<br><font size=2 face="sans-serif">Hi the community,</font>
<br>
<br><font size=2 face="sans-serif">I encountered the "transmit timed
out" problem when I try to bring up the FCC on an mpc8541 based board.</font>
<br><font size=2 face="sans-serif">I found there are a lot of such issues
posted in the list, unfortunately, I didn't find a workaround could solve
my problem.</font>
<br>
<br><font size=2 face="sans-serif">The FCC port works fine under U-boot,
I can ping the host and download files from TFTP server, so the tx/rx clk
route should be no problem. The command line U-boot transfer to Linux Kernel
should be fine too, because kernel startup message says: IP-Config Complete
...</font>
<br>
<br><font size=2 face="sans-serif">When I tried to ping the host after
Linux is up, I got the following dumped messages:</font>
<br>
<br><font size=2 face="sans-serif">PING 192.168.1.2 (192.168.1.2) from
192.168.1.192 : 56(84) bytes of data.</font>
<br><font size=2 face="sans-serif">From 192.168.1.192: Destination Host
Unreachable</font>
<br><font size=2 face="sans-serif">From 192.168.1.192: Destination Host
Unreachable</font>
<br><font size=2 face="sans-serif">From 192.168.1.192: Destination Host
Unreachable</font>
<br><font size=2 face="sans-serif">From 192.168.1.192: Destination Host
Unreachable</font>
<br><font size=2 face="sans-serif">From 192.168.1.192: Destination Host
Unreachable</font>
<br><font size=2 face="sans-serif">From 192.168.1.192: Destination Host
Unreachable</font>
<br><font size=2 face="sans-serif">NETDEV WATCHDOG: eth0: transmit timed
out</font>
<br><font size=2 face="sans-serif">eth0: transmit timed out.</font>
<br><font size=2 face="sans-serif"> Ring data dump: cur_tx c0218100
tx_free 0 cur_rx c0218000.</font>
<br><font size=2 face="sans-serif"> Tx @base c0218100 :</font>
<br><font size=2 face="sans-serif">1c01 0062 0039e962</font>
<br><font size=2 face="sans-serif">1c01 0062 0039e662</font>
<br><font size=2 face="sans-serif">1c01 0062 0039e862</font>
<br><font size=2 face="sans-serif">1c01 0062 0039ea62</font>
<br><font size=2 face="sans-serif">5c01 002a 07f45de2</font>
<br><font size=2 face="sans-serif">5c01 002a 07f45e62</font>
<br><font size=2 face="sans-serif">5c01 002a 07f45ee2</font>
<br><font size=2 face="sans-serif">5c01 002a 07f45f62</font>
<br><font size=2 face="sans-serif">5c01 002a 07a2b0a2</font>
<br><font size=2 face="sans-serif">5c01 002a 07a2b122</font>
<br><font size=2 face="sans-serif">5c01 002a 07a2b1a2</font>
<br><font size=2 face="sans-serif">5c01 002a 07a2b222</font>
<br><font size=2 face="sans-serif">5c01 002a 07a2b2a2</font>
<br><font size=2 face="sans-serif">5c01 002a 07a2b322</font>
<br><font size=2 face="sans-serif">5c01 002a 07a2b3a2</font>
<br><font size=2 face="sans-serif">7c01 002a 07a2b422</font>
<br><font size=2 face="sans-serif"> Rx @base c0218000 :</font>
<br><font size=2 face="sans-serif">1c80 0040 07706000</font>
<br><font size=2 face="sans-serif">1c80 0040 07706800</font>
<br><font size=2 face="sans-serif">1c80 0040 07705000</font>
<br><font size=2 face="sans-serif">1c00 0040 07705800</font>
<br><font size=2 face="sans-serif">1c00 0040 07704000</font>
<br><font size=2 face="sans-serif">1c00 0040 07704800</font>
<br><font size=2 face="sans-serif">1c00 0040 07703000</font>
<br><font size=2 face="sans-serif">1c00 0040 07703800</font>
<br><font size=2 face="sans-serif">1c00 0040 07702000</font>
<br><font size=2 face="sans-serif">1c00 0040 07702800</font>
<br><font size=2 face="sans-serif">1c00 0040 07701000</font>
<br><font size=2 face="sans-serif">1c00 0040 07701800</font>
<br><font size=2 face="sans-serif">1c00 0040 07700000</font>
<br><font size=2 face="sans-serif">1c00 0040 07700800</font>
<br><font size=2 face="sans-serif">1c00 0040 003ff000</font>
<br><font size=2 face="sans-serif">9000 0000 003ff800</font>
<br><font size=2 face="sans-serif">9000 0000 003fe000</font>
<br><font size=2 face="sans-serif">9000 0000 003fe800</font>
<br><font size=2 face="sans-serif">9000 0000 003fd000</font>
<br><font size=2 face="sans-serif">9000 0000 003fd800</font>
<br><font size=2 face="sans-serif">9000 0000 003fc000</font>
<br><font size=2 face="sans-serif">9000 0000 003fc800</font>
<br><font size=2 face="sans-serif">9000 0000 003fb000</font>
<br><font size=2 face="sans-serif">9000 0000 003fb800</font>
<br><font size=2 face="sans-serif">9000 0000 003fa000</font>
<br><font size=2 face="sans-serif">9000 0000 003fa800</font>
<br><font size=2 face="sans-serif">9000 0000 003f9000</font>
<br><font size=2 face="sans-serif">9000 0000 003f9800</font>
<br><font size=2 face="sans-serif">9000 0000 003f8000</font>
<br><font size=2 face="sans-serif">9000 0000 003f8800</font>
<br><font size=2 face="sans-serif">9000 0000 003f7000</font>
<br><font size=2 face="sans-serif">b000 0000 003f7800</font>
<br><font size=2 face="sans-serif">NETDEV WATCHDOG: eth0: transmit timed
out</font>
<br><font size=2 face="sans-serif">eth0: transmit timed out.</font>
<br><font size=2 face="sans-serif">......</font>
<br>
<br><font size=2 face="sans-serif">The last bit of TxBD_CSR is 1, which
means "Carrier Sense Lost", I have no idea about why this could
happen.</font>
<br>
<br><font size=2 face="sans-serif">I captured the package at the host side,
the host had received the ARP request package and had also sent the ARP
reply package, however, no ICMP package followed.</font>
<br>
<br><font size=2 face="sans-serif">The Linux version is 2.4.20.</font>
<br>
<br><font size=2 face="sans-serif">Any comment will be appreciated!</font>
<br>
<br><font size=2 face="sans-serif">(PS: sorry for my poor English.)</font>
<br>
<br><font size=2 face="sans-serif">Thanks & Best Regards,<br>
Stephen C.</font>