[U-Boot] Disable features

[Jean-Christophe PLAGNIOL-VILLARD]

On 09:36 Fri 01 May     , Wolfgang Denk wrote:
> Dear Derek Ou,
> 
> In message <49FA2FFD.3000506 at siconix.com> you wrote:
> > 
> > Yes, CONFIG_RESET_PHY_R is defined by default.  And I can see it linking to
> > the eth_init and then macb_init which results in the auto-negotiation.  
> > I am going to
> > comment it out and test it.  But what is the use for this config?  Why 
> > does ATMEL
> > define it in many of their boards?
> 
> It makes no sense to me to reset the PHY when no network command is
> being used. I imagine this might be a workaround for broken Linux
> drivers which do not correctly initialize the hardware themself.
correct
IIRC if you do not do it the net drivers will have no mac address
and you will not be alllow to use nfs as rootfs

Best Regards,
J.