Y2 CPU Final Fix03 physical qualification — prepared, not run
Historical exact-image receipt. This report retains its named Fix image and dated result. It does not describe Baseline02 or negate the newer bounded UART01 C1/C2/C3 passes. See Baseline02 and latest CPU-idle hardware proof.
Status: NOT_RUN. This page prepares the single owner-controlled acceptance run of the Fix03 candidate. Nothing here is a hardware result. Every row stays NOT_TESTED until a receipt from the installed Fix03 identity replaces it. The Fix02 report remains the authoritative physical baseline until then.
Owner action
- Verify
SHA256SUMSinout/y2linux-cpu-final-fix03-candidate/. - Install only BOOTIMG and ANDROID/Y2ROOT with
MT6582_preserve_data_scatter.txt, through the existing preserving workflow. - Start the temporary Wi-Fi observer over USB, as in Fix02. The session-local
wrapper is in
out/cpu-final-fix02-physical-qualification/20260929T152328Z/:export PATH=$PWD/$E/bin:$PATH,ssh y2 sh < $E/wifi-listener.sh. Then run:
python3 tools/development/qualify-cpu-fix03.py --run --host y2 --wifi-host y2-owner-wifi --allow-warm-rebootOwner inputs, all prompted: one USB unplug if charging is active (Wi-Fi then carries the run), one Power press for the Power-wake test, and the USB reconnect afterwards.
What the harness checks
Awake checks run first, each with its own receipt:
| Step | Pass criterion |
|---|---|
| Identity | Installed build/Reborn/kernel/rootfs match the package manifest |
| Regression gate | Timers, highres/NO_HZ, 1-ms sleeps, QoS with Back (158), MMC runtime gating with verified data, PWRAP 1196/1300 MHz at 1.20/1.25 V |
| Coordinator parking | 3→2→1 parking in a silent screen-off window. The display wake restores 0-3, with hold_ms=60000 and pressure_restores=0 afterwards |
| SLIDLE radios-off | Run as a detached device job: SLIDLE entries advance, slow_reject_bus stays 0, restore failures 0 |
| USB loaded stress | 10 × 1 MiB up/down SHA-256 roundtrips, observed over Wi-Fi. irq_max_burst, irq_max_jiffy and irq_progress are recorded |
| SRAM journal | Awake self-test, plus warm-reboot retention over whichever host answers |
Only if every awake check passes:
| Step | Pass criterion |
|---|---|
| Charger | Refusal only while charging is active, verified from failed_stage=DPM_PREPARED error=-16 |
| Staged PM | freezer/devices/platform/processors/core on the same boot, taint unchanged |
| Full RTC suspend | Same boot ID, RTC IRQ serviced, journal reaches EXIT |
| Power wake | One deliberate press on the same boot |
| Five RTC cycles | Each the same boot, then post-resume CPU/USB/MMC/Reborn/audio state |
If a backstop reset happens, the harness reads the previous boot's timed ring, names the last stage reached and the stalled call (for example DEVICES_RESUMED → console_resume_all), and records the decoded RGU cause (/sys/firmware/y2_pm/reset_status). That names the next single correction; it is not a pass.
Not changed and not claimed
C3 stays default off. The screen-off frequency ceiling and the BSP 110/120 °C trips are unchanged owner decisions. No electrical power measurement is part of this run.