History log of /linux-master/arch/arm64/boot/dts/apple/t600x-dieX.dtsi
Revision Date Author Comments
# d32c1530 15-Feb-2022 Hector Martin <marcan@marcan.st>

arm64: dts: apple: Add CPU topology & cpufreq nodes for t600x

Add the missing CPU topology/capacity information and the cpufreq nodes,
so we can have CPU frequency scaling and the scheduler has the
information it needs to make the correct decisions.

As with t8103, boost states are commented out pending PSCI/etc support
for deep sleep states.

Reviewed-by: Sven Peter <sven@svenpeter.dev>
Signed-off-by: Hector Martin <marcan@marcan.st>


# 7b0b0191 16-Sep-2022 Hector Martin <marcan@marcan.st>

arm64: dts: apple: Add initial t6000/t6001/t6002 DTs

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.

Co-developed-by: Janne Grunau <j@jannau.net>
Signed-off-by: Janne Grunau <j@jannau.net>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>