s3c2440
芯片在裸机程序和uboot中驱动dm9000aep正常（必须在片选加点容），调试linux内核时，不停的
eth0: link down
eth0: link up, 100Mbps, full-duplex, lpa 0x41E1
eth0: link down
eth0: link up, 100Mbps, full-duplex, lpa 0x41E1
eth0: link down
eth0: link up, 100Mbps, full-duplex, lpa 0x41E1
eth0: link down
eth0: link up, 100Mbps, full-duplex, lpa 0x41E1
dm9000 dm9000.0: status check fail: 6
eth0: link down
还有status check fail，这是怎么回事呀？
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