Wolfgang Denk wrote:

It seems every now and then a report pops up that the Sequoia board (or now on equivalent hardware) has problems connecting to a Gigabit capable network interface. In our case, it's when the Sequoia is attached to a HP Procurve switch.

There were differences in the PHY setup between Linux and U-Boot.

This patch fixes the problem. Apparently "remote fault" is being set, which signals to some devices (on the other end of the cable) that a fault has occurred, while other devices ignore it. I believe the RF bit was causing the issue, but I removed T4 also, to match up with Linux.

Mike

diff --git a/cpu/ppc4xx/miiphy.c b/cpu/ppc4xx/miiphy.c index 4216f0b..f48e68d 100644 --- a/cpu/ppc4xx/miiphy.c +++ b/cpu/ppc4xx/miiphy.c @@ -143,7 +143,7 @@ int phy_setup_aneg (char *devname, unsigned char addr) u16 adv;

miiphy_read (devname, addr, PHY_ANAR, &adv); - adv |= (PHY_ANLPAR_ACK | PHY_ANLPAR_RF | PHY_ANLPAR_T4 | + adv |= (PHY_ANLPAR_ACK | PHY_ANLPAR_TXFD | PHY_ANLPAR_TX | PHY_ANLPAR_10FD | PHY_ANLPAR_10); miiphy_write (devname, addr, PHY_ANAR, adv);