arm64: dts: apple: t8103: Add PWM controller

Adds PWM controller and keyboard backlight bindings for M1 MacBooks

Signed-off-by: Sasha Finkelstein <fnkl.kernel@gmail.com>
Acked-by: Sven Peter <sven@svenpeter.dev>
Signed-off-by: Hector Martin <marcan@marcan.st>

arm64: dts: apple: t8103: Disable unused PCIe ports

The PCIe ports are unused (without devices) so disable them instead of
removing them.

Fixes: 7c77ab91b33d ("arm64: dts: apple: Add missing M1 (t8103) devices")
Signed-off-by: Janne Grunau <j@jannau.net>
Reviewed-by: Sven Peter <sven@svenpeter.dev>
Signed-off-by: Hector Martin <marcan@marcan.st>

arm64: dts: apple: Add t8103 L1/L2 cache properties and nodes

The t8103 CPU nodes are missing the cache hierarchy information. The
cache hierarchy on Arm can not be detected and needs to be described in
DT. The OS scheduler can make use of this information for scheduling
decisions.

The cache size information is based on various articles about the
processors. There's also an L3 system level cache (SLC). It's not
described here because SLCs typically have some MMIO interface which
would need to be described.

Based on Rob Herring's patch adding cache properties and nodes for
t600x.

Link: https://lore.kernel.org/asahi/20221122220619.659174-1-robh@kernel.org/

Signed-off-by: Janne Grunau <j@jannau.net>
Signed-off-by: Hector Martin <marcan@marcan.st>

arm64: dts: apple: Rename dart-sio* to sio-dart*

All the other DARTs are named foo-dart, so let's keep things consistent.

Fixes: 51979fbb7fb8 ("arm64: dts: apple: t600x: Add MCA and its support")
Fixes: 8a3df85ad87d ("arm64: dts: apple: t8103: Add MCA and its support")
Reviewed-by: Sven Peter <sven@svenpeter.dev>
Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
Signed-off-by: Hector Martin <marcan@marcan.st>

arch: arm64: apple: t8103: Use standard "iommu" node name

The PCIe iommu nodes use "dart" as node names. Replace it with the
the standard "iommu" node name as all other iommu nodes.

Fixes: 3c866bb79577 ("arm64: dts: apple: t8103: Add PCIe DARTs")
Signed-off-by: Janne Grunau <j@jannau.net>
Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
Signed-off-by: Hector Martin <marcan@marcan.st>

arm64: dts: apple: Add CPU topology & cpufreq nodes for t8103

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.

Boost states are commented out, as they are not yet available (that
requires CPU deep sleep support, to be eventually done via PSCI).
The driver supports them fine; the hardware will just refuse to ever
go into them at this time, so don't expose them to users until that's
done.

Acked-by: Marc Zyngier <maz@kernel.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Hector Martin <marcan@marcan.st>

arm64: dts: apple: Add ADMAC resets on t8103/t600x

There's a shared reset for the ADMAC and MCA peripherals. The MCA node
already describes it, and being a shared reset it is important we
describe it on the ADMAC node too.

Signed-off-by: Martin Povišer <povik+lin@cutebit.org>
Signed-off-by: Hector Martin <marcan@marcan.st>

arm64: dts: apple: t8103: Add MCA and its support

Add the MCA I2S transceiver node and its supporting NCO, ADMAC nodes.

Signed-off-by: Martin Povišer <povik+lin@cutebit.org>
Signed-off-by: Janne Grunau <j@jannau.net>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>

arm64: dts: apple: t8103: Add ANS2 NVMe nodes

This allows using the internal disk attached via NVMe.

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

arm64: dts: apple: Add t8303 PMU nodes

Advertise the two PMU nodes for the t8103 SoC.

Reviewed-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Marc Zyngier <maz@kernel.org>

arm64: dts: apple: Add t8103 PMU interrupt affinities

The two PMU pseudo interrupts have specific affinities. One set
is affine to the small cores, and the other set affine to the
big ones.

Signed-off-by: Marc Zyngier <maz@kernel.org>

arm64: dts: apple: t8103: Sort nodes by address

We decided to keep SoC nodes sorted by address for sanity; fix a couple
that slipped into the wrong place.

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

arm64: dts: apple: t8103: Rename clk24 to clkref

We now know that this frequency comes from the external reference
oscillator and is used for various SoC blocks, and isn't just a random
24MHz clock, so let's call it something more appropriate.

Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Sven Peter <sven@svenpeter.dev>
Signed-off-by: Hector Martin <marcan@marcan.st>

arm64: dts: apple: t8103: Add watchdog node

Add the watchdog node which also enables reboot support on the t8103.

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

arm64: dts: apple: t8103: Remove PCIe max-link-speed properties

The driver doesn't support these, they shouldn't be in the SoC include
anyway, and we're now configuring this in the bootloader instead. This
also solves the j274 1G/10G Ethernet variant discrepancy, since that
will now be configured properly based on the dynamic ADT property.

Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>

arm64: dts: apple: t8103: Add UART2

This UART is connected to the debug port of the WLAN module. It is
mostly useless, but makes for a good test case for runtime-pm without
having to unbind the console from the main system UART.

Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
Signed-off-by: Hector Martin <marcan@marcan.st>

arm64: dts: apple: t8103: Add PMGR nodes

This adds the two PMGR nodes and all known power state subnodes. Since
there are a large number of them, let's put them in a separate file to
include.

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

arm64: dts: apple: t8103: Add i2c nodes

Apple M1 has at least 5 i2c controllers. i2c0, i2c1 and i2c3 are used
on all M1 Mac devices. The 2020 Mac Mini uses i2c2 and the 13-inch
MacBook Pro uses i2c2 and i2c4.

Signed-off-by: Janne Grunau <j@jannau.net>
Reviewed-by: Sven Peter <sven@svenpeter.dev>
Tested-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Hector Martin <marcan@marcan.st>

arm64: dts: apple: add #interrupt-cells property to pinctrl nodes

Required for devices trying to use pinctrl devices as interrupt
controller.

Fixes: 0a8282b83119 ("arm64: apple: Add pinctrl nodes")
Signed-off-by: Janne Grunau <j@jannau.net>
Cc: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Sven Peter <sven@svenpeter.dev>
Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
Tested-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Hector Martin <marcan@marcan.st>

arm64: dts: apple: t8103: Mark PCIe PERST# polarity active low in DT

As the name indicates, PERST# is active low. Fix the DT description to
match the HW behaviour.

Fixes: ff2a8d91d80c ("arm64: apple: Add PCIe node")
Link: https://lore.kernel.org/r/20211123180636.80558-3-maz@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>

arm64: dts: apple: t8103: Add root port interrupt routing

Add the interrupt-map properties that are required for INTx
signalling.

Tested-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>

arm64: dts: apple: t8103: Add PCIe DARTs

PCIe on the Apple M1 (aka t8103) requires the use of IOMMUs (aka
DARTs). Add the three instances that deal with the internal PCIe
ports and route each port's traffic through its DART.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>

arm64: apple: Add PCIe node

Add node corresponding to the apcie,t8103 node in the
Apple device tree for the Mac mini (M1, 2020).

Power domain references and DART (IOMMU) references are left out
at the moment and will be added once the appropriate bindings have
been settled upon.

Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210921183420.436-5-kettenis@openbsd.org
Signed-off-by: Hector Martin <marcan@marcan.st>

arm64: apple: Add pinctrl nodes

Add pinctrl nodes corresponding to the gpio,t8101 nodes in the
Apple device tree for the Mac mini (M1, 2020).

Clock references are left out at the moment and will be added once
the appropriate bindings have been settled upon.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210520171310.772-3-mark.kettenis@xs4all.nl
Signed-off-by: Hector Martin <marcan@marcan.st>

arm64: apple: Add initial Apple Mac mini (M1, 2020) devicetree

This currently supports:

* SMP (via spin-tables)
* AIC IRQs
* Serial (with earlycon)
* Framebuffer

A number of properties are dynamic, and based on system firmware
decisions that vary from version to version. These are expected
to be filled in by the loader.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>