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Part Number: AM3352
My customers make their custom board with a combination of AM3352 and DP83822.They have been trying the Ethernet PHY loopback test and using ping command in u-boot as a test; however, the test failed (ping command is TIMEOUT).Could you tell me whether u-boot has a feature to achieve loopback test?Or, could you tell me another way to complete the loopback test in u-boot?
The followings are condition:-Processor SDK of Linux v04.00.00.04 is used as their system OS.-In case the ping command is sent from AM3352 to a competitor, the command succeed.-Only the case of the loopback test in Ethernet PHY fails.-They are referring snla266 to set the PHY into the loopback mode.-The u-boot commands are following.=> mii write 1 1f 8000=> mii read 1 1f0000=> mii write 1 0 6100=> mii read 1 06100=> mii write 1 1f 4000=> mii read 1 1f0000=> mii read 1 06100=> setenv ipaddr 192.168.101.1=> setenv netmask 255.255.255.0=> ping 192.168.101.1cpsw Waiting for PHY auto negotiation to complete......... TIMEOUT !Using cpsw device
ARP Retry count exceeded; starting again ping failed; host 192.168.101.1 is not alive
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