Finally port is working (using pinctrl):
[ 2.498226] Aquantia AQR114C 90000.mdio-1:08: loading firmware version 'v9.9.5 WNC SAQA-L2 082721 12:00:46' from 'FS'
[ 13.969704] aquantia_phy_api_ops_init[2241]:INFO:qca probe aquantia phy driver succeeded!
[ 158.327799] nss-dp 3a007000.dp6-syn wan: PHY Link up speed: 1000
[ 158.327879] IPv6: ADDRCONF(NETDEV_CHANGE): wan: link becomes ready
root@OpenWrt:/# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8): 56 data bytes
64 bytes from 8.8.8.8: seq=0 ttl=112 time=32.687 ms
64 bytes from 8.8.8.8: seq=1 ttl=112 time=38.285 ms
But there is no communication on QCA8075 ports...
Only link is detected.