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Message-ID: <330ca207dcbcb41b9d094fb2606c45e4173fa8f6.camel@suse.de>
Date:   Wed, 15 Jan 2020 13:45:23 +0100
From:   Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Cc:     devicetree@...r.kernel.org, f.fainelli@...il.com, maz@...nel.org,
        phil@...pberrypi.org, linux-kernel@...r.kernel.org,
        jeremy.linton@....com, mbrugger@...e.com,
        bcm-kernel-feedback-list@...adcom.com, wahrenst@....net,
        james.quinlan@...adcom.com, linux-pci@...r.kernel.org,
        andrew.murray@....com, linux-arm-kernel@...ts.infradead.org,
        linux-rpi-kernel@...ts.infradead.org
Subject: Re: [PATCH v5 0/6] Raspberry Pi 4 PCIe support

On Wed, 2020-01-15 at 12:02 +0000, Lorenzo Pieralisi wrote:
> On Mon, Dec 16, 2019 at 12:01:06PM +0100, Nicolas Saenz Julienne wrote:
> > This series aims at providing support for Raspberry Pi 4's PCIe
> > controller, which is also shared with the Broadcom STB family of
> > devices.
> > 
> > There was a previous attempt to upstream this some years ago[1] but was
> > blocked as most STB PCIe integrations have a sparse DMA mapping[2] which
> > is something currently not supported by the kernel.  Luckily this is not
> > the case for the Raspberry Pi 4.
> > 
> > Note the series is based on top of linux next, as the DTS patch depends
> > on it.
> > 
> > [1] https://patchwork.kernel.org/cover/10605933/
> > [2] https://patchwork.kernel.org/patch/10605957/
> > 
> > ---
> > 
> > Changes since v4:
> >   - Rebase DTS patch
> >   - Respin log2.h code into it's own series as it's still contentious
> >     yet mostly unrelated to the PCIe part
> > 
> > Changes since v3:
> >   - Moved all the log2.h related changes at the end of the series, as I
> >     presume they will be contentious and I don't want the PCIe patches
> >     to depend on them. Ultimately I think I'll respin them on their own
> >     series but wanted to keep them in for this submission just for the
> >     sake of continuity.
> >   - Addressed small nits here and there.
> > 
> > Changes since v2:
> >   - Redo register access in driver avoiding indirection while keeping
> >     the naming intact
> >   - Add patch editing ARM64's config
> >   - Last MSI cleanups, notably removing MSIX flag
> >   - Got rid of all _RB writes
> >   - Got rid of all of_data
> >   - Overall churn removal
> >   - Address the rest of Andrew's comments
> > 
> > Changes since v1:
> >   - add generic rounddown/roundup_pow_two64() patch
> >   - Add MAINTAINERS patch
> >   - Fix Kconfig
> >   - Cleanup probe, use up to date APIs, exit on MSI failure
> >   - Get rid of linux,pci-domain and other unused constructs
> >   - Use edge triggered setup for MSI
> >   - Cleanup MSI implementation
> >   - Fix multiple cosmetic issues
> >   - Remove supend/resume code
> > 
> > Jim Quinlan (3):
> >   dt-bindings: PCI: Add bindings for brcmstb's PCIe device
> >   PCI: brcmstb: Add Broadcom STB PCIe host controller driver
> >   PCI: brcmstb: Add MSI support
> > 
> > Nicolas Saenz Julienne (3):
> >   ARM: dts: bcm2711: Enable PCIe controller
> >   MAINTAINERS: Add brcmstb PCIe controller
> >   arm64: defconfig: Enable Broadcom's STB PCIe controller
> > 
> >  .../bindings/pci/brcm,stb-pcie.yaml           |   97 ++
> >  MAINTAINERS                                   |    4 +
> >  arch/arm/boot/dts/bcm2711.dtsi                |   31 +-
> >  arch/arm64/configs/defconfig                  |    1 +
> >  drivers/pci/controller/Kconfig                |    9 +
> >  drivers/pci/controller/Makefile               |    1 +
> >  drivers/pci/controller/pcie-brcmstb.c         | 1007 +++++++++++++++++
> >  7 files changed, 1149 insertions(+), 1 deletion(-)
> >  create mode 100644 Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
> >  create mode 100644 drivers/pci/controller/pcie-brcmstb.c
> 
> Applied patches [1,3,4] to pci/brcmstb, please have a look to check
> everything is in order after the minor update I included.

Looks good to me.

Thanks,
Nicolas


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