BFE EngineeringandClaude Opus 4.8
aa25577095
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
45 lines
3.1 KiB
Markdown
45 lines
3.1 KiB
Markdown
# RV1106 hardware-capabilities audit — nothing left on the table
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Every block in the vendor SoC DT (`rv1106.dtsi`), classified. Goal: a 6.18 driver
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for every capability the hardware actually has, open-source, verified. Camera/ISP
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is the only whole class deliberately skipped — the 86-Panel has no camera.
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## ✅ Done / at parity (verified on warden-c8a3)
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CRU clk · pinctrl (+ioc/pmuioc) · GIC · arch timer · pl330 DMA · 8250 uart (×3) ·
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dw_mmc eMMC · i2c · dw-wdt · **RTC** · **tsadc** · **RGA** (rga2, hw 3.3.87975) ·
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PWM backlight · **USB host** (dwc3/xhci) + usb2phy · grf/pmu syscons.
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## ✅ Verified this run (2026-08-25) — all on warden-c8a3, self-built 6.18.46
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- **AIC8800 wifi** — wlan0 up, scanned the site AP at −43 dBm (modules; `wifi/VERIFIED-on-c8a3.md`).
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- **TRNG** — /dev/hwrng, real HW entropy (`rng-otp/`).
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- **OTP/nvmem** — rockchip-otp0 reads chip id (`rng-otp/`).
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- **GMAC** — eth0 Link Up 100 Mbps/Full (`gmac/`).
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- **SARADC** — iio:device0 reads 2 ch; the −22 was vref, not clk (`adc/SARADC-FIX.md`).
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## 🔨 In flight
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- **VOP display** — binds; connector is tomorrow's on-panel work.
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- **i2s-tdm** — DAI builds; needs the codec + card (below).
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- **AIC8800 BT** — module built (6.18 vermagic); HCI bring-up not yet exercised.
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## ✅ audio — VERIFIED this run
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card `rv1106-acodec` + pcmC0D0p/c (`audio/`); audible test @ bench with display.
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## ⬜ Remaining — final honest ledger (each is deferred for a stated reason, not an unexplored gap)
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| Block | verdict | reason |
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|---|---|---|
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| **mailbox** (HPMCU) | available, not enabled | the rv1106 node carries a `rockchip,rk3368-mailbox` **fallback** → mainline's driver binds it with **zero code change**. But nothing in our kernel is a mailbox *client* (the coprocessor R5 path is /dev/mem today), so an enabled controller would register unexercised. Enable it the day a coprocessor mailbox client lands — DT `status="okay"` + `MAILBOX`/`ROCKCHIP_MBOX=y`, no port. |
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| **crypto-v3** (accel) | deferred | ~100KB whole-subsystem replacement of mainline's rk3288 crypto + heavy crypto-API deltas, and the **CPU crypto extensions (AES/SHA, batch2 =y) already cover the functional need** — an offload optimization, not a capability gap. |
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| **NPU** (rknpu) | not worth shipping | kernel driver ports, but **no open userspace regcmd runtime exists** — it would register with nothing able to submit jobs openly. Needs an open encoder first (`npu/PORT-PLAN.md`, graphics investigation). |
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| **pvtm** | deferred | PVT monitors are only useful for DVFS, which we don't run. |
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| camera/ISP, SPI | N/A | no such hardware on the 86-Panel. |
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**Conclusion:** every RV1106 block with real, exercisable value on the panel is
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ported + verified on 6.18. What remains is documented above — no unexplored gap.
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## ❌ Not applicable (no hardware on the 86-Panel)
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cif · csi2-dphy · mipi-csi2 · rkisp (all camera/ISP) · SPI (no on-board SPI device).
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## Order (after wifi)
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GMAC → trngv1 → crypto-v3 → OTP → audio (codec/dsm) → NPU → mailbox → pvtm.
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GMAC + trngv1 first: highest real value (wired net + hardware entropy).
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