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Keep the boot loader DMA context for a running J613 MTP session. Admit only the T8122 MTP DART at 0x2fa808000, exactly stream 1, and verify that its control register still selects bypass before skipping reset. Select an identity domain and reject paging, blocked-domain attachment and runtime suspend while the inherited session runs. Retain the clock and bypass state at removal. This permits the existing mtp-live-v1 RTKit adoption path to keep serving input without another INIT. The C-diag11 implementation passed owner input testing on J613 with firmware 26.6.2. The rebased series requires a separate owner boot test. Signed-off-by: Satya Benson <satya@benson.earth>
The J613 and J615 25G83 device trees list the MTP as "apple,t8122-mtp", "apple,t8122-rtk-helper-asc4", "apple,mtp" without the generic "apple,rtk-helper-asc4" fallback, and say that Linux binds the SoC-specific compatible. The helper only matches the generic one, so on those boards it never probes, DockChannel HID defers forever and the built-in keyboard and trackpad stay absent. Match "apple,t8122-rtk-helper-asc4" as well. Signed-off-by: Satya Benson <satya@benson.earth>
…port-328-20261104
…port-328-20261104
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@DjDeveloperr @RyanTheTide ready for your regression testing. It hasn't been boot-tested on J613 with 7.3 yet; I'll post the result here when I have it. |
Conflict in drivers/iommu/apple-dart.c, apple_dart_probe(): integration added the v2.2 reg size check (d6b6f2e, #924) right after the stream count check, where this branch adds the J613 live MTP bypass check. Keep both. The size check comes first: it only needs num_streams and validates the MMIO region before the J613 check reads a stream control register. Both checks fail the probe, so the order only decides which error a bad node reports. The J613 MTP DART node has a 0x4000 reg. T8122 DARTs report a version below 2.2: the other T8122 DARTs have the same reg size and are reset on J613 by kernels whose reset path reads the v2.2 exception records at 0x8000, without faulting. The size check therefore does not refuse the J613 MTP DART.
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J613 boot result on 7.3 (rubra, M3 MacBook Air 13", macOS 26.6.2 / 25G83 firmware), 2026-11-05.
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Keep the exact J613 MTP bypass stream alive for live RTKit adoption, with identity-domain attachment and readback checks. Retain Aurora’s independent J614s/J713, radio and display policies. Requires the matching loader in aurora-silicon/u-boot#30.
Port of omacom/linux-aurora#328. The original PR remains untouched.
Validation: arm64 defconfig + asahi.config, Image/modules/DTBs with BTF and KUnit enabled, LLVM 18/Rust 1.85.0, passed at stack top #343 (
11d802aa9a17), which includes this branch. The validated integration base is b500668. QEMU loaded the test-bearing modules successfully with no additional failures. The combined run retains four pre-existing SEP store failures (plus their suite aggregate), reproduced on the unmodified Aurora base. The unmodified pinned base also crashes in apple-av-audio-lifetime/av_lifetime_devres_order; that unrelated audio suite is explicitly excluded. All tests added by these ports run through KUnit debugfs on Cortex-A76. This is not a fully green or complete-tree KUnit run. No new host fixture was authored for this layer; the arm64 module build and QEMU module-load smoke test passed. No 7.3 hardware boot or deployment has been performed.