Bugfix in FEC initialisation:

All MII configuration is done via FEC1 registers. But MII_SPEED was
configured according to FEC used. So if only FEC2 was used, this caused
the real MII_SPEED register in FEC1 to stay uninitalised, what lead
to "mii_send STUCK!" messages. Fix: always configure MII_SPEED on FEC1
only.

diff --git a/cpu/mpc8xx/fec.c b/cpu/mpc8xx/fec.c
index 21c9070d21f9f13e25264f2752ecc0cab8c17c42..9ebee592d8cc72d18c5a5900fffd1b9e91125a7d 100644 (file)
--- a/cpu/mpc8xx/fec.c
+++ b/cpu/mpc8xx/fec.c
@@ -396,8 +396,10 @@ static void fec_pin_init(int fecidx)
         * * to 2.5 MHz.
         * * This MDC frequency is equal to system clock / (2 * MII_SPEED).
         * * Then MII_SPEED = system_clock / 2 * 2,5 Mhz.
+        *
+        * All MII configuration is done via FEC1 registers:
         */
-       fecp->fec_mii_speed = ((bd->bi_intfreq + 4999999) / 5000000) << 1;
+       immr->im_cpm.cp_fec1.fec_mii_speed = ((bd->bi_intfreq + 4999999) / 5000000) << 1;
 
 #if defined(CONFIG_NETTA) || defined(CONFIG_NETPHONE) || defined(CONFIG_NETTA2)
        /* our PHYs are the limit at 2.5 MHz */