Hi Jocke,
>> > Instead of always performing an autoneg, check if the PHY
>> > already has a link and if it matches one of the requested
>> > modes. Initially only 100MbFD is optimized this way.
>>
>> Isn't it about time that we think about _not_ stopping the ethernet
>> device after every transaction?
>
> Hi Detlev
>
> UEC does this already, my patch was to address the initial delay
> you get for the first transaction. Now my PHY based boards gets the link
> up just as quick as Fixed PHY for the first transaction.
Forgive me to not look into this any deeper, but do I understand you
correctly that you do this by essentially no-oping the eth_halt()
function? Isn't this then effectively violating what net.c expects the
device to do?
I was thinking that net.c itself should not do this continous start/stop
thing as it has problems on many interfaces. On one ARM machine I've
again seen problems with the MAC address programming because the
eth_halt() resets the controller and so it forgets its address again.
Also the USB-CDC example where the _whole interface_ on the host side is
being torn down after each tftp transfer prompts me to think along this
line.
So in effect I guess my response was rather a ping to Ben, sorry for
that ;)
Cheers
Detlev
--
Peace of mind isn't at all superficial to technical work. It's the
whole thing. That which produces it is good work and that which
destroys it is bad work.
-- Robert M. Pirsig
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: d...@denx.de
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
