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BFE EngineeringandClaude Opus 4.8 aa25577095 kernel/rv1106: overnight run results + final capabilities ledger

Six drivers verified on hardware this run (wifi, TRNG, OTP, GMAC, SARADC,
audio). Final honest ledger: mailbox (fallback-binds, no client), crypto-v3
(CPU crypto covers), NPU (no open userspace), pvtm (DVFS-only) all deferred
with reasons — no unexplored capability gap. Morning bench tasks documented
(display connector, audible audio, wifi boot-time auto-load).

OVERNIGHT-RESULTS.md added.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017wB8KB3MMQztRDXCMCkPrf

2026-08-25 01:24:40 -06:00

2.4 KiB

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

Goal ([maintainer]): 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 ([device-mac]), `iw scan` found the site AP −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 [maintainer] at the bench)

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).
Audible audio — speaker-test/aplay through the acodec.
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).

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