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SubjectRe: [PATCH v5 00/14] PCI: Add support for Apple M1
On Mon, Oct 4, 2021 at 3:38 AM Lorenzo Pieralisi
<lorenzo.pieralisi@arm.com> wrote:
>
> On Wed, Sep 29, 2021 at 05:38:33PM +0100, Marc Zyngier wrote:
> > This is v5 of the series adding PCIe support for the M1 SoC. Not a lot
> > has changed this time around, and most of what I was saying in [1] is
> > still valid.
> >
> > Very little has changed code wise (a couple of bug fixes). The series
> > however now carries a bunch of DT updates so that people can actually
> > make use of PCIe on an M1 box (OK, not quite, you will still need [2],
> > or whatever version replaces it). The corresponding bindings are
> > either already merged, or queued for 5.16 (this is the case for the
> > PCI binding).
> >
> > It all should be in a state that makes it mergeable (yeah, I said that
> > last time... I mean it this time! ;-).
> >
> > As always, comments welcome.
> >
> > M.
> >
> > [1] https://lore.kernel.org/r/20210922205458.358517-1-maz@kernel.org
> > [2] https://lore.kernel.org/r/20210921222956.40719-2-joey.gouly@arm.com
> >
> > Alyssa Rosenzweig (2):
> > PCI: apple: Add initial hardware bring-up
> > PCI: apple: Set up reference clocks when probing
> >
> > Marc Zyngier (10):
> > irqdomain: Make of_phandle_args_to_fwspec generally available
> > of/irq: Allow matching of an interrupt-map local to an interrupt
> > controller
> > PCI: of: Allow matching of an interrupt-map local to a PCI device
> > PCI: apple: Add INTx and per-port interrupt support
> > PCI: apple: Implement MSI support
> > iommu/dart: Exclude MSI doorbell from PCIe device IOVA range
> > PCI: apple: Configure RID to SID mapper on device addition
> > arm64: dts: apple: t8103: Add PCIe DARTs
> > arm64: dts: apple: t8103: Add root port interrupt routing
> > arm64: dts: apple: j274: Expose PCI node for the Ethernet MAC address
> >
> > Mark Kettenis (2):
> > arm64: apple: Add pinctrl nodes
> > arm64: apple: Add PCIe node
> >
> > MAINTAINERS | 7 +
> > arch/arm64/boot/dts/apple/t8103-j274.dts | 23 +
> > arch/arm64/boot/dts/apple/t8103.dtsi | 203 ++++++
> > drivers/iommu/apple-dart.c | 27 +
> > drivers/of/irq.c | 17 +-
> > drivers/pci/controller/Kconfig | 17 +
> > drivers/pci/controller/Makefile | 1 +
> > drivers/pci/controller/pcie-apple.c | 822 +++++++++++++++++++++++
> > drivers/pci/of.c | 10 +-
> > include/linux/irqdomain.h | 4 +
> > kernel/irq/irqdomain.c | 6 +-
> > 11 files changed, 1127 insertions(+), 10 deletions(-)
> > create mode 100644 drivers/pci/controller/pcie-apple.c
>
> I have applied (with very minor log changes) patches [1-9] to
> pci/apple for v5.16, I expect the dts changes to go via the
> arm-soc tree separately, please let me know if that works for you.

FYI, I pushed patches 1-3 to kernelCI and didn't see any regressions.
I am a bit worried about changes to the DT interrupt parsing and
ancient platforms (such as PowerMacs). Most likely there wouldn't be
any report until -rc1 or months later on those old systems.

Rob

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