[PATCH 0/4] Apple M1 USB4/Thunderbolt DART support

Sven Peter
2023-01-28T11:11:35Z

Hi,

The M1 SoCs have a second slightly different variant of the regular
DART used for the USB4 PCIe ports. It supports 64 instead of 16 streams
which requires a minor change to the MMIO layout.
There seems to be no way to tell them apart from the regular DARTs by
just looking at the DART_PARAMs register so we have to add a new
compatible for those.

Best,

Sven

Sven Peter (4):
dt-bindings: iommu: dart: Add t8103-usb4-dart compatible
iommu: dart: Add flag to override bypass support
iommu: dart: Write to all DART_T8020_STREAM_SELECT
iommu: dart: Add support for t8103 USB4 DART

.../devicetree/bindings/iommu/apple,dart.yaml | 1 +
drivers/iommu/apple-dart.c | 42 ++++++++++++++++++-
2 files changed, 41 insertions(+), 2 deletions(-)

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