linux-kernel - Re: [PATCH v3 0/7] PCI: mvebu: add support for orion soc

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Date:   Mon, 7 Nov 2022 00:28:24 +0100
From:   Pali Rohár <pali@...nel.org>
To:     Lorenzo Pieralisi <lpieralisi@...nel.org>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Andrew Lunn <andrew@...n.ch>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Russell King <linux@...linux.org.uk>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Mauri Sandberg <maukka@....kapsi.fi>,
        linux-pci@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 0/7] PCI: mvebu: add support for orion soc

On Thursday 27 October 2022 16:10:48 Lorenzo Pieralisi wrote:
> On Mon, Sep 05, 2022 at 09:23:03PM +0200, Pali Rohár wrote:
> > Hello! This patch series add support for Orion PCIe controller into
> > pci-mvebu.c driver. V3 version has completely rewritten pci-mvebu.c code
> > to parse all physical addresses from device tree files according to
> > mvebu-pci.txt documentation, allow access to all extended PCIe config
> > space registers and use modern kernel API pci_remap_cfgspace() and
> > mvebu_mbus_add_window_by_id() fir mapping PCIe config space.
> > 
> > Most of Marvell device tree code in pci-mvebu.c is giant magic, but it was
> > there because this change and it is de-facto API between dts files and
> > kernel used for a long time. Note that it is misused according to PCI
> > device tree bindings, but we have to follow this Marvell bindings to do
> > not introduce backward incompatibility issues for other non-Orion
> > platforms.
> > 
> > Mauri tested these changes on DNS323 board with both DT and non-DT builds.
> > PCIe AER is working too (one of the feature which proved that access to
> > extended PCIe config registers is working fine).
> > 
> > After this patch is accepted we are planning to look at existing Orion
> > arch specific code and covert it to use this new DT based pci-mvebu.c
> > code. Later this would allow to kill arch specific Orion PCIe code,
> > which is in arch/arm/plat-orion/pcie.c and parts also in file
> > arch/arm/mach-orion5x/pci.c (shared with old-PCI bus code).
> > 
> > This patch series depends on another patches:
> > https://lore.kernel.org/linux-pci/20220524122817.7199-1-pali@kernel.org/
> > https://lore.kernel.org/linux-pci/20220817230036.817-3-pali@kernel.org/
> 
> Can this series be rebased please on top of v6.1-rc1 so that we can merge it ?

IIRC above two dependent patches still applies on master branch and this
patch series applies on above two dependent patches.

> Thanks,
> Lorenzo
> 
> > Mauri Sandberg (2):
> >   bus: mvebu-mbus: add configuration space aperture
> >   dt-bindings: PCI: mvebu: Add orion5x compatible
> > 
> > Pali Rohár (5):
> >   ARM: orion: Move PCIe mbus window mapping from orion5x_setup_wins() to
> >     pcie_setup()
> >   PCI: mvebu: Remove unused busn member
> >   PCI: mvebu: Cleanup error handling in mvebu_pcie_probe()
> >   PCI: mvebu: Add support for Orion PCIe controller
> >   ARM: dts: orion5x: Add PCIe node
> > 
> >  .../devicetree/bindings/pci/mvebu-pci.txt     |   4 +-
> >  arch/arm/boot/dts/orion5x.dtsi                |  51 +++++
> >  arch/arm/mach-orion5x/common.c                |  13 --
> >  arch/arm/mach-orion5x/pci.c                   |  14 ++
> >  drivers/bus/mvebu-mbus.c                      |  26 ++-
> >  drivers/pci/controller/Kconfig                |   4 +-
> >  drivers/pci/controller/pci-mvebu.c            | 202 ++++++++++++++----
> >  include/linux/mbus.h                          |   1 +
> >  8 files changed, 256 insertions(+), 59 deletions(-)
> > 
> > -- 
> > 2.20.1
> > 
> > 
> > _______________________________________________
> > linux-arm-kernel mailing list
> > linux-arm-kernel@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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