[FS#3968] Incorrect channel reported by ath10k-*-htt firmware

[OpenWrt Bugs]

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A new Flyspray task has been opened.  Details are below. 

User who did this - cryobry (cryobry) 

Attached to Project - OpenWrt/LEDE Project
Summary - Incorrect channel reported by ath10k-*-htt firmware
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Supply the following if possible:
 - Device problem occurs on
 - Software versions of OpenWrt/LEDE release, packages, etc.
 - Steps to reproduce
   
Devices: Archer C7 v2, Linksys EA8300
OpenWRT: 21.02 rc4

Steps: 

1. (Archer) Replace default ath10k-firmware-qca988x-ct firmware with ath10k-firmware-qca988x-ct-full-htt
opkg remove ath10k-firmware-qca988x-ct && opkg install ath10k-firmware-qca988x-ct-full-htt && reboot
(EA8300) Replace default ath10k-firmware-qca4019-ct firmware with ath10k-firmware-qca4019-ct-htt
opkg remove ath10k-firmware-qca4019-ct && opkg install ath10k-firmware-qca4019-ct-htt  && reboot
2. Set wireless device to channel 36 and create an ssid
cat /etc/config/wireless: 

config wifi-device 'radio2'
	option type 'mac80211'
	option hwmode '11a'
	option path 'platform/soc/a800000.wifi'
	option htmode 'VHT80'
	option cell_density '0'
	option channel '36'

config wifi-iface 'wifinet6'
	option device 'radio2'
	option mode 'ap'
	option ssid 'ssid'
	option encryption 'sae'
	option key 'xxxxxxx'
	option ieee80211w '2'
	option wds '1'
	option network 'lan'

3. iwinfo and luci reports operation on channel 40:
Archer:
wlan0-1   ESSID: "ssid"
          Access Point: XX:XX:XX:XX:XX
          Mode: Client  Channel: 40 (5.200 GHz)
          Center Channel 1: 42 2: unknown
          Tx-Power: 20 dBm  Link Quality: 52/70
          Signal: -58 dBm  Noise: -102 dBm
          Bit Rate: 351.0 MBit/s
          Encryption: WPA3 SAE (CCMP)
          Type: nl80211  HW Mode(s): 802.11nac
          Hardware: 168C:003C 0000:0000 [Qualcomm Atheros QCA9880]
          TX power offset: none
          Frequency offset: none
          Supports VAPs: yes  PHY name: phy0

EA8300:
wlan2     ESSID: "ssid"
          Access Point: XX:XX:XX:XX:XX
          Mode: Master  Channel: 40 (5.200 GHz)
          Center Channel 1: 42 2: unknown
          Tx-Power: 23 dBm  Link Quality: 31/70
          Signal: -79 dBm  Noise: -105 dBm
          Bit Rate: 866.7 MBit/s
          Encryption: WPA3 SAE (CCMP)
          Type: nl80211  HW Mode(s): 802.11nac
          Hardware: 168C:003C 168C:4019 [Qualcomm Atheros IPQ4019]
          TX power offset: none
          Frequency offset: none
          Supports VAPs: yes  PHY name: phy2


My wifi analyzers show that the signal is actually on channel 36, it is just reported incorrectly by the firmware.
 

More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=3968

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