* [U-Boot-Users] SMSC91C111 performance...
@ 2004-02-26 15:14 Richard Klingler
2004-02-26 18:20 ` Stephan Linz
0 siblings, 1 reply; 3+ messages in thread
From: Richard Klingler @ 2004-02-26 15:14 UTC (permalink / raw)
To: u-boot
Evening (o;
Users of SMSC91C111 chips...
What is the performance of the driver inside u-boot?
Get around up to 2 secs delay to "ping alive" and
downloading a 2.5MByte binary with tftp takes up to 7 secs.
At least downliading works without errors on BF533 (o;
rick
^ permalink raw reply [flat|nested] 3+ messages in thread
* [U-Boot-Users] SMSC91C111 performance...
2004-02-26 15:14 [U-Boot-Users] SMSC91C111 performance Richard Klingler
@ 2004-02-26 18:20 ` Stephan Linz
0 siblings, 0 replies; 3+ messages in thread
From: Stephan Linz @ 2004-02-26 18:20 UTC (permalink / raw)
To: u-boot
> What is the performance of the driver inside u-boot?
>
>
> Get around up to 2 secs delay to "ping alive" and
Yes, the SMSC91C111 has an very long auto-negotation cycle...
> downloading a 2.5MByte binary with tftp takes up to 7 secs.
Wow, about 3 MBit -- that's good for the Chip. The SMSC91C111 self isn't
fast enough. It has an non performant chip design (there are only 2x2KByte
for FIFO). My latest tests with an PXA255 a/o NIOS + SMSC91C111 @ 32 bit bus
results the same...
Best Regards,
Stephan Linz
^ permalink raw reply [flat|nested] 3+ messages in thread
* [U-Boot-Users] SMSC91C111 performance...
@ 2004-02-26 18:22 Richard Klingler
0 siblings, 0 replies; 3+ messages in thread
From: Richard Klingler @ 2004-02-26 18:22 UTC (permalink / raw)
To: u-boot
> > What is the performance of the driver inside u-boot?
> >
> >
> > Get around up to 2 secs delay to "ping alive" and
>
> Yes, the SMSC91C111 has an very long auto-negotation cycle...
>
> > downloading a 2.5MByte binary with tftp takes up to 7 secs.
>
> Wow, about 3 MBit -- that's good for the Chip. The SMSC91C111 self
isn't
> fast enough. It has an non performant chip design (there are only
> 2x2KByte
> for FIFO). My latest tests with an PXA255 a/o NIOS + SMSC91C111 @ 32
bit
> bus
> results the same...
>
Seems also tftp download is corrupting some packets...at least
uclinux for BF533 always ends in panic...but not with same
image loaded through VisualDSP...
Maybe should test first with loads (o;
rick
^ permalink raw reply [flat|nested] 3+ messages in thread
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2004-02-26 15:14 [U-Boot-Users] SMSC91C111 performance Richard Klingler
2004-02-26 18:20 ` Stephan Linz
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