maybe the problem i described is not clear,  i have already pluggled  the cable into my board. the detail operations list as below:

1.plugged the cable into my embeded board, and another port connect to my computer(win10).
2.power on the board without starting the network service in the bulid configeration file.  etc,
    #display_msg Starting Networking
    #io-pkt-v6-hc -dmx6x
    #if_up -p fec0
    #ifconfig fec0 up
    #dhclient -nw fec0
3. the led of the net port in board and computer is on and blinking, at this time  the phy is not init because i do not start the service.
4. when i input io-pkt-v6-hc -d mx6x in the command line, the led is off, and the link becomes down, the nicinfo and ifconfig info in the last email 

the key point of this problem is why the status of ifconfig info is always  no carrier,  not  active. Have you ever encountered such problems before?
another question is  the Current Operation Rate of nicinfo is always unknown, what does this means ? which register is this read?

thank you very much!





------------------ 原始邮件 ------------------
发件人: "Hugh Brown";<community-noreply@qnx.com>;
发送时间: 2017年9月15日(星期五) 晚上8:26
收件人: "drivers-networking@community.qnx.com"<drivers-networking@community.qnx.com>;
主题: Re: [atheros] status is always no carrier

Are you using a crossover cable to connect to your win10 machine? Have you tried plugging the cable into a switch?

On 2017-09-15, 4:10 AM, "blinking" <community-noreply@qnx.com> wrote:

    hello,drivers-networking engineer:
   
   
        My Development Environment
          Host: Ubuntu 14.       Qnx: SDP 7.0      Target: iMx6q Sabre Auto/AI   
    I face a strange problem when i am debugging  phy(atheros ar8095) driver on imx6q board,  when i have started the io-pkt service and configed ip, the nicinfo changes below:
      --> nicinfo
        fec0:
      i.MX6 Ethernet Controller
   
   
      Link is DOWN
   
   
      Physical Node ID ........................... 000012 345678
      Current Physical Node ID ................... 000012 345678
      Current Operation Rate ..................... Unknown
      Active Interface Type ...................... MII
        Active PHY address ....................... 0
      Maximum Transmittable data Unit ............ 1500
      Maximum Receivable data Unit ............... 1500
      Hardware Interrupt ......................... 0x96
      Hardware Interrupt ......................... 0x97
      Memory Aperture ............................ 0x2188000 - 0x2188fff
      Memory Aperture ............................ 0x2098000 - 0x2098fff
      Promiscuous Mode ........................... Off
      Multicast Support .......................... Enabled
     
    and the network port status is :
      -->ifconfig
    fec0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    address: 00:00:12:34:56:78
    media: Ethernet 10baseT full-duplex (none)
    status: no carrier
    inet 192.168.1.11 netmask 0xffffff00 broadcast 192.168.1.255
    inet6 fe80::200:12ff:fe34:5678%fec0 prefixlen 64 scopeid 0x11
   
   
   
    whatever the configuration of the phy has made,the  fec0's status is always no carrier. by the way, cable is connected to my win10 computer.
   
   
    do you have any suggestions to my problem? thank u!
   
   
   
    _______________________________________________
   
    Networking Drivers
    http://community.qnx.com/sf/go/post118034
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