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| author | Mike Nuss <mike@terascala.com> | 2008-03-03 15:27:05 -0500 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2008-03-04 08:55:27 +0100 |
| commit | 74eb0222594fd23aafdf168e60e872814eea8b62 (patch) | |
| tree | a7457dea0e4058141886f01f5edc931e7eaecb29 /cpu | |
| parent | 491fb6dea9f52fdb9cb5996e8e978b9e9685179f (diff) | |
| download | talos-obmc-uboot-74eb0222594fd23aafdf168e60e872814eea8b62.tar.gz talos-obmc-uboot-74eb0222594fd23aafdf168e60e872814eea8b62.zip | |
PPC4xx (Sequoia): Fix Ethernet "remote fault" problems
Every now and then a Sequoia board (or equivalent hardware) had
problems connecting to a Gigabit capable network interface.
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.
Signed-off-by: Mike Nuss <mike@terascala.com>
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/ppc4xx/miiphy.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/cpu/ppc4xx/miiphy.c b/cpu/ppc4xx/miiphy.c index 4216f0bd41..3978773f9f 100644 --- a/cpu/ppc4xx/miiphy.c +++ b/cpu/ppc4xx/miiphy.c @@ -143,9 +143,8 @@ 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 | - PHY_ANLPAR_TXFD | PHY_ANLPAR_TX | PHY_ANLPAR_10FD | - PHY_ANLPAR_10); + adv |= (PHY_ANLPAR_ACK | PHY_ANLPAR_TXFD | PHY_ANLPAR_TX | + PHY_ANLPAR_10FD | PHY_ANLPAR_10); miiphy_write (devname, addr, PHY_ANAR, adv); miiphy_read (devname, addr, PHY_1000BTCR, &adv); |
