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kernel: M4 VOP display driver ported to 6.18 — binds on hardware (connector WIP)

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The RV1106 VOP is the RV-series "lite" VOP (rockchip,rv1106-vop, VOP_VERSION 2.0xc),
mainline's VOP1 driver. Its sibling rv1126 is already in 6.18, so rv1106_vop reuses
rv1126's register sub-structs + VOP_FEATURE_INTERNAL_RGB + the smaller raster.

Verified on warden-c8a3: with the driver delta + DT (vop enabled with named
"ahb"/"dclk" resets, vop_out repointed to a panel-dpi 720x720 node, pwm-backlight
on pwm1), the VOP BINDS and DRM initialises (/dev/dri/card0), and the PWM backlight
comes up. The register data / version / feature / resets are validated.

Open: /sys/class/drm/card0 has no connector yet — rockchip_rgb_init isn't producing
one ("Cannot find any crtc"). Last mile of M4; needs a debug print in rgb_init + the
panel bus_format, and the pixels must be verified on the physical panel (can't be
checked over serial/ssh). Full recipe + next steps in display/README.md.

Also batch-2 config: GPIO_SYSFS, PWM_ROCKCHIP, crypto (aes/ccm/ctr/arc4), CFG80211,
DRM_ROCKCHIP/ROCKCHIP_VOP all =y; PSCI-style SMC removed via the psci-node deletion.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017wB8KB3MMQztRDXCMCkPrf
This commit is contained in:
BFE Engineering
2026-08-24 22:02:55 -06:00
co-authored by Claude Opus 4.8
parent 79ef2df67a
commit 5abf1c4468
4 changed files with 142 additions and 3 deletions
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kernel/rv1106-enablement/DRIVER-PARITY.md
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@@ -28,9 +28,11 @@ c8a3, not just compiled.
| USB host (xhci, usb1) | xhci-hcd:usb1 | mainline | ⬜ M6 |
| crypto (aes/ccm/ctr/arc4) | modules | mainline | ⬜ batch2 (config =y) |
| PSCI node (removed) | — | — | ✅ deleted (no secure monitor → SMC fault) |
| VOP display (ff990000) | ff990000.vop | rockchip DRM | ⬜ M4 |
| RGB666 720×720 panel + backlight | — | panel-simple/rockchip | ⬜ M4 |
| GT911 touch (goodix) | goodix, gt911 | mainline | ⬜ M4 |
| VOP display (ff990000) | ff990000.vop | ported (rv1126 sibling) | 🔨 binds+DRM+card0; connector WIP |
| PWM backlight (pwm1) | — | mainline (rk3328 fallback) | ✅ backlight up (brightness) |
| RGB666 720×720 panel | — | panel-dpi | 🔨 probes; bus_format + connector WIP |
| GT911 touch (goodix) | goodix, gt911 | mainline | ⬜ M4 (needs GPIO_SYSFS ✅ + node) |
| GPIO_SYSFS / crypto / CFG80211 | — | mainline (config) | ✅ =y (batch2) |
| AIC8800 wifi (bsp/fdrv) | aic8800_* | **out-of-tree** | ⬜ M5 |
| AIC8800 BT (btlpm) | aic8800_btlpm | **out-of-tree** | ⬜ M5 |
| NPU (rknpu, ff660000) | rknpu, ff660000.npu | **out-of-tree** | ⬜ M6 |