[PATCH 0/4] Apple M1 USB4/Thunderbolt DART support
Sven Peter
sven at svenpeter.dev
Sat Jan 28 03:11:10 PST 2023
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(-)
--
2.25.1
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