imx6ul linux 蓝牙

Question

....在inx6ull linux平台，使用USB蓝牙，接入后hciconfig可以看到蓝牙信息，但是hciconfig hic0 up 失败（Can't init device hci0: Invalid argument (22)），具体如下：
root@ATK-IMX6U:~/shell/bluetooth# hciconfig
hci0: Type: BR/EDR Bus: USB
BD Address: 00:1A:7D:DA:71:13 ACL MTU: 679:8 SCO MTU: 48:16
DOWN
RX bytes:1412 acl:0 sco:0 events:44 errors:0
TX bytes:136 acl:0 sco:0 commands:44 errors:0

root@ATK-IMX6U:/shell/bluetooth#
root@ATK-IMX6U:/shell/bluetooth# hciconfig hci0 up
Can't init device hci0: Invalid argument (22)
....

Answer 1

• 看下这篇博客，也许你就懂了，链接：【linux网络】imx6ul网卡驱动分析