Feedback-ID: i51094778:Fastmail
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>,
        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 v3 0/3] Apple M1 USB4/Thunderbolt DART support
Date:   Sat, 11 Mar 2023 14:38:53 +0100
Message-Id: <20230311133856.63840-1-sven@svenpeter.dev>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

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 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(-)

-- 
2.25.1