I seem to be having a problem with the soft reset of EMAC
mode register when I have no ethernet connection to by phy.
After this code in init_ppc405_enet(void) the SRST bit does
not clear until after I stick in a cable.
/* Reset the EMAC */
emacp->em0mr0 = EMAC_M0_SRST;
eieio();
for (delay = 0; delay < 1000; delay++) ;
emacp->em0mr0 = emacp->em0mr0 & ~EMAC_M0_SRST;
eieio();
printk( KERN_INFO "em0mr0 %08x", emacp->em0mr0 );
This causes problems in find_phy, since phy_reg never gets set to
a value and read_mdio fails.
I have a Rev E chip, but since I always booted over the net with the
Walnut board I don't think I even tried to boot without an ethernet
connection.
Just checking to see if anyone else has noticed what their 405gp does
when it doesn't have a connection during the linux boot.
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