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Linux/DRA71XEVM: dra71x ddr stress test failed

user5067720
Prodigy 120 points
Part Number: DRA71XEVM

Tool/software: Linux

Hi TI,

Dra71x ddr3 stress test failed as below:

Executing DDR Stress Test ...
>> Enter memory address...example, 0x80000000
>> 0x80000000
>> Enter memory test size...example, 256MB = 0x10000000
>> 0x40000000
>> Testing 1 GB of DDR memory @ 0x80000000
>> Enter number of test iterations...
>> 1
>> Test Iteration 0:
>> Pattern - Addr as Data : PASS
>> Pattern - Random : PASS
>> Pattern - F's / 0's : FAIL - Failures found in at least 225760 32-bit address locations.
>> Pattern - A's / 5's : PASS

What does "Pattern - F's / 0's : FAIL - Failures found in at least 225760 32-bit address locations" means? The F's/0's is dependent on which ddr paramters?

  • 0
    TI__Mastermind 26595 points

    Hi,

    >>What does "Pattern - F's / 0's : FAIL - Failures found in at least 225760 32-bit address locations" means?

    This statement is informing the user that the test case found data mismatches when executing the F's / 0's pattern. However, it is difficult to state what the issue might be without additional data / debug. This test case should include an array called "errors" which logs the DDR address and value. We would be able to better assist if you could dump this data into a file and attach to the thread.

    >>The F's/0's is dependent on which ddr paramters?

    We would need to better understand the failure prior to being able to comment on whether it makes sense to modify DDR parameters.

    Can you please also let us know how many systems show this failure? Is this failure observed in all systems or just a few?

    Thanks!

    Best regards,
    Kevin

  • 0 in reply to Kevin S
    Prodigy 120 points
    Hi Kevin,

    Thanks for reply it.