TYAN S5652 - Page 144

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3.4.6.2 Hardware PM State Control
Hardware P-States
Disabled: Hardware choose a P-state based on OS Request (Legacy P-States)
Native Mode: Hardware choose a P-state based on OS guidance
Out of Band Mode: Hardware autonomously chooses a P-state (no OS guidance)
Disabled / Native Mode / Out of Band Mode / Native Mode with No Legacy
Support