arm64: dts: apple: Add Apple T6040 (M4 Pro) SoC and MacBook Pro 14-inch (J614s) skeleton - #577
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arm64: dts: apple: Add Apple T6040 (M4 Pro) SoC and MacBook Pro 14-inch (J614s) skeleton#577ssk42 wants to merge 2 commits into
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Add a skeleton devicetree for the T6040 SoC, following the same minimal bring-up scope as t8132 (M4): CPUs, AICv3, PMGR syscon, watchdog, the four pinctrl instances, I2C/SPI controllers, fpwm and UART0. Register addresses and interrupt numbers are taken from a dump of the IODeviceTree registry plane of a MacBook Pro (14-inch, M4 Pro, Late 2024); the UART base independently matches m1n1's T6040 EARLY_UART_BASE. Known limitations, to be resolved with an on-hardware m1n1/proxyclient ADT dump: - CPU reg values use the MPIDR convention from t6031-base; not yet confirmed against silicon. - The PMGR window size is inherited from t8132 and no power domain child nodes are added yet. - GPIO pin counts are inherited from the t8132 generation; I2C/SPI pinctrl pinmux assignments are unknown and therefore omitted. New "apple,t6040-*" compatible strings lead each chain while existing driver-matched strings provide fallbacks, so no driver changes are required at this stage. Signed-off-by: ssk42 <sthreitz@gmail.com>
…etree Add initial support for the J614s target type. Serial console is enabled; framebuffer, reserved-memory and memory nodes are placeholders to be filled by the bootloader at boot time, matching the t8132 machine files. Signed-off-by: ssk42 <sthreitz@gmail.com>
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please don't create PRs for things you haven't even tested your self. |
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arm64: dts: apple: Add Apple T6040 (M4 Pro) SoC + MacBook Pro 14" (J614s) skeleton
RFC / early bring-up contribution. This adds the first devicetrees for the
T6040 SoC ("Brava Chop", M4 Pro) and one machine using it.
Data provenance
Every register address and interrupt number comes from a dump of the
IODeviceTree registry plane (
ioreg -lw0 -p IODeviceTree) of a liveMacBook Pro (14-inch, M4 Pro, Late 2024):
The UART address independently matches m1n1's
EARLY_UART_BASEfor T6040.Explicitly unverified / TODO before this can leave RFC
regvalues: MPIDR encoding follows the t6031-base convention(E cluster 0 at 0x0+i, P clusters N≥1 at 0x10000+(N<<8)+i). Not yet
confirmed on T6040 silicon; kboot prints per-CPU MPIDRs and hard-fails on
mismatch, so the first boot will confirm or correct these.
atc-phy,t6040) are absent from kboot_atc tables;IODeviceTree does not expose
apple,tunable-*, so these need aproxyclient ADT dump.
I plan to run m1n1 + proxyclient on the donor machine to close 1–4 and will
update this series with measured values.
Testing
make ARCH=arm64 apple/t6040-j614s.dtbbuilds clean in-tree (arm64 defconfig).Image.gzbuild passes with the DT integrated.dtc -@compile + decompile round-trip verified.Happy to restructure per reviewer preferences (e.g. splitting pinmux stubs,
dropping PMGR node entirely until the domain table exists).