MSDK-974 - Fixing CTB RevA Hash default value bug. #294
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On the ME21 the HASH_CTRL register was initializing to 0x0C. MXC_CTB_Done checks HASH_CTRL to determine if the hash feature is enabled and since the register is resetting to a non-zero value, a false positive is returned. Setting HASH_CTRL to 0 if it's not enabled in MXC_CTB_Init prevents the false positive.