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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.
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1 changed files with 3 additions and 1 deletions
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@ -396,8 +396,10 @@ static void fec_pin_init(int fecidx)
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* * to 2.5 MHz.
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* * This MDC frequency is equal to system clock / (2 * MII_SPEED).
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* * Then MII_SPEED = system_clock / 2 * 2,5 Mhz.
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*
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* All MII configuration is done via FEC1 registers:
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*/
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fecp->fec_mii_speed = ((bd->bi_intfreq + 4999999) / 5000000) << 1;
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immr->im_cpm.cp_fec1.fec_mii_speed = ((bd->bi_intfreq + 4999999) / 5000000) << 1;
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#if defined(CONFIG_NETTA) || defined(CONFIG_NETPHONE) || defined(CONFIG_NETTA2)
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/* our PHYs are the limit at 2.5 MHz */
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