====== QCA wifi驱动强制为HT40 ======

1.如果是mac80211的qca驱动，可以设置：

  uci set wireless.radio0.noscan=1

  uci commit

  /etc/init.d/network restart

 

2. 如果是umac的qca驱动，可以用命令行设置：

  iwpriv ath0 disablecoext 1


====== 强制HT40 ======
<code>
iwpriv ath0 disablecoext 0
0 = 啟用 coext
1 = 关闭(强制HT40)
查看
~ # iwpriv ath0 get_disablecoext
ath0      get_disablecoext:0
</code>

====== OpenWRT ======
add below to /etc/config/wireless
<code>
config wifi-iface
  option disablecoext '1'
</code>