Blanton_TTL_Script/docs/release-notes/v1.1.5.md

v1.1.5 — The stress jobs now last the whole soak

🐛 Bug fixes

USB stress ran for sixty seconds of an overnight soak

• qfx5252-stress-usb was started with --runtime 60. It finished a minute in and the USB path sat idle for the rest of the night. Nothing failed, nothing said so, and the run looked complete.
• SSD stress had the same shape at --runtime 3600 — one hour of a soak that usually runs far longer.
• Both are now --runtime 86400, and the BMC DDR memtester lost its loop count (64M 1 → 64M) so it runs until it is stopped rather than finishing one pass.
• 86400 is 24 hours, not "forever". A soak longer than a day leaves SSD and USB dead for the remainder. Script B prints bgctl list every round (since v1.0.10), so the shorter list is visible there — but nothing raises an alarm.

✨ New features

Multiphase VRM margin

• New blanton_multiphase_margin.sh drives the multiphase controllers on both switch boards over the native i2c buses — SWB0 on /dev/i2c-13 and -15, SWB1 on -14 and -16. 19 rails per board, 38 in all.

• high3 / low3 / comboA / comboB set the voltages and report one line per rail:

  SWB0_0V9_ANLG0 - 0.930V Configure Done
  SWB0_0V75_ANLG0 - 0.775V Configure Done
  ...
  [ OK ] high3: 38 rail(s) configured
  

• save commits them. It has no per-rail mapping, so it reports as one operation: Multiphase Save All.

• -u 0 / -u 1 for a single board; rails belonging to the other board are skipped and counted separately, not failed.

• save writes NVM permanently (PMBus STORE_USER_ALL, and 0x17 on the TH6 core rail). A power cycle does not undo it.

• These are not the LTC2980s that margin.sh drives. The two tools reach the same rails from different sides and each assumes it is the only writer. There is no interlock — do not run both.

Traffic bursts carry a random pattern

• blanton_traffic_linespeed v0.7.0 appends PatternRandom=yes to every tx, ce0 included. A fixed pattern can sit on a benign bit sequence for an entire run; a changing one is what makes a weak lane show itself.
• -r no forces the fixed pattern; -r "" leaves the argument off entirely, which is the pre-v0.7.0 wire format if a future SDK rejects it.
• Defaults change from tx 100 length=512 to tx 200 length=324.
• Counter totals are not comparable across this build: 64800 bytes per burst instead of 51200, about 27% more. The PASS/FAIL cross-check compares a pair against each other and is unaffected — only absolute figures moved.

📦 Downloads

File	Contents
Script_ABC_Blanton_V1.1.5.zip	The full Tera Term working directory, including Blanton_Script/ to copy onto the DUT

After copying to the DUT:

chmod +x ~/Blanton_Script/*.sh      # see below
grep -rlU $'\r' ~/Blanton_Script    # expect no output

blanton_ber.sh, nfc_polling.sh, blanton_tr518.sh, blanton_multiphase_margin.sh and the two TH6_SWB*_power_readback.sh are invoked through ./ or ~/, so they need the execute bit along with bmc_monitor.sh and usb_target.sh — neither git nor a Windows/USB copy carries it reliably.

⚠️ Before you run

• A soak longer than 24 hours needs the runtimes raised. --runtime 86400 is a ceiling; past it, SSD and USB are idle and only a shorter bgctl list hints at it.
• blanton_multiphase_margin.sh save is permanent. Read the rails back before committing, and never run it during a test.
• Do not mix blanton_multiphase_margin.sh and margin.sh — same rails, two different access paths, no interlock.
• Traffic counters changed scale. Any absolute thresholds taken from earlier logs need redoing.
• Script 4 (thermal/safety) has no teardown — finish with blanton_tr518.sh stop and kill $(jobs -p).
• These three cannot share the switch: blanton_ber.sh, blanton_tr518.sh, blanton_traffic_linespeed.
• Margin is only sampled at the start and end of a soak (since v1.1.4), not during it.
• FAN_SPEED is 100 — the fans run flat out unless you change config.ttl.
• The three items listed as unverified in v1.1.0 are still unverified: the ce0 ingress mirror, the 120s settle in blanton_tr518.sh, and test mode nr=no on stop.

🔗 Links

• Blanton_Test_Flow.drawio — the four scripts side by side
• ARCHITECTURE.md — test flow, data models, constraints
• CLAUDE.md — commands and the bench gotchas

Full changelog: V1.1.4...V1.1.5