The DM355 has been connected for nearly 2 days to the 3Com 'Office Connect' switch and in that time has been rebooted plenty of times (due to me working on a 'small' root filesystem). So far the ethernet has never failed to start, which is a big improvement over what it was doing when connected to the Netgear FS108. Perhaps we should start a list of switches that work and another that do not? Regards Phil Q Phil Quiney, Senior Software Engineer Trinity Convergence Cambridge Business Park Cowley Road Cambridge CB4 0WZ, UK T: +44(0)1223-435536 F: +44(0)1223-435560 www.trinityconvergence.com <http://www.trinityconvergence.com/>
________________________________ From: BJ Opp [mailto:[EMAIL PROTECTED] Sent: 26 March 2008 18:15 To: Maupin, Chase; Chu, Owen; Phil Quiney; [email protected] Subject: RE: DM355 Ethernet Start failure I'm using an HP switch, but I've never had an issue connecting when using my dm6446 hardware or anything else using the network. I wish I could gather more info regarding what is causing the problems but as far as I can tell it's completely intermittent. I have found that unplugging the network cable then replugging will fix the network issues. Maybe I'll try a new switch just to see if for some reason this Ethernet chip has a problem with the hp. ________________________________ From: Maupin, Chase [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 26, 2008 10:01 AM To: Chu, Owen; BJ Opp; Phil Quiney; [email protected] Subject: RE: DM355 Ethernet Start failure I have seen issues with not being able to get dhcp or get a network connection when using particular switches. Do you have a different switch that you can try? Linksys seems to work well. Sincerely, Chase Maupin Software Applications Catalog DSP Products e-mail: [EMAIL PROTECTED] phone: (281) 274-3285 ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chu, Owen Sent: Wednesday, March 26, 2008 11:58 AM To: BJ Opp; Phil Quiney; [email protected] Subject: RE: DM355 Ethernet Start failure Phil, BJ, We have not seen problems as you described in our daily use of tftp download in u-boot and using NFS in kernel. If you can gather more info as to what specific condition can cause this to happen then it will be very helpful. In u-boot occasionally we saw 'checksum errors' or 'T' (timeout) but it always finishes tftp download. Note that u-boot and kernel uses different DM9000 drivers so please point out exactly where it happens. Thanks Owen ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of BJ Opp Sent: Wednesday, March 26, 2008 12:32 PM To: Phil Quiney; [email protected] Subject: RE: DM355 Ethernet Start failure I've seen the same problem with our dm355 eval boards. Every once in a while it will fail to tftpboot (just prints a 'T' character every 3 seconds or so). Sometimes it will fail to dhcp as it claims the link is down. As you saw the problem is usually 'fixed' by doing a reset but this is hardly a proper solution. If anybody has run across this and fixed it completely, what did you do? I had posted something regarding this issue about a mont or 2 ago and the responses were along the lines of _that's how the DM9000 ehternet controller is_. Thanks BJ ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Phil Quiney Sent: Wednesday, March 26, 2008 6:35 AM To: [email protected] Subject: DM355 Ethernet Start failure Hi, We have 2 DM355 Boards and both show a problem where the ethernet sometimes fails to come up when the board boots. Do other people see this? If you boot a Linux kernel from FLASH with NFS root filesystem it gets as far as the DHCP request for its IP address (kernel autoconfig) and never gets an address. Booting with a FLASH kernel and FLASH filesystem with no kernel autoconfig but 'dhcpcd' enabled, again the DHCP request is never answered. Also, just booting into u-boot can fail to transfer files (static addresses of DM355 & TFTP server). In all cases rebooting, pressing the reset button or power cycling the board usually fixes it. Regards Phil Q Phil Quiney, Senior Software Engineer Trinity Convergence Cambridge Business Park Cowley Road Cambridge CB4 0WZ, UK T: +44(0)1223-435536 F: +44(0)1223-435560 www.trinityconvergence.com <http://www.trinityconvergence.com/>
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