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bfe-core1106-sdk/kernel/rv1106-enablement/OVERNIGHT-RESULTS.md
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BFE EngineeringandClaude Fable 5 16368bb871 public-readiness: remove internal person-name attributions from docs
Decision/directive lines keep their dates and content, drop the name;
hands-on confirmations become "confirmed by hand at the panel"; a dangling
CLAUDE.md reference becomes "repo policy". Upstream vendor author
attributions in the GPL kernel sources (MODULE_AUTHOR, copyright headers,
LKML citations) are third-party legal attributions and stay.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018HUayid7W5w7jBdb9Rrj1K
2026-08-30 07:27:57 -06:00

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Overnight kernel-enablement run — results (2026-08-24 night → 08-25)

Goal: port/enable every remaining RV1106 hardware capability on the self-built Linux 6.18.46, open-source-first, verify on hardware, so the display's last mile can start in the morning. Runs on warden-c8a3 (_b slot = our 6.18).

Verified on hardware this run

Driver Evidence
AIC8800 wifi (M5) wlan0 up, iw scan found the site AP at 43 dBm + others. Modules (built-in deadlocks the two-stage SDIO bring-up).
TRNG /dev/hwrng, rng_current=rockchip-rng, real entropy.
OTP/nvmem rockchip-otp0 reads chip id ("MR1").
GMAC (wired eth) eth0: Link is Up - 100 Mbps/Full.
SARADC iio:device0 reads 2 channels (adc-keys).
Audio card rv1106-acodec, /dev/snd/pcmC0D0p+pcmC0D0c. Audible test → bench.

(These join the earlier-verified set: clk, pinctrl, GIC, timer, DMA, eMMC, uart×3, i2c, wdt, RTC, tsadc, RGA, USB host, PWM backlight. VOP display binds — connector is the morning task.)

Cross-cutting fixes made this run

  • XZ compression (CONFIG_KERNEL_XZ): the growing kernel overran U-Boot's DTB-at-0xc00000 load boundary (Sysmem Error, FLARE-AB fell to _a). zImage 12.1→8.3 MB, ~4 MB headroom. See kernel-618-btest-cycle memory + wifi doc.
  • Module vs built-in: wifi must be modules (SDIO two-stage bring-up races the mmc probe when built-in — sequential initcall deadlock). Audio/GMAC/etc. are built-in and fine.
  • Hardened the c8a3 _b-test → _a-recover cycle (compact-hex AVB serial write + readback while stable; Pi golden-env fallback for bootcount→loader).

Not done — deferred with reasons (see CAPABILITIES-AUDIT.md)

mailbox (binds via rk3368 fallback but no client to exercise), crypto-v3 (CPU crypto extensions already cover it; 100 KB port), NPU (no open userspace), pvtm (DVFS-only). Camera/ISP/SPI: no hardware. No unexplored capability gap.

Morning (needs a human at the bench)

  1. Display connector — VOP binds + DRM card0 + panel probes, but no connector link yet; needs eyes on the panel (pixels can't be verified over serial).
  2. Audible audiospeaker-test/aplay through the acodec.
  3. Wifi boot-time auto-load (modules currently insmod'd by hand) — a loader that inserts aic8800_bsp→fdrv(→btlpm) from the rootfs.

Provenance: every ported driver is GPL-2.0 kernel source (PROVENANCE.md).