As noticed on a custom 440GX board using the Micrel KSZ8041 PHY in
fiber mode, a strapped fixed PHY configuration will currently restart
the autonegotiation. This patch checks the BMCR_ANENABLE bit and
skips this autonegotiation if its disabled.
Signed-off-by: Stefan Roese <s...@denx.de>
Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org>
---
drivers/net/ibm_newemac/phy.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/net/ibm_newemac/phy.c b/drivers/net/ibm_newemac/phy.c
index ac9d964..90afc58 100644
--- a/drivers/net/ibm_newemac/phy.c
+++ b/drivers/net/ibm_newemac/phy.c
@@ -116,6 +116,11 @@ static int genmii_setup_aneg(struct mii_phy *phy, u32
advertise)
ctl = phy_read(phy, MII_BMCR);
if (ctl < 0)
return ctl;
+
+ /* Don't start auto negotiation when its disabled in BMCR */
+ if (!(ctl & BMCR_ANENABLE))
+ return 0;
+
ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_SPEED1000 |
BMCR_ANENABLE);
/* First clear the PHY */
--
1.7.6
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