Re: 440GX Ocotea IBM Emac driver "Cant find PHY" Error

From: Srinivas Murthy (the.srinivas_at_gmail.com)
Date: 05/31/05


Date: Tue, 31 May 2005 13:08:42 -0700

Just FYI,

The problem was that the board-level registers FPGA_REG0 - FPGA_REG4 need to
be initialized after a soft/hard reset to get the EMAC's to work.

-Srinivas

"Srinivas Murthy" <the.srinivas@gmail.com> wrote in message
news:1116834693.705896@cswreg.cos.agilent.com...
> Hi,
> I'm having a problem on my IBM 440GX Ocotea board with the ibm emac
> driver complaining "Cant find PHY" for Emac's 0 - 3.
>
> I see that the emac_phy_read() function ouputs "timeout #1" error
> message causing the "Cant find PHY" error message for each of the 4 MAC's
on
> the chip.
>
> I would think that some register/s on the board related to the
ethernet
> MAC 0 are messed up on my config and am not able to isolate the problem.
>
> Can anyone provide any pointers for me to isolate the problem?
>
> I know that there is nothing wrong with the hw itself since I can run
> the same board with a different configuration and the same linux kernel
> image.
>
> Thanks.
>
>



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