Refer to ERR004364 in IMX6DQCE(Rev.6).
The impact is RAWNAND and APBHDMA clocks might be gated unintentionally.
And, "Functionality or mode of operation in which the erratum may manifest itself is not used".
Now, my customer is using only uSDHC3, but not using GPMI.
Is it possible to ignore this errata on customer's system?