Hi,
very similar post to: 21.02 same problem
I'm seeing the exact same behaviour with the 5G radio net coming up.
root@OpenWrt:/# dmesg | grep ath10k
[ 15.798961] ath10k 5.15 driver, optimized for CT firmware, probing pci device: 0x3c.
[ 15.808286] ath10k_pci 0000:00:00.0: enabling device (0000 -> 0002)
[ 15.814828] ath10k_pci 0000:00:00.0: pci irq legacy oper_irq_mode 1 irq_mode 0 reset_mode 0
[ 18.395894] ath10k_pci 0000:00:00.0: qca988x hw2.0 target 0x4100016c chip_id 0x043202ff sub 0000:0000
[ 18.405315] ath10k_pci 0000:00:00.0: kconfig debug 0 debugfs 1 tracing 0 dfs 1 testmode 0
[ 18.417233] ath10k_pci 0000:00:00.0: firmware ver 10.1-ct-8x-__fW-022-ecad3248 api 2 features wmi-10.x,has-wmi-mgmt-tx,mfp,txstatus-noack,wmi-10.x-CT,ratemask-CT,txrate-CT,get-temp-CT,tx-rc-CT,cust-stats-CT,retry-gt2-CT,txrate2-CT,beacon-cb-CT,wmi-block-ack-CT crc32 3e4cf97f
[ 18.532136] ath10k_pci 0000:00:00.0: Loading BDF type 0
[ 19.149088] ath10k_pci 0000:00:00.0: board_file api 1 bmi_id N/A crc32 bebc7c08
[ 20.094510] ath10k_pci 0000:00:00.0: 10.1 wmi init: vdevs: 16 peers: 127 tid: 256
[ 25.142080] ath10k_pci 0000:00:00.0: wmi unified ready event not received
[ 25.275386] ath10k_pci 0000:00:00.0: could not init core (-145)
[ 25.281529] ath10k_pci 0000:00:00.0: could not probe fw (-145)
5Ghz worked fine under 19.07 (ar71xx)
any ideas on how to get it working with ath79 ?
thanks!