https://docs.amd.com/r/en-US/pg046-aurora-8b10b/GT-Refclk1-and-GT-RefclK2
GT Refclk1 and GT RefclK2 - GT Refclk1 and GT RefclK2 - 11.1 English - PG046
Select reference clock sources for the GTP, GTX, or GTH Quad from the drop-down list in this section. Default: GT REFCLK Source 1: GTPQn /GTXQn /GTHQn ; GT...
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