Sven Peter continues work on upstreaming more of the Apple SoC support to the mainline Linux kernel. On the DeviceTree side following the DT support for Apple T2 SoCs sent out last month, another set of updates were submitted this week ahead of the Linux 6.15 merge window.

This second round of DeviceTree updates for Apple SoCs in Linux 6.15 brings a variety of additions:

"This one adds nodes for SPI controller, SPI NOR flash and NVRAM partitions for M1 and M2 devices. The SPI controller driver has been merged for a while already and we just forgot to pick the device tree changes up. It also adds the touchbar digitizer nodes. The corresponding driver and dt-bindings are already in -next and should be part of the 6.15 merge window as well.
...
- Added a missing p-state for iPad mini 4
- Added SPI controller nodes for M1 and M2 devices
- Added SPI NOR flash nodes and NVRAM partitions
- Added touchbar digitizer nodes for M1 and M2 devices"

More details via this pull request for those interested.