[U-Boot] [PATCH] Bugfix: mpc512x_fec MII accesses fail after ethernet transfers

Wolfgang Denk
2009-07-19T18:50:47Z

Dear =?ISO-8859-1?Q?Thomas_D=F6rfler?=,

In message <4A635D1F.9030402@embedded-brains.de> you wrote:
>
> on our custom MPC5121 board I used the following sequence to see the bug:
>
> - After U-Boot stated, I could inspect the status of the PHY with "mii
> info". This works fine even if repeated.
>
> - then I trigger some network activity, for example with "ping"
>
> - if I try to get the PHY status with "mii info" AFTER that network
> activity, the command fails (it does not even detect, that a PHY is
> connected).

Thanks for the explanation; I can reproduce this problem on the boards
we have in our lab, too.

Best regards,

Wolfgang Denk

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