linux-kernel - Re: [PATCH v9 2/2] PCI: Rockchip: Add Rockchip PCIe controller support

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Date:   Thu, 18 Aug 2016 16:24:44 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Shawn Lin <shawn.lin@...k-chips.com>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Marc Zyngier <marc.zyngier@....com>, linux-pci@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
        linux-rockchip@...ts.infradead.org,
        Heiko Stuebner <heiko@...ech.de>,
        Doug Anderson <dianders@...omium.org>,
        Wenrui Li <wenrui.li@...k-chips.com>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        Brian Norris <briannorris@...omium.org>
Subject: Re: [PATCH v9 2/2] PCI: Rockchip: Add Rockchip PCIe controller
 support

Hi Shawn,

On Thu, Aug 04, 2016 at 03:52:08PM +0800, Shawn Lin wrote:
> This patch adds Rockchip PCIe controller support found
> on RK3399 Soc platform.

> --- a/drivers/pci/host/Kconfig
> +++ b/drivers/pci/host/Kconfig
> @@ -264,4 +264,15 @@ config PCIE_ARTPEC6
>  	  Say Y here to enable PCIe controller support on Axis ARTPEC-6
>  	  SoCs.  This PCIe controller uses the DesignWare core.
>  
> +config PCIE_ROCKCHIP
> +	bool "Rockchip PCIe controller"
> +	depends on ARM64 && ARCH_ROCKCHIP

I don't see any actual ARM64 dependencies in the code (which is a very
good thing!).  Can we remove the "depends on ARM64" part?

> +	depends on OF
> +	depends on PCI_MSI_IRQ_DOMAIN
> +	select MFD_SYSCON
> +	help
> +	  Say Y here if you want internal PCI support on Rockchip SoC.
> +	  There is 1 internal PCIe port available to support GEN2 with
> +	  4 slots.