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BFE EngineeringandClaude Opus 4.8 189f7aec38 sdk: bootstrap standalone repo (P0)

- Dual license (LICENSE / LICENSE-MIT / LICENSE-APACHE) matching the crate manifests.
- ADRs 0001-0005: kernel base (direct 5.10->6.18.46 forward-port), tiered MC/DC,
  standalone repo, CI runner (3rd repo-scoped runner on 0640), driver source-of-truth.
- README goal 1 reconciled to the verified 6.18.46 forward-port (was stale plan44/6.6).
- Drop tracked build objects (*.o now gitignored).
- Capture the display (VOP dclk-pol + WIN1) and GT911 touch bring-up VERIFIED docs
  + capabilities-audit update from this session.

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

2026-08-25 13:46:08 -06:00

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M4 — display (VOP) port to 6.18

The RV1106 VOP is the older RV-series "lite" VOP (rockchip,rv1106-vop, VOP_VERSION 2.0xc), driven by mainline's rockchip_drm_vop.c (VOP1), not VOP2. Its sibling rv1126 is already in mainline 6.18, so the register data is a small reuse — like the clk/pinctrl ports.

The driver delta (`rockchip_vop_reg.c`)

rv1106_vop_data.c.frag — add this vop_data (reuses rv1126's common/modeset/ output/misc/intr/win sub-structs; only the version, the smaller 1280² raster, and the VOP_FEATURE_INTERNAL_RGB feature differ), plus the match entry:

{ .compatible = "rockchip,rv1106-vop", .data = &rv1106_vop },

VOP_FEATURE_INTERNAL_RGB is essential — it is what makes vop_bind call rockchip_rgb_init() for the parallel-RGB output (rv1126 routes through MIPI and omits it).

The DT (in `../dts/rv1106-warden.dts`)

&vop enabled + named resets resets = <&cru SRST_H_VOP>, <&cru SRST_D_VOP>; reset-names = "ahb", "dclk"; — the mainline driver requires these (the vendor node omits them; without them: vop_bind: failed to get ahb reset).
&vop_out_rgb repointed straight to the panel (mainline has no separate rgb node — rockchip_rgb_init is a helper the VOP calls).
panel (panel-dpi, 720×720, 30 MHz) + pwm-backlight on &pwm1.

Verified on warden-c8a3 (2026-08-24)

CONFIG_DRM_ROCKCHIP=y + CONFIG_ROCKCHIP_VOP=y. On hardware:

rockchip-drm display-subsystem: bound ff990000.vop
[drm] Initialized rockchip 1.0.0 for display-subsystem on minor 0

/dev/dri/card0 is present and the PWM backlight is up (/sys/class/backlight, brightness settable). The VOP driver port is validated — the register data, version, feature, and resets are right.

✅ RESOLVED — full UI renders on the panel (2026-08-25)

The connector and the deeper black-screen chain that followed it are fixed; the 86-Panel now draws the full WardenOS Dashboard on 6.18 (_b), verified by webcam. The two final root causes were VOP driver bugs — rgb_dclk_pol hardcoded inverted, and the wrong primary scanout window (rv1106 scans out via WIN1, not WIN2). See VERIFIED.md for the complete bring-up chain, the _a-vs-_b register diff that pinned it down, and every file changed.

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