marfrit
c9a3f5c600
Phase-1 audit closes with a substantively different picture than the original scaffold's TBDs: - Tomeu Vizoso's RK3588 NPU work merged in Linux 6.18 (Nov 2025) under codename `rocket` (NOT `rknpu`). All references updated. - Boltzmann's `linux-rk3588-marfrit-A1` (7.0.0-rc3-ARCH+) already ships `drivers/accel/rocket/rocket.ko` as a built-but-not-loaded module. - DT bindings + per-core nodes (`npu@fdab/c/d_0000`, compatible `rockchip,rk3588-rknn-core`) in mainline since 6.18 but ship `status = "disabled"` — board enable is the Phase-2 unblock, not a driver port. - Mesa 25.3 ships Rocket Gallium + Teflon TFLite delegate as the authoritative userspace reference for the uAPI shape. - Op coverage today is conv-centric (MobileNet-class); transformer matmul needs the conv-1×1 shoehorn (RKNPU2 BSP precedent) or rocket op-set additions. Surfaced as Phase-2-load-bearing risk. - IOMMU v1.0 hazard: 32 GB host needs `mem=4G` or local `rockchip,rk3568-iommu-v1` discriminator patches before the first NPU job, to avoid DMA-window faults. Files: - docs/npu-mainline-status.md: full audit table with upstream pointers (kernel.org / Mesa docs / dri-devel patch URLs / Tomeu's "we are in mainline" blog post). - docs/phases.md: per-phase log entry for Phase-1 closeout. - docs/op-coverage.md: matmul-vs-conv-vs-rocket-op-set framing. - fleet/boltzmann.yaml: audited kernel + npu_driver + dt_npu_nodes state. - kernel/dt-overlays/rk3588-rosenblatt-npu-enable.dtso: overlay to flip the three rknn-core nodes to "okay" (+ matching mmu nodes), carries the IOMMU-mitigation warning inline. - kernel/README.md: kernel-agent scope wiring + anticipated local carry patches. - README.md: phase-status table + "rknpu → rocket" rename note. - TODO.md: Phase-2 unblock concrete steps + standing upstream-watch items.
33 lines
1.2 KiB
Markdown
33 lines
1.2 KiB
Markdown
# kernel/
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Phase-1 audit closed the "do we need a driver?" question: Tomeu
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Vizoso's `rocket` driver is in mainline since Linux 6.18, and
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boltzmann's `linux-rk3588-marfrit-A1` build (7.0.0-rc3-ARCH+)
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already ships it as a module. See `docs/npu-mainline-status.md` for
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the full audit.
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Current contents:
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```
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kernel/
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└── dt-overlays/
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└── rk3588-rosenblatt-npu-enable.dtso
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# Flips rknn_core_0/1/2 + rknn_mmu_0/1/2 to status="okay".
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# Do NOT apply on >4 GB-RAM hosts without IOMMU v1.0
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# mitigation (mem=4G or local discriminator-compat patches).
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```
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Anticipated next additions:
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- `iommu/0001-iommu-rockchip-add-rk3568-iommu-v1-compatible.patch`
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— local carry of Midgy BALON's discriminator-compat patch when it
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appears upstream, plus the matching DT update for `rknn_mmu_*`.
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Drop when the upstream series lands.
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- Patches against marfrit's `linux-rk3588-marfrit-*` branch only if
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we need fixes beyond what mainline rocket provides. Kept minimal
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per the "mainline-clean from day 1" rule.
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Patch handling routes through the `kernel-agent` subagent (per
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`feedback_agent_routing.md`); board / host wiring lives in
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`fleet/boltzmann.yaml`.
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