On 11/14/19, 9:31 PM, Dilip Kota wrote: > Add support to PCIe RC controller on Intel Gateway SoCs. > PCIe controller is based of Synopsys DesignWare PCIe core. > > Intel PCIe driver requires Upconfigure support, Fast Training > Sequence and link speed configurations. So adding the respective > helper functions in the PCIe DesignWare framework. > It also programs hardware autonomous speed during speed > configuration so defining it in pci_regs.h. > > Signed-off-by: Dilip Kota <eswara.kota@xxxxxxxxxxxxxxx> > Reviewed-by: Andrew Murray <andrew.murray@xxxxxxx> > Acked-by: Gustavo Pimentel <gustavo.pimentel@xxxxxxxxxxxx> > --- [.....] > drivers/pci/controller/dwc/Kconfig | 10 + > drivers/pci/controller/dwc/Makefile | 1 + > drivers/pci/controller/dwc/pcie-designware.c | 57 +++ > drivers/pci/controller/dwc/pcie-designware.h | 12 + > drivers/pci/controller/dwc/pcie-intel-gw.c | 542 +++++++++++++++++++++++++++ > include/uapi/linux/pci_regs.h | 1 + > 6 files changed, 623 insertions(+) > create mode 100644 drivers/pci/controller/dwc/pcie-intel-gw.c > > diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig > index 0ba988b5b5bc..fb6d474477df 100644 > --- a/drivers/pci/controller/dwc/Kconfig > +++ b/drivers/pci/controller/dwc/Kconfig > @@ -82,6 +82,16 @@ config PCIE_DW_PLAT_EP > order to enable device-specific features PCI_DW_PLAT_EP must be > selected. > > +config PCIE_INTEL_GW > + bool "Intel Gateway PCIe host controller support" > + depends on OF && (X86 || COMPILE_TEST) > + select PCIE_DW_HOST > + help > + Say 'Y' here to enable PCIe Host controller support on Intel > + Gateway SoCs. > + The PCIe controller uses the DesignWare core plus Intel-specific > + hardware wrappers. > + Please add this config alphabetical order! So, this config should be after 'config PCI_IMX6'. There is no reason to put this config at the first place. > config PCI_EXYNOS > bool "Samsung Exynos PCIe controller" > depends on SOC_EXYNOS5440 || COMPILE_TEST > diff --git a/drivers/pci/controller/dwc/Makefile b/drivers/pci/controller/dwc/Makefile > index b30336181d46..99db83cd2f35 100644 > --- a/drivers/pci/controller/dwc/Makefile > +++ b/drivers/pci/controller/dwc/Makefile > @@ -3,6 +3,7 @@ obj-$(CONFIG_PCIE_DW) += pcie-designware.o > obj-$(CONFIG_PCIE_DW_HOST) += pcie-designware-host.o > obj-$(CONFIG_PCIE_DW_EP) += pcie-designware-ep.o > obj-$(CONFIG_PCIE_DW_PLAT) += pcie-designware-plat.o > +obj-$(CONFIG_PCIE_INTEL_GW) += pcie-intel-gw.o Ditto. Best regards, Jingoo Han > obj-$(CONFIG_PCI_DRA7XX) += pci-dra7xx.o > obj-$(CONFIG_PCI_EXYNOS) += pci-exynos.o > obj-$(CONFIG_PCI_IMX6) += pci-imx6.o > diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c > index 820488dfeaed..479e250695a0 100644 [.....]
