[U-Boot-Users] AMCC 4XX (specially 405EP) and CFG_RX_ETH_BUFFERS
sr at denx.de
Wed Apr 26 10:08:24 CEST 2006
On Wednesday, 26. April 2006 01:56, Tolunay Orkun wrote:
> Is there a valid range for number of RX buffers for AMCC405EP Ethernet
> I am using a fairly recent U-Boot from GIT and if I define
> CFG_RX_ETH_BUFFERS 31 it works but if I use CFG_RX_ETH_BUFFERS 32 it has
> a lot of timeouts in tftp etc.
Hmmm. I didn't expected this. I would recommend to use at least 16 buffer. If
what you say is true (which I don't doubt), then there seems to be a problem
in the 4xx ethernet driver.
Sorry but I don't have the time to dig into this right now. I would really
appreciate it, if you could find the reason for this strange behavior and
come up with a patch for it. :-)
If not, please use 16 for now. This is what is used on most 405 platforms and
works quite well.
More information about the U-Boot