BFE EngineeringandClaude Opus 4.8
13ab5c7303
The brief: port/enable every remaining RV1106 hardware capability on 6.18, open-source-first (source we own + can harden, never blobs), new drivers if needed, zero capabilities left on the table. Priority: AIC8800 wifi/BT, RGA, rknpu, RTC, tsadc, i2s, saradc-fix, eth0-gadget, then a full capabilities audit. Display deferred to tomorrow (needs eyes on the panel). Pipelined: research subagents ∥ port/build/verify on c8a3; krecover-hardened for resilience. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_017wB8KB3MMQztRDXCMCkPrf
3.2 KiB
Overnight autonomous kernel-completion workflow
Directive ([maintainer], 2026-08-24 night): port/enable every remaining RV1106 hardware capability on the self-built 6.18 kernel, open-source-first — we want source we can read, harden, and bend to our needs (vendor SDK source, upstream, community repos, or reverse-engineering), never binary blobs. Not just ports — new drivers if necessary. Leave zero hardware capability or customization on the table. Fully autonomous, runs overnight; the display's last mile is deferred to tomorrow morning (needs eyes on the panel).
Open-source sourcing policy (in order of preference)
- Vendor SDK source —
flare-edge/sdk/sysdrv/source/kernel/drivers/…. Every driver below ships as C source there (aic8800, rknpu, rga, rtc, tsadc, i2s all have source — the only closed pieces are userspace runtimes like RKNN, not the kernel drivers). Port 5.10 → 6.18. - Mainline / sibling — reuse rv1126/px30 data where the IP matches (clk, pinctrl, vop, saradc, usb2phy all used this).
- Community open drivers — deep web research (AICSemi upstream/github, the NPU reverse-engineering efforts, etc.) for a cleaner or better-understood base.
- Reverse-engineering — register maps from the TRM + the vendor source, as a last resort or to harden. For each: understand it, prefer the most upstream-aligned source, harden it, and add a regression check where feasible.
Targets (priority order)
| # | Driver | Source | Verify (self, no visual) |
|---|---|---|---|
| 1 | AIC8800 wifi + BT (SDIO full-MAC) | SDK aic8800_{bsp,fdrv,btlpm} + AICSemi github | wlan0 up, scan, connect |
| 2 | RGA 2D (multicore rga2) | SDK + mainline rockchip/rga | /dev/rga, blit test |
| 3 | rknpu NPU (kernel driver) | SDK rknpu + RE efforts | /dev/rknpu, submit a job |
| 4 | RTC (rv1106-rtc) | SDK drivers/rtc | /dev/rtc0, hwclock |
| 5 | tsadc thermal | SDK data port | thermal_zone0/temp |
| 6 | i2s-tdm audio | rv1126 fallback + config | sound card / aplay |
| 7 | saradc -22 fix | clk-rate debug | IIO device reads |
| 8 | eth0 USB gadget | dr_mode + configfs | eth0 to xps |
| 9 | Capabilities audit | TRM + SDK sweep | enable/port everything else |
Capabilities audit (#9) — nothing left on the table
Enumerate every RV1106 block and confirm a 6.18 driver: crypto accelerator + TRNG, mailbox/HPMCU integration, DSMC/flexbus, SFC/SPI-NOR, remaining SPI, CAN, PWM (fan/other), DMA2, DDR monitor, the second/other UARTs, GMAC (if wired), pvtm, otp/nvmem, dsmc. Anything with hardware present and no driver → port or write it.
Execution model
Pipeline: research (Sonnet subagents, in background) ∥ port (me) → build → flash to c8a3 slot _b → verify on hardware → commit to warden-sdk. Serial bottleneck is c8a3; research/porting overlaps verification. Resilience: krecover is hardened (serial-primary + Pi/rkdeveloptool bootcount-reset fallback); on a port that won't land, capture the state, mark it in DRIVER-PARITY.md, and move on — never leave c8a3 stuck, never block the whole run on one driver. Commit after every landed driver so progress is durable.