Altera TCKs

Hi

I have a design with two altsyncram that are accessible via jtag.

Now I get tons of warnings like this one:

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Warning: Node: jtag.bp.CodeRam_ram_auto_generated_mgl_prim2_raw_tck was determined to be a clock but was found without an associated clock assignment.

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The normally seen altera_tck seems to be ok and recognised as clock - but what is this signal above? I don't manage to catch it with a clock statement.

Any idea?

Thanks and best regards,

emanuel