BPI-CM4 IO: RTW88: Realtek 8822CS SDIO Wireless Support

Additional driver support: Realtek 8822BS SDIO wireless network adapter Realtek 8822BU USB wireless network adapter Realtek 8822CS SDIO wireless network adapter Realtek 8822CU USB wireless network adapter Realtek 8821CS SDIO wireless network adapter Realtek 8821CU USB wireless network adapter

Jira reference number AR-1724

How Has This Been Tested?

Built a new kernel with the latest changes, installed it, added required firmware and rebooted.

 ____  ____  _    ____ __  __ _  _  ___ ___  
| __ )|  _ \(_)  / ___|  \/  | || ||_ _/ _ \ 
|  _ \| |_) | | | |   | |\/| | || |_| | | | |
| |_) |  __/| | | |___| |  | |__   _| | |_| |
|____/|_|   |_|  \____|_|  |_|  |_||___\___/ 
                                             
Welcome to Armbian 23.05.0-trunk Bookworm with Linux 6.1.30-meson64

No end-user support: built from trunk

System load:   2%           Up time:       31 min
Memory usage:  4% of 3.69G  IP:       10.0.0.XXX
CPU temp:      52°C           Usage of /:    6% of 30G    
RX today:      4.9 MiB  

[ 0 security updates available, 19 updates total: apt upgrade ]
Last check: 2023-05-25 07:50

Last login: Tue May 23 14:27:27 2023

lsmod | grep rtw
rtw88_8822cs           16384  0
rtw88_8822c           462848  1 rtw88_8822cs
rtw88_sdio             20480  1 rtw88_8822cs
rtw88_core            159744  2 rtw88_8822c,rtw88_sdio
mac80211              606208  2 rtw88_sdio,rtw88_core
cfg80211              430080  2 rtw88_core,mac80211

sudo iwconfig
lo        no wireless extensions.

end0      no wireless extensions.

wlan0     IEEE 802.11  ESSID:"XXX"  
          Mode:Managed  Frequency:5.785 GHz  Access Point: A2:3D:CF:FF:C5:EB   
          Bit Rate=175.5 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=62/70  Signal level=-48 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:28   Missed beacon:0

Checklist:

• [ ] My code follows the style guidelines of this project
• [ ] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [X] My changes generate no new warnings
• [ ] Any dependent changes have been merged and published in downstream modules

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