wcn7850 issues

[Lingbo Kong]

On 2024/8/6 16:06, david Atkins wrote:
> 
> Hi,
> 
> I have updated the kernel we use for testing today to main from https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/, the base install is the ubuntu 24.04 desktop release
> 
...
> and iw dev wlp1s0 link gives me
> 
> Connected to ac:91:9b:b7:05:b0 (on wlp1s0)
>          SSID: EE-CN589H
>          freq: 6295.0
>          RX: 537531156 bytes (3281227 packets)
>          TX: 297500287 bytes (3152968 packets)
>          signal: 0 dBm
>          rx bitrate: 3602.9 MBit/s 160MHz HE-MCS 11 HE-NSS 3 HE-GI 0 HE-DCM 0
>          bss flags: short-slot-time
>          dtim period: 2
>          beacon int: 100
> 
> Concerned we have a report of  "HE-NSS 3", wifi 7 should be eht and we have a wcn7850 which has only 2 antenna ports.
> 
> My understanding is that 160MHz HE-MCS 11 @ 160Mhz will give us 1200 Mbit/s so the report of 3602 suggests its assuming it has 3 spatial streams which would be incorrect
> 

hi david, thx a lot!
this nss value is indeed incorrect.i'm currently working on resolving 
this issue:)

> The signal level looks wrong
> 
>          signal:         0 dBm
>          beacon signal avg:      -24 dBm
> 
> we would expect that to agree with the beacon level, we see the beacon change but the signal is always 0, I note from recent messages on the thread that this has been fixed, what branch should I use to check this?
> 

the patches related to signal are currently in the public review and 
have not been merged into any branch yet.
the link to this patch-set is
https://patchwork.kernel.org/project/linux-wireless/cover/20240801112853.85508-1-quic_lingbok@quicinc.com/

/lingbo kong