From: Sven Peter <sven@svenpeter.dev>
To: Hector Martin <marcan@marcan.st>, Sven Peter <sven@svenpeter.dev>
Cc: Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Alyssa Rosenzweig <alyssa@rosenzweig.io>,
Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
linux-arm-kernel@lists.infradead.org, asahi@lists.linux.dev,
iommu@lists.linux.dev, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v4 0/3] Apple M1 USB4/Thunderbolt DART support
Date: Sun, 26 Nov 2023 16:16:58 +0100 [thread overview]
Message-ID: <20231126151701.16534-1-sven@svenpeter.dev> (raw)
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.
Changes since v3:
none
Changes since v2:
- drop the manual bypass disable
- added Rob's tag
Changes since v1:
- apple,t8103-usb4-dart instead of apple,t8103-dart-usb4 as the
compatible
- collected Hector's tags
Best,
Sven
Sven Peter (3):
dt-bindings: iommu: dart: Add t8103-usb4-dart compatible
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 | 35 +++++++++++++++++--
2 files changed, 34 insertions(+), 2 deletions(-)
--
2.34.1
next reply other threads:[~2023-11-26 15:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-26 15:16 Sven Peter [this message]
2023-11-26 15:16 ` [PATCH v4 1/3] dt-bindings: iommu: dart: Add t8103-usb4-dart compatible Sven Peter
2023-11-26 15:17 ` [PATCH v4 2/3] iommu: dart: Write to all DART_T8020_STREAM_SELECT Sven Peter
2023-11-26 15:17 ` [PATCH v4 3/3] iommu: dart: Add support for t8103 USB4 DART Sven Peter
2023-11-26 17:32 ` [PATCH v4 0/3] Apple M1 USB4/Thunderbolt DART support Neal Gompa
2023-11-27 10:15 ` Joerg Roedel
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