> -----Original Message----- > From: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx> > Sent: 2019年8月12日 18:06 > To: Xiaowei Bao <xiaowei.bao@xxxxxxx> > Cc: bhelgaas@xxxxxxxxxx; robh+dt@xxxxxxxxxx; mark.rutland@xxxxxxx; > shawnguo@xxxxxxxxxx; Leo Li <leoyang.li@xxxxxxx>; kishon@xxxxxx; > arnd@xxxxxxxx; gregkh@xxxxxxxxxxxxxxxxxxx; M.h. Lian > <minghuan.lian@xxxxxxx>; Mingkai Hu <mingkai.hu@xxxxxxx>; Roy Zang > <roy.zang@xxxxxxx>; kstewart@xxxxxxxxxxxxxxxxxxx; > pombredanne@xxxxxxxx; shawn.lin@xxxxxxxxxxxxxx; > linux-pci@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; > linux-kernel@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; > linuxppc-dev@xxxxxxxxxxxxxxxx > Subject: [EXT] Re: [PATCHv3 2/2] PCI: layerscape: Add > CONFIG_PCI_LAYERSCAPE_EP to build EP/RC separately > > Caution: EXT Email > > On Fri, Jun 28, 2019 at 09:38:26AM +0800, Xiaowei Bao wrote: > > Add CONFIG_PCI_LAYERSCAPE_EP to build EP/RC separately. > > > > Signed-off-by: Xiaowei Bao <xiaowei.bao@xxxxxxx> > > --- > > v2: > > - No change. > > v3: > > - modify the commit message. > > > > 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] > > What's "The RCW" ? This entry should explain why a kernel configuration > should enable it. [Xiaowei Bao] Hi Lorenzo, the RCW full name is "reset configuration word", it can be built to a bin file and program to the flash, rather than configure by kernel, almost the NXP Layerscaple platform use this way. > > Lorenzo > > > + 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 > >
