[U-Boot-Users] MPC8541CDS board PHY interface

Jerry Van Baren gvb.uboot at gmail.com
Wed Feb 27 03:47:57 CET 2008


M Ravi Prakash Reddy wrote:
>  Hi,

Hi Ravi,

[snip]

>   As per  MPC8555ERM.pdf document TX_CLK for the PHY will be supplied by 
> the powerPC in RGMII mode . In our case we are not getting this clock. 
> We are not able to ping our board.

Be aware that u-boot has a "ping" command that you can use to ping 
*other* computers.  U-boot does *NOT* respond to a ping from another 
computer (short explanation: u-boot is a simple polled mode program).

>    we want to know what all changes are required in the U-Boot code to 
> initialize the PowerPC for RGMII operation.

Answered by Manish Jaggi (I'm not qualified to answer this).

> Thanks & regards
> M Ravi

HTH,
gvb




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