On Fri, 16 Sep 2022 15:25:40 +0100, Janne Grunau <j@xxxxxxxxxx> wrote: > > Hej, > > this series contains device trees for Apple's M1 Pro, Max and Ultra SoCs > and devices based on these SoCs. > > Quoting from the main commit: > > | These SoCs are found in Apple devices with M1 Pro (t6000), M1 Max > | (t6001) and M1 Ultra (t6002). > | > | t6000 is a cut-down version of t6001, so the former just includes the > | latter and disables the missing bits (This is currently just one PMGR > | node and all of its domains. > | > | t6002 is two connected t6001 dies. The implementation seems to use > | t6001 with blocks disabled (mostly on the second die). MMIO addresses on > | the second die have a constant offset. The interrupt controller is > | multi-die aware. This setup can be represented in the device tree with > | two top level "soc" nodes. The MMIO offset is applied via "ranges" and > | devices are included with preproceesor macros to make the node labels > | unique and to specify the die number for the interrupt definition. > | > | Device nodes are distributed over dtsi files based on whether they are > | present on both dies or just on the first die. The only execption is the > | NVMe controller which resides on the second die. Its nodes are in a > | separate file. > > This series depends for full functionality on t600x dart support (latest > version at > https://lore.kernel.org/linux-iommu/20220916094152.87137-1-j@xxxxxxxxxx/T/#t > expected to be picked up for 6.1). This is the usual device tree / > driver changes runtime dependency. > > Even with the t6000-dart support t600x devices are not terribly useful > in upstream. There is no input device support. The laptop's keyboard > and touchpad are missing SPI and HID over SPI drivers. The dwc3 > USB-C ports are not yet added since they require special handling > after disconnect. The PCIe based USB xhci controller in the Mac Studio > requires firmware downloaded in a similar way as USB_XHCI_PCI_RENESAS. > > To simplify dependency handling this series carries mostly identical > device tree additions for M1 and M1 Pro/Max/Ultra as part of the in > development audio support. > > The series passes dtbs_check with 3 additional dt bindings changes: > - "dt-bindings: apple,aic: Fix required item "apple,fiq-index" in > affinity description" (merged as da3b1c294d47 in Linus' repo) > - "ASoC: Add Apple MCA I2S transceiver bindings" (6ed462d1c11675) > in sound/for-next > - "dt-bindings: iommu: dart: add t6000 compatible" > https://lore.kernel.org/linux-iommu/20220901012519.7167-2-j@xxxxxxxxxx/ > > New bindings passes dt_binding_check. For the whole series: Acked-by: Marc Zyngier <maz@xxxxxxxxxx> M. -- Without deviation from the norm, progress is not possible.
