [    6.071254] ath12k_pci 0000:63:00.0: Hardware name: wcn7850 hw2.0
> [    6.596331] ath12k_pci 0000:63:00.0: qmi dma allocation failed
> (7077888 B type 1), will try later with sma
> ll size
> [    6.604041] ath12k_pci 0000:63:00.0: chip_id 0x2 chip_family 0x4
> board_id 0xff soc_id 0x40170200
> [    6.604044] ath12k_pci 0000:63:00.0: fw_version 0x100301e1
> fw_build_timestamp 2023-12-06 04:05 fw_build_id
> QC_IMAGE_VERSION_STRING=WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-
> 
> Also, I noticed when looking through the debug logs there are the
> occasional WARNING statements from a BUG it appears. They trace back
> to the mac.c file inside the ath12k code. There should be some in the
> debug log that's attached. Let me know if I can do anything else.
> Thanks,
> 


I have never seen this warning on my upstream setup...Not sure if you 
have changed anything or using the correct code base.

Jeff merged this patch-set into ath-202504021602. Can you try on this 
branch?

git clone https://git.kernel.org/pub/scm/linux/kernel/git/ath/ath.git/
git pull
git reset --hard ath-202504021602
compile and install...

Also make sure that the firmware you used is from the same folder, don't 
mix with other folders:
linux-firmware/ath12k/WCN7850/hw2.0

1. rmmod/insmod(debug_mask=0xffff)
2. iw reg get
3. iw reg set US
4. iw xxx scan
wait and collect logs.

don't do anything else.


Also, can you show me your AP configuration.
If you have another 6 GHz AP, you can have a try(better different brands).


If you have sniffer, could please capture packets during testing?

Thanks!

> -Walt