* [U-Boot-Users] AMCC 4XX (specially 405EP) and CFG_RX_ETH_BUFFERS
@ 2006-04-25 23:56 Tolunay Orkun
2006-04-26 8:08 ` Stefan Roese
0 siblings, 1 reply; 2+ messages in thread
From: Tolunay Orkun @ 2006-04-25 23:56 UTC (permalink / raw)
To: u-boot
Hi,
Is there a valid range for number of RX buffers for AMCC405EP Ethernet
driver?
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.
Best regards,
Tolunay
^ permalink raw reply [flat|nested] 2+ messages in thread
* [U-Boot-Users] AMCC 4XX (specially 405EP) and CFG_RX_ETH_BUFFERS
2006-04-25 23:56 [U-Boot-Users] AMCC 4XX (specially 405EP) and CFG_RX_ETH_BUFFERS Tolunay Orkun
@ 2006-04-26 8:08 ` Stefan Roese
0 siblings, 0 replies; 2+ messages in thread
From: Stefan Roese @ 2006-04-26 8:08 UTC (permalink / raw)
To: u-boot
Hi Tolunay,
On Wednesday, 26. April 2006 01:56, Tolunay Orkun wrote:
> Is there a valid range for number of RX buffers for AMCC405EP Ethernet
> driver?
>
> 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.
Best regards,
Stefan
^ permalink raw reply [flat|nested] 2+ messages in thread
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2006-04-25 23:56 [U-Boot-Users] AMCC 4XX (specially 405EP) and CFG_RX_ETH_BUFFERS Tolunay Orkun
2006-04-26 8:08 ` Stefan Roese
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