ucc_geth: Fix the wrong the Rx/Tx FIFO size

Anton Vorontsov avorontsov at ru.mvista.com
Thu Dec 10 10:00:15 EST 2009

On Fri, Nov 27, 2009 at 04:16:43PM +0800, Dave Liu wrote:
> current the Rx/Tx FIFO size settings cause problem
> when four UEC ethernets work simultaneously.
> eg: GETH1, UEM-J15, GETH2, UEC-J5 on 8569MDS board
>  $ ifconfig eth0
>  $ ifconfig eth1
>  $ ifconfig eth2
>  then
>  $ ifconfig eth3
> The fourth ethernet will cause all of interface broken,
> you cann't ping successfully any more.
> The patch fix this issue for MPC8569 Rev1.0 and Rev2.0
> Signed-off-by: Dave Liu <daveliu at freescale.com>

Acked-by: Anton Vorontsov <avorontsov at ru.mvista.com>

Thanks Dave! I see that the new values actually match the QEIWRM
spec (except UTFS... spec recommends 2048, but it also says that
it might differ for different memory setups, though that's a
separate issue).

And FWIW, I did some quick netperf tests on MPC8360, and the
patch doesn't cause any problems.

Anton Vorontsov
email: cbouatmailru at gmail.com

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