Low Power / UPF · All levels

Power / PD Handoff: Reports & Metrics

Reports & Metrics for Power / PD Handoff.

Reports and metrics

Reports & Metrics for Power / PD Handoff focuses on handoff defect rate, ECO churn after handoff, and ownership clarity score. The goal is to link observed behavior to power-intent mechanism, ownership, and release risk.

Reports must translate handoff defect rate, ECO churn after handoff, and ownership clarity score into release decisions. Totals are insufficient; you need transition context, ownership status, and closure trend.

Transition waveform lens

diagram

MODE TRANSITION WAVEFORM — Power / PD Handoff

time ---> 
save_req      ___/---------\____________________
iso_en        ________/----------------\________
switch_en     _____________/--------\___________
domain_vdd    -----------\____OFF____/----------
restore_req   ____________________/---\_________

Ordering errors are the most common LP escapes.

Metric trend

diagram

BEFORE / AFTER FIX — Power / PD Handoff

metric quality
  ^
  |                       o target region
  |                 o post-fix + regression
  |            o
  |      o failing baseline
  +----------------------------------------> iteration
      sequence audit   policy fix   full re-run

Track handoff defect rate, ECO churn after handoff, and ownership clarity score per transition, domain, and subsystem.
Report policy binding status with each metric movement.
Track open waivers with age and owner to avoid silent risk drift.
Store metric snapshots next to reproducible revision tags.

Low-power deep dive

Mode transition IR and ownership clarity determine tapeout confidence.

Concept diagram

diagram

GRID + TRANSITIONS

domain partition -> staged wake -> transient IR -> signoff gate

Metric graph

diagram

TRANSIENT DROOP TREND

baseline       ███████
after staging  ████
after tuning   ██

Reports and artifacts

domain grid report
dynamic IR analysis
LP signoff dashboard
handoff owner matrix

Mini case study

Dynamic IR during wake-up, not static IR, was the true blocker for release.

Debug branches

Inspect transition waveforms
Check PMU schedule alignment
Escalate aged waivers

Senior review question

Ask: what transition evidence proves this topic is closed, and which owner signs it?

Key takeaways

State transition context must accompany every low-power metric claim.
Intent changes require simulation, formal, and implementation re-validation.

Common pitfalls

Comparing results from mismatched UPF revisions.
Assuming static checks replace transition validation.
Shipping with aged waivers and unclear ownership.

Execution drill pack 1

Use this pack to rehearse low-power closure on low-power/pd-power-integration/power-pd-handoff/reports: transition framing, policy ownership, implementation evidence, and release confidence.

Transition checklist

State transition explicitly named with legal source/target states.
Crossing and domain ownership are mapped and agreed.
Policy controls are traced to always-on source logic.
Waveform bookmarks align controls with state timestamps.

Review prompts

Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?

Evidence capsule

diagram

LP EVIDENCE CAPSULE 1

PATH: low-power/pd-power-integration/power-pd-handoff/reports
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>

Execution drill pack 2

Use this pack to rehearse low-power closure on low-power/pd-power-integration/power-pd-handoff/reports: transition framing, policy ownership, implementation evidence, and release confidence.

Transition checklist

State transition explicitly named with legal source/target states.
Crossing and domain ownership are mapped and agreed.
Policy controls are traced to always-on source logic.
Waveform bookmarks align controls with state timestamps.

Review prompts

Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?

Evidence capsule

diagram

LP EVIDENCE CAPSULE 2

PATH: low-power/pd-power-integration/power-pd-handoff/reports
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>

Execution drill pack 3

Use this pack to rehearse low-power closure on low-power/pd-power-integration/power-pd-handoff/reports: transition framing, policy ownership, implementation evidence, and release confidence.

Transition checklist

State transition explicitly named with legal source/target states.
Crossing and domain ownership are mapped and agreed.
Policy controls are traced to always-on source logic.
Waveform bookmarks align controls with state timestamps.

Review prompts

Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?

Evidence capsule

diagram

LP EVIDENCE CAPSULE 3

PATH: low-power/pd-power-integration/power-pd-handoff/reports
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>

Execution drill pack 4

Use this pack to rehearse low-power closure on low-power/pd-power-integration/power-pd-handoff/reports: transition framing, policy ownership, implementation evidence, and release confidence.

Transition checklist

State transition explicitly named with legal source/target states.
Crossing and domain ownership are mapped and agreed.
Policy controls are traced to always-on source logic.
Waveform bookmarks align controls with state timestamps.

Review prompts

Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?

Evidence capsule

diagram

LP EVIDENCE CAPSULE 4

PATH: low-power/pd-power-integration/power-pd-handoff/reports
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>

Execution drill pack 5

Use this pack to rehearse low-power closure on low-power/pd-power-integration/power-pd-handoff/reports: transition framing, policy ownership, implementation evidence, and release confidence.

Transition checklist

State transition explicitly named with legal source/target states.
Crossing and domain ownership are mapped and agreed.
Policy controls are traced to always-on source logic.
Waveform bookmarks align controls with state timestamps.

Review prompts

Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?

Evidence capsule

diagram

LP EVIDENCE CAPSULE 5

PATH: low-power/pd-power-integration/power-pd-handoff/reports
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>

Execution drill pack 6

Use this pack to rehearse low-power closure on low-power/pd-power-integration/power-pd-handoff/reports: transition framing, policy ownership, implementation evidence, and release confidence.

Transition checklist

State transition explicitly named with legal source/target states.
Crossing and domain ownership are mapped and agreed.
Policy controls are traced to always-on source logic.
Waveform bookmarks align controls with state timestamps.

Review prompts

Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?

Evidence capsule

diagram

LP EVIDENCE CAPSULE 6

PATH: low-power/pd-power-integration/power-pd-handoff/reports
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>

Execution drill pack 7

Use this pack to rehearse low-power closure on low-power/pd-power-integration/power-pd-handoff/reports: transition framing, policy ownership, implementation evidence, and release confidence.

Transition checklist

State transition explicitly named with legal source/target states.
Crossing and domain ownership are mapped and agreed.
Policy controls are traced to always-on source logic.
Waveform bookmarks align controls with state timestamps.

Review prompts

Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?

Evidence capsule

diagram

LP EVIDENCE CAPSULE 7

PATH: low-power/pd-power-integration/power-pd-handoff/reports
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>

Execution drill pack 8

Use this pack to rehearse low-power closure on low-power/pd-power-integration/power-pd-handoff/reports: transition framing, policy ownership, implementation evidence, and release confidence.

Transition checklist

State transition explicitly named with legal source/target states.
Crossing and domain ownership are mapped and agreed.
Policy controls are traced to always-on source logic.
Waveform bookmarks align controls with state timestamps.

Review prompts

Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?

Evidence capsule

diagram

LP EVIDENCE CAPSULE 8

PATH: low-power/pd-power-integration/power-pd-handoff/reports
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>

Execution drill pack 9

Use this pack to rehearse low-power closure on low-power/pd-power-integration/power-pd-handoff/reports: transition framing, policy ownership, implementation evidence, and release confidence.

Transition checklist

State transition explicitly named with legal source/target states.
Crossing and domain ownership are mapped and agreed.
Policy controls are traced to always-on source logic.
Waveform bookmarks align controls with state timestamps.

Review prompts

Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?

Evidence capsule

diagram

LP EVIDENCE CAPSULE 9

PATH: low-power/pd-power-integration/power-pd-handoff/reports
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>

Execution drill pack 10

Use this pack to rehearse low-power closure on low-power/pd-power-integration/power-pd-handoff/reports: transition framing, policy ownership, implementation evidence, and release confidence.

Transition checklist

State transition explicitly named with legal source/target states.
Crossing and domain ownership are mapped and agreed.
Policy controls are traced to always-on source logic.
Waveform bookmarks align controls with state timestamps.

Review prompts

Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?

Evidence capsule

diagram

LP EVIDENCE CAPSULE 10

PATH: low-power/pd-power-integration/power-pd-handoff/reports
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>

Execution drill pack 11

Use this pack to rehearse low-power closure on low-power/pd-power-integration/power-pd-handoff/reports: transition framing, policy ownership, implementation evidence, and release confidence.

Transition checklist

State transition explicitly named with legal source/target states.
Crossing and domain ownership are mapped and agreed.
Policy controls are traced to always-on source logic.
Waveform bookmarks align controls with state timestamps.

Review prompts

Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?

Evidence capsule

diagram

LP EVIDENCE CAPSULE 11

PATH: low-power/pd-power-integration/power-pd-handoff/reports
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>

Execution drill pack 12

Use this pack to rehearse low-power closure on low-power/pd-power-integration/power-pd-handoff/reports: transition framing, policy ownership, implementation evidence, and release confidence.

Transition checklist

State transition explicitly named with legal source/target states.
Crossing and domain ownership are mapped and agreed.
Policy controls are traced to always-on source logic.
Waveform bookmarks align controls with state timestamps.

Review prompts

Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?

Evidence capsule

diagram

LP EVIDENCE CAPSULE 12

PATH: low-power/pd-power-integration/power-pd-handoff/reports
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>

Execution drill pack 13

Use this pack to rehearse low-power closure on low-power/pd-power-integration/power-pd-handoff/reports: transition framing, policy ownership, implementation evidence, and release confidence.

Transition checklist

State transition explicitly named with legal source/target states.
Crossing and domain ownership are mapped and agreed.
Policy controls are traced to always-on source logic.
Waveform bookmarks align controls with state timestamps.

Review prompts

Which policy object is first to deviate from intent?
Which owner can apply the smallest reversible fix?
What regression matrix proves no collateral damage?
Which waiver conditions would still block release?

Evidence capsule

diagram

LP EVIDENCE CAPSULE 13

PATH: low-power/pd-power-integration/power-pd-handoff/reports
STATE WINDOW: <from -> to>
POLICY OBJECT: <isolation / retention / shifter / switch>
OWNER: <name>
PRIMARY ARTIFACT: <report/waveform/formal result>
RELEASE DECISION: <close / bounded waiver / escalate>

Report interpretation

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