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Arm Hierarchical Resource Management System Architecture Specification

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Arm® Hierarchical Resource Management System Architecture Specification

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Multiple SCP fast loops within a SCP slow loop

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Subsystem LCP supported HRM functionality

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LCP control flow with fallback functions

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Internal subsystem voltage change request (VID_REQ)

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SoC/Subsystem voltage acknowledge or status (VID_ACK or VID_STAT)

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Internal Subsystem Voltage Acknowledge or Status (VID_ACK or VID_STAT)

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Tradeoffs between Proactive and reactive mechanisms

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Package maximum current or average power

# metadata.contentDescription
This document is meant to give an end-to-end picture of HRM operation. HRM leverages many of the existing technologies, including the PPU, P or Q channel, LCP or SCP.