$ cat /etc/config/wireless
config wifi-device 'radio0'
option type 'mac80211'
option path 'pci0000:00/0000:00:1c.0/0000:01:00.0'
option cell_density '0'
option country 'CN'
option legacy_rates '1'
option mu_beamformer '0'
option band '2g'
option channel '5'
config wifi-iface 'default_radio0'
option device 'radio0'
option mode 'ap'
option key '****'
option ssid 'MyOpenWrt'
option network 'lan'
option encryption 'psk2'
option ieee80211v '1'
option wnm_sleep_mode '1'
option bss_transition '1'
option time_advertisement '0'