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);
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