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M2 Series Feature Support

ETCHDEV edited this page Dec 22, 2023 · 17 revisions

This page details currently supported features on all M2 series (M2, M2 Pro, M2 Max, M2 Ultra) Apple Silicon Macs, as well as their progress towards being upstreamed. The tables herein can be interpreted as follows:

  • Kernel release, e.g. 6.0: the feature was incorporated upstream as of this release
  • linux-asahi (kernel release): the feature is stable, available for use in Fedora Asahi Remix, and should be upstream by the release indicated
  • linux-asahi: the feature is (mostly) stable and available for use in Fedora Asahi Remix
  • WIP: Development work on the feature is actively progressing, however is not yet ready for wider testing, use or distribution
  • TBA: Active work on this feature is not being undertaken at this time
  • -: Feature not supported by hardware on this platform

If a feature is not ready, then there is no estimation on when it will be ready. Please do not ask for estimations in support channels (e.g. IRC).

Table of Contents

SoC blocks

These are features/hardware blocks that are present on all devices with the given SoC.

M2
(T8112)
M2 Pro/Max/Ultra
(T602x)
DCP linux-asahi linux-asahi
USB2 (TB ports) linux-asahi linux-asahi
USB3 (TB ports) linux-asahi linux-asahi
Thunderbolt TBA TBA
DP Alt Mode WIP WIP
GPU linux-asahi linux-asahi
Video Decoder WIP WIP
NVMe 5.19 5.19
PCIe 5.16 / 6.4 (dts) linux-asahi
PCIe (GE) - TBA
cpufreq 6.2 6.2
cpuidle linux-asahi (notes) linux-asahi (notes)
Suspend/sleep linux-asahi linux-asahi
Video Encoder WIP WIP
ProRes Codec TBA TBA
AICv2 5.18 5.18
DART 6.3 linux-asahi
PMU 6.4 6.4
UART 5.13 5.13
Watchdog 5.17 5.17
I2C 5.16 5.16
GPIO 5.16 5.16
USB-PD 5.16 5.16
MCA 6.1 / 6.4 (dts) linux-asahi
SPI linux-asahi linux-asahi
SPI NOR linux-asahi linux-asahi
SMC linux-asahi linux-asahi
SPMI linux-asahi linux-asahi
RTC linux-asahi linux-asahi
SEP WIP WIP
Neural Engine out of tree (notes) out of tree (notes)

M2 devices

MacBook Air
(13-inch, 2022)
MacBook Air
(15-inch, 2023)
MacBook Pro
(13-inch, 2022)
Mac Mini
(2023)
Installer yes yes yes yes
Devicetree 6.4 linux-asahi 6.4 6.4
Main display linux-asahi linux-asahi linux-asahi -
Keyboard linux-asahi linux-asahi linux-asahi -
KB backlight 6.4 6.4 6.4 -
Touchpad linux-asahi linux-asahi linux-asahi -
Brightness linux-asahi linux-asahi linux-asahi -
Battery info linux-asahi linux-asahi linux-asahi -
WiFi 6.1 6.1 6.1 linux-asahi
Bluetooth 6.2 6.2 6.2 linux-asahi
HDMI Out - - - linux-asahi
3.5mm jack linux-asahi linux-asahi linux-asahi linux-asahi
Speakers linux-asahi (notes) linux-asahi (notes) linux-asahi (notes) linux-asahi (notes)
Microphones WIP WIP WIP -
Webcam linux-asahi linux-asahi linux-asahi -
SD card slot - - - -
1Gbps Ethernet - - - 6.4 (dts)
10Gbps Ethernet - - - 6.4 (dts)
Touch Bar - - linux-asahi -
TouchID TBA TBA TBA -

M2 Pro/Max/Ultra devices

Mac Mini
(2023)
MacBook Pro
(14/16-inch, 2023)
Mac Studio
(2023)
Mac Pro
(2023)
Installer yes yes yes WIP
Devicetree linux-asahi linux-asahi linux-asahi linux-asahi
Main display - linux-asahi - -
Keyboard - linux-asahi - -
KB backlight - linux-asahi - -
Touchpad - linux-asahi - -
Brightness - linux-asahi - -
Battery info - linux-asahi - -
WiFi linux-asahi linux-asahi linux-asahi linux-asahi
Bluetooth linux-asahi linux-asahi linux-asahi linux-asahi
HDMI Out linux-asahi linux-asahi linux-asahi linux-asahi
3.5mm jack linux-asahi linux-asahi linux-asahi linux-asahi
Speakers linux-asahi (notes) linux-asahi (notes) linux-asahi (notes) TBA
Microphones - TBA - -
Webcam - linux-asahi - -
SD card slot - 5.17 5.17 5.17
1Gbps Ethernet linux-asahi - - -
10Gbps Ethernet linux-asahi - linux-asahi linux-asahi
Touch Bar - - - -
TouchID - TBA TBA TBA

Note: Many peripherals depend on T600x DART, T8112 DART, and PCIe support.

Notes

cpuidle situation

Some power management functionality on ARM machines is controlled via the PSCI interface. The kernel has a specific way of talking to PSCI that is not compatible with Apple Silicon, and a discussion is required with upstream maintainers in order to figure out the best way forward. Given that this discussion has failed to materialise for two years, the decision has been made to hack together a driver that directly calls WFI/WFE instructions in order to bring this functionality to Asahi Linux. This greatly improves the UX on laptops when coupled with energy-aware scheduling, as it resolves the issue of the machines running warm to the touch and significantly improves battery life. This can never be upstreamed, however the hope is that this hacked together driver becomes unnecessary at some point in the near future.

ANE driver

An out of tree kernel module is available. It will be merged into linux-asahi.

Speakers

The speakers are enabled with separate patches due to a lsp-plugins bug. The bug causes full-scale artifacts which could potentially damage the speakers. A release including the fix is planned for 2023-12-24.

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