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Message-ID: <AM5PR04MB329928579BA98A3429A0B412F5FD0@AM5PR04MB3299.eurprd04.prod.outlook.com>
Date:   Thu, 27 Jun 2019 02:00:47 +0000
From:   Xiaowei Bao <xiaowei.bao@....com>
To:     Bjorn Helgaas <helgaas@...nel.org>
CC:     "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        Leo Li <leoyang.li@....com>, "kishon@...com" <kishon@...com>,
        "lorenzo.pieralisi@....com" <lorenzo.pieralisi@....com>,
        "arnd@...db.de" <arnd@...db.de>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "M.h. Lian" <minghuan.lian@....com>,
        Mingkai Hu <mingkai.hu@....com>, Roy Zang <roy.zang@....com>,
        "kstewart@...uxfoundation.org" <kstewart@...uxfoundation.org>,
        "pombredanne@...b.com" <pombredanne@...b.com>,
        "shawn.lin@...k-chips.com" <shawn.lin@...k-chips.com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>
Subject: RE: [EXT] Re: [PATCHv2 2/2] PCI: layerscape: EP and RC drivers are
 compiled separately

Hi Bjorn,

> -----Original Message-----
> From: Bjorn Helgaas <helgaas@...nel.org>
> Sent: 2019年6月27日 1:52
> To: Xiaowei Bao <xiaowei.bao@....com>
> Cc: robh+dt@...nel.org; mark.rutland@....com; shawnguo@...nel.org; Leo
> Li <leoyang.li@....com>; kishon@...com; lorenzo.pieralisi@....com;
> arnd@...db.de; gregkh@...uxfoundation.org; M.h. Lian
> <minghuan.lian@....com>; Mingkai Hu <mingkai.hu@....com>; Roy Zang
> <roy.zang@....com>; kstewart@...uxfoundation.org;
> pombredanne@...b.com; shawn.lin@...k-chips.com;
> linux-pci@...r.kernel.org; devicetree@...r.kernel.org;
> linux-kernel@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> linuxppc-dev@...ts.ozlabs.org
> Subject: [EXT] Re: [PATCHv2 2/2] PCI: layerscape: EP and RC drivers are
> compiled separately
> 
> Caution: EXT Email
> 
> If you post another revision for any reason, please change the subject so it's
> worded as a command and mentions the new config options, e.g.,
> 
>   PCI: layerscape: Add CONFIG_PCI_LAYERSCAPE_EP to build EP/RC
> separately
[Xiaowei Bao] OK, thanks, this subject looks well.
> 
> On Wed, Jun 26, 2019 at 07:11:39PM +0800, Xiaowei Bao wrote:
> > Compile the EP and RC drivers separately with different configuration
> > options, this looks clearer.
> >
> > Signed-off-by: Xiaowei Bao <xiaowei.bao@....com>
> > ---
> > v2:
> >  - No change.
> >
> >  drivers/pci/controller/dwc/Kconfig  |   20 ++++++++++++++++++--
> >  drivers/pci/controller/dwc/Makefile |    3 ++-
> >  2 files changed, 20 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/pci/controller/dwc/Kconfig
> > b/drivers/pci/controller/dwc/Kconfig
> > index a6ce1ee..a41ccf5 100644
> > --- a/drivers/pci/controller/dwc/Kconfig
> > +++ b/drivers/pci/controller/dwc/Kconfig
> > @@ -131,13 +131,29 @@ config PCI_KEYSTONE_EP
> >         DesignWare core functions to implement the driver.
> >
> >  config PCI_LAYERSCAPE
> > -     bool "Freescale Layerscape PCIe controller"
> > +     bool "Freescale Layerscape PCIe controller - Host mode"
> >       depends on OF && (ARM || ARCH_LAYERSCAPE || COMPILE_TEST)
> >       depends on PCI_MSI_IRQ_DOMAIN
> >       select MFD_SYSCON
> >       select PCIE_DW_HOST
> >       help
> > -       Say Y here if you want PCIe controller support on Layerscape SoCs.
> > +       Say Y here if you want to enable PCIe controller support on
> Layerscape
> > +       SoCs to work in Host mode.
> > +       This controller can work either as EP or RC. The
> RCW[HOST_AGT_PEX]
> > +       determines which PCIe controller works in EP mode and which
> PCIe
> > +       controller works in RC mode.
> > +
> > +config PCI_LAYERSCAPE_EP
> > +     bool "Freescale Layerscape PCIe controller - Endpoint mode"
> > +     depends on OF && (ARM || ARCH_LAYERSCAPE || COMPILE_TEST)
> > +     depends on PCI_ENDPOINT
> > +     select PCIE_DW_EP
> > +     help
> > +       Say Y here if you want to enable PCIe controller support on
> Layerscape
> > +       SoCs to work in Endpoint mode.
> > +       This controller can work either as EP or RC. The
> RCW[HOST_AGT_PEX]
> > +       determines which PCIe controller works in EP mode and which
> PCIe
> > +       controller works in RC mode.
> >
> >  config PCI_HISI
> >       depends on OF && (ARM64 || COMPILE_TEST) diff --git
> > a/drivers/pci/controller/dwc/Makefile
> > b/drivers/pci/controller/dwc/Makefile
> > index b085dfd..824fde7 100644
> > --- a/drivers/pci/controller/dwc/Makefile
> > +++ b/drivers/pci/controller/dwc/Makefile
> > @@ -8,7 +8,8 @@ obj-$(CONFIG_PCI_EXYNOS) += pci-exynos.o
> >  obj-$(CONFIG_PCI_IMX6) += pci-imx6.o
> >  obj-$(CONFIG_PCIE_SPEAR13XX) += pcie-spear13xx.o
> >  obj-$(CONFIG_PCI_KEYSTONE) += pci-keystone.o
> > -obj-$(CONFIG_PCI_LAYERSCAPE) += pci-layerscape.o pci-layerscape-ep.o
> > +obj-$(CONFIG_PCI_LAYERSCAPE) += pci-layerscape.o
> > +obj-$(CONFIG_PCI_LAYERSCAPE_EP) += pci-layerscape-ep.o
> >  obj-$(CONFIG_PCIE_QCOM) += pcie-qcom.o
> >  obj-$(CONFIG_PCIE_ARMADA_8K) += pcie-armada8k.o
> >  obj-$(CONFIG_PCIE_ARTPEC6) += pcie-artpec6.o
> > --
> > 1.7.1
> >

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