Jouni Malinen [off-list ref] wrote:

WCN6855 uses single_pdev_only, so it supports both the 5G and 6G bands
in the same ath11k/pdev and it needs to enable ht_cap/vht_cap for the 5G
band, otherwise it will downgrade to non-HT mode for the 5G band. Some
chips like QCN9074 only support the 6G band, not the 5G band, and use
the flag ar->supports_6ghz which is true to discard ht_cap/vht_cap.

Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-01720.1-QCAHSPSWPL_V1_V2_SILICONZ_LITE-1

Signed-off-by: Wen Gong <redacted>
Signed-off-by: Jouni Malinen <redacted>
Signed-off-by: Kalle Valo <redacted>

3 patches applied to ath-next branch of ath.git, thanks.

54f40f552afd ath11k: re-enable ht_cap/vht_cap for 5G band for WCN6855
74bba5e5ba45 ath11k: enable 6G channels for WCN6855
0f17ae43823b ath11k: copy cap info of 6G band under WMI_HOST_WLAN_5G_CAP for WCN6855

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20210804181217.88751-2-jouni@codeaurora.org/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches