BFE EngineeringandClaude Opus 4.8
168b51d47e
Verified: wifi, TRNG, OTP, GMAC, SARADC. Honest remaining value/effort: audio (next real capability), mailbox (small cleanup), crypto-v3 (defer — CPU crypto covers the need), NPU (no open userspace), pvtm (low). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_017wB8KB3MMQztRDXCMCkPrf
39 lines
2.7 KiB
Markdown
39 lines
2.7 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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## ⬜ Remaining — honest value/effort assessment
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| Block | value | effort | note |
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|---|---|---|---|
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| **audio codec + DSM** | MED (panel speaker) | med-high | next real capability — port rv1106_codec.c (2317L) + rk_dsm.c + simple-audio-card; ASoC 5.10→6.18 deltas. Card-registers verifiable now; audible test joins tomorrow's bench session |
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| **mailbox** (HPMCU) | MED | small | proper coproc mbox; the /dev/mem R5 path already works, so this is a cleanup not a gap |
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| **crypto-v3** (accel) | LOW-incremental | HIGH | ~100KB whole-subsystem replacement of mainline's rk3288 crypto + heavy crypto-API deltas. **CPU crypto extensions (AES/SHA, batch2 =y) already cover the functional need** — this is an offload optimization, not a capability gap. Defer to a dedicated session |
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| **NPU** (rknpu) | LOW (open) | med | kernel driver ports, but NO open userspace regcmd runtime exists — the driver would register with nothing able to submit jobs openly. Not worth shipping without an open encoder (`npu/PORT-PLAN.md`) |
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| **pvtm** | LOW | small | DVFS monitors; only if DVFS is pursued |
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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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