We replaced db4’s wifi chip with wcn3680, which itself supports 5ghz. When we adapt to version 17.09, we can search for 5ghz, and then upgrade to 19.01, the board cannot recognize 5g wifi. Has anyone ever encountered this situation? What do you need to change about the kernel? Give me some advice. Any idea will do. Thank you
Here’s the partial log
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[ 12.296377] msm 1a00000.mdss: loaded qcom/a300_pm4.fw from legacy location
[ 12.296767] msm 1a00000.mdss: loaded qcom/a300_pfp.fw from legacy location
root@linaro-alip:~# [ 16.354602] qcom_wcnss_ctrl remoteproc0:smd-edge.WCNSS_CTRL.-1.-1: expected cold boot completion
[ 16.389219] Bluetooth: Core ver 2.22
[ 16.389559] NET: Registered protocol family 31
[ 16.391942] Bluetooth: HCI device and connection manager initialized
[ 16.396163] Bluetooth: HCI socket layer initialized
[ 16.400558] wcn36xx: mac address: 02:00:ab:6e:5a:01
[ 16.402675] Bluetooth: L2CAP socket layer initialized
[ 16.402709] Bluetooth: SCO socket layer initialized
[ 16.407700] can get iris wcn3680
[ 16.422105] NL80211_BAND_5GHZ
[ 16.453399] btqcomsmd a204000.wcnss:smd-edge:wcnss:bt: BD address 02:00:ab:6e:5a:00 retrieved from device-tree
[ 16.519895] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 16.648280] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 16.648304] Bluetooth: BNEP filters: protocol multicast
[ 16.652736] Bluetooth: BNEP socket layer initialized
[ 18.562604] Bluetooth: hci0 command 0xfc0b tx timeout
[ 18.682635] Bluetooth: RFCOMM TTY layer initialized
[ 18.682681] Bluetooth: RFCOMM socket layer initialized
[ 18.686336] Bluetooth: RFCOMM ver 1.11
[ 19.932501] wcn36xx: firmware WLAN version ‘WCN v2.0 RadioPhy vIris_TSMC_3.0 with 48MHz XO’ and CRM version ‘CNSS-PR-2-0-1-2-c1-74-130449-3’
[ 19.932536] wcn36xx: firmware API 1.5.1.2, 41 stations, 2 bssids
[ 19.955744] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 19.993461] alloc_contig_range: [beca0, beca5) PFNs busy
[ 20.285652] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 20.453649] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 39.782756] Seconds value to be written to RTC = 1574989759
[ 365.349655] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 681.360969] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 709.764341] Seconds value to be written to RTC = 1574990429
[ 997.342501] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 1313.329038] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 1382.765240] Seconds value to be written to RTC = 1574991102
[ 1629.375143] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready