add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

1
2
3
4
5
6
7
What:        /sys/class/net/<iface>/dsa/tagging
Date:        August 2018
KernelVersion:    4.20
Contact:    netdev@vger.kernel.org
Description:
        String indicating the type of tagging protocol used by the
        DSA slave network device.