t8122 dts tweaks#2
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The internal keyboard and trackpad HID on MacBook variants of the Apple M3 (t8122) SoC are connected through a Apple -developed protocol called DockChannel and mediated by a coprocessor known as the Multi-Touch Processor (MTP). This commit adds the nessecary device tree nodes to the M3's device tree for internal HID to work. It is disabled by default, to be enabled only in MackBook board files where it is tested and confirmed to work. Signed-off-by: Michael Reeves <michael.reeves077@gmail.com>
On Apple Silicon, NVMe communication is mediated by a coprocessor known as the ANS, and protected by its own IOMMU known as the SART. Add the following nodes to the M3 (t8122) device tree: - Mailbox for the ANS coprocessor - SART (IOMMU for the ANS coprocessor) - The NVMe / ANS coprocessor itself Signed-off-by: Michael Reeves <michael.reeves077@gmail.com>
Add a device tree for the Apple MacBook Air (13-inch, M3, 2024) board variant of the M3 (t8122), known as J613. It enables and configures the keyboard backlight and internal HID nodes, as it is a laptop variant which has these devices. Also add this new device tree to the Makefile, so it is built. Signed-off-by: Michael Reeves <michael.reeves077@gmail.com>
Signed-off-by: Alyssa Milburn <amilburn@zall.org>
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This only includes the first port, because it's the only port that is present on my hardware, and only includes the pwren gpio for J613. Signed-off-by: Alyssa Milburn <amilburn@zall.org>
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Pushed the basics for pcie too, although perhaps that should be a separate PR. It is compatible with apple,t6020-pcie (I didn't add it to the compatible list but maybe we should). To get wifi/etc you also need to copy-and-paste the relevant other bits into the J613 dts. |
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Thanks! I applied the fix and added you as Co-developed-by for the MTP commit. I also added the commit for PCIe (which, in my tests, on its own was sufficient for WiFI to work, without the other parts), however changed the |
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The sub-nodes, and also the aliases so m1n1 can populate fields. Signed-off-by: Alyssa Milburn <amilburn@zall.org>
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will push deltas on top of your draft t8122 dts to this branch