linux-kernel - Re: [PATCH V3 0/4] PCI: exynos: use the PHY generic framework

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Message-ID: <20170217195146.GA17762@bhelgaas-glaptop.roam.corp.google.com>
Date:   Fri, 17 Feb 2017 13:51:46 -0600
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Jaehoon Chung <jh80.chung@...sung.com>
Cc:     linux-pci@...r.kernel.org, bhelgaas@...gle.com, krzk@...nel.org,
        linux-kernel@...r.kernel.org, jingoohan1@...il.com,
        javier@....samsung.com, kgene@...nel.org,
        linux-samsung-soc@...r.kernel.org, cpgs@...sung.com,
        niyas.ahmed@...sung.com, alim.akhtar@...sung.com,
        pankaj.dubey@...sung.com, kishon@...com,
        devicetree@...r.kernel.org, mark.rutland@....com,
        vivek.gautam@...eaurora.org, robh+dt@...nel.org
Subject: Re: [PATCH V3 0/4] PCI: exynos: use the PHY generic framework

On Thu, Feb 16, 2017 at 07:33:15AM +0900, Jaehoon Chung wrote:
> Dear Bjorn,
> 
> On 02/16/2017 06:11 AM, Bjorn Helgaas wrote:
> > On Mon, Feb 13, 2017 at 05:26:09PM +0900, Jaehoon Chung wrote:
> >> This patcheset is for using PHY generic framework.
> >> Current pci-exyns doesn't use the phy framework since there haven't been on
> >> PHY subsystem when Exynos5440 had bean upstreamed.
> >> It's making a difficult to upstream the other Exynos variants because of different
> >> PHY registers.
> >>
> >> This patcheset has the below modifications:
> >> 1) Introduces the phy-exynos-pcie
> >> 2) Handles PHY register from PHY framework for pci-exynos
> >> 3) Modifies the dt-binding of pci-exynos
> >> 4) Maintains the backward compatibility
> >>
> >> Changelog on V3:
> >> - Drops "ARM: dts: exynos5440: support the phy-pcie node of pcie"
> >>   : Will send this patch after applying this patchset.
> >> - Fixes typo
> >> - Based on latest PCI git repository (host-exynos branch)
> >> - Changes commit message
> >> - Removes the dependency
> >>
> >> Changelog on V2:
> >> - Keep current codes for backward compatibility
> >> - Fixes some typos
> >> - Split the patches for removing the dependency
> >> - Removes the unnecessary codes
> >> - Change the patch's sequence
> >> - Based on latest PCI git repository.(next branch)
> >>
> >> Jaehoon Chung (4):
> >>   Documetation: samsung-phy: add the exynos-pcie-phy binding
> >>   phy: phy-exynos-pcie: Add support for Exynos PCIe phy
> >>   Documetation: binding: modify the exynos5440 pcie binding
> >>   PCI: exynos: support the using PHY generic framework
> >>
> >>  .../bindings/pci/samsung,exynos5440-pcie.txt       |  29 +++
> >>  .../devicetree/bindings/phy/samsung-phy.txt        |  17 ++
> >>  drivers/pci/host/pci-exynos.c                      |  54 +++-
> >>  drivers/phy/Kconfig                                |   8 +
> >>  drivers/phy/Makefile                               |   1 +
> >>  drivers/phy/phy-exynos-pcie.c                      | 285 +++++++++++++++++++++
> >>  6 files changed, 390 insertions(+), 4 deletions(-)
> >>  create mode 100644 drivers/phy/phy-exynos-pcie.c
> > 
> > I made the updates Vivek suggested and provisionally added these to my
> > pci/host-exynos branch to get some build testing.
> 
> Thanks!
> 
> > 
> > Kishon, I guess it probably makes more sense for me to apply this
> > because even though the drivers/pci changes are small, I think they
> > depend on other pci-exynos.c changes that are on my branch but not in
> > Linus' tree yet.

I haven't heard from Kishon, but I merged these to my -next branch for
v4.11.

Bjorn