>From fb6180be91b99021bc3443f79ca2bb0e1accb80b Mon Sep 17 00:00:00 2001
From: Jiri Gaisler <[email protected]>
Date: Sun, 16 Jun 2013 15:40:03 +0200
Subject: [PATCH 2/2] greth: do not advertise 1000M capability if MAC does not
support it.
---
c/src/libchip/network/greth.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/c/src/libchip/network/greth.c b/c/src/libchip/network/greth.c
index 2663e8d..cab41b8 100644
--- a/c/src/libchip/network/greth.c
+++ b/c/src/libchip/network/greth.c
@@ -306,6 +306,17 @@ greth_initialize_hardware (struct greth_softc *sc)
write_mii(phyaddr, 0, 0x8000 | phyctrl);
while ((read_mii(phyaddr, 0)) & 0x8000) {}
+ phystatus = read_mii(phyaddr, 1);
+
+ /* Disable Gbit auto-neg advertisement if MAC does not support it */
+
+ if ((!sc->gbit_mac) && (phystatus & 0x100)) write_mii(phyaddr, 9, 0);
+
+ /* Restart auto-negotiation if available */
+ if (phystatus & 0x08) {
+ write_mii(phyaddr, 0, phyctrl | 0x1200);
+ phyctrl = read_mii(phyaddr, 0);
+ }
/* Check if PHY is autoneg capable and then determine operating mode,
otherwise force it to 10 Mbit halfduplex */
--
1.7.9.5
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