Re: [PATCH v7 2/3] dwc: PCI: intel: PCIe RC controller driver

[Jingoo Han]

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

[.....]