Skip to content

M3 Series Feature Support

ydalton edited this page Nov 7, 2023 · 11 revisions

This page details currently supported features on all M3 series (M3, M3 Pro, M3 Max) 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 linux-asahi, and should be upstream by the release indicated
  • linux-asahi: the feature is (mostly) stable and available for use in Fedora Asahi Remix and in linux-asahi
  • asahi-edge: the feature is (mostly) stable and available for use in Fedora Asahi Remix. For historical reason it is available in the linux-asahi-edge package in the linux-asahi Linux distribution
  • 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

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

Note that as these machines have not been released for general availability yet, supported and missing features are predictions based on what Apple has changed on a per-SoC and per-machine basis in the past. This page will change rapidly once work begins on support for these machines.

SoC blocks

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

M3
(T8122)
M3 Pro/Max
(T603x)
DCP TBA TBA
USB2 (TB ports) linux-asahi linux-asahi
USB3 (TB ports) linux-asahi linux-asahi
Thunderbolt TBA TBA
DP Alt Mode WIP WIP
GPU TBA TBA
Video Decoder TBA TBA
NVMe 5.19 5.19
PCIe TBA TBA
PCIe (GE) - -
cpufreq 6.2 6.2
cpuidle linux-asahi (notes) linux-asahi (notes)
Suspend/sleep asahi-edge asahi-edge
Video Encoder TBA TBA
ProRes Codec TBA TBA
AICv3 TBA TBA
DART TBA TBA
PMU TBA TBA
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)

M3 devices

iMac
(2023)
MacBook Pro
(14-inch, late 2023)
Installer no no
Devicetree TBA TBA
Main display TBA TBA
Keyboard - TBA
KB backlight - TBA
Touchpad - TBA
Brightness TBA TBA
Battery info - TBA
WiFi TBA TBA
Bluetooth TBA TBA
HDMI Out - TBA
3.5mm jack TBA TBA
Speakers TBA TBA
Microphones TBA TBA
Webcam TBA TBA
SD card slot - TBA
1Gbps Ethernet TBA -
10Gbps Ethernet - -
TouchID - TBA

M3 Pro/Max devices

MacBook Pro
(14/16-inch, late 2023)
Installer no
Devicetree TBA
Main display TBA
Keyboard linux-asahi
KB backlight linux-asahi
Touchpad linux-asahi
Brightness TBA
Battery info linux-asahi
WiFi TBA
Bluetooth TBA
HDMI Out TBA
3.5mm jack linux-asahi
Speakers WIP
Microphones TBA
Webcam TBA
SD card slot 5.17
1Gbps Ethernet -
10Gbps Ethernet -
TouchID TBA

Note: Many peripherals depend on 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.

Clone this wiki locally