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Date: Fri, 11 Mar 2016 13:46:00 -0600
From: Bjorn Helgaas <helgaas@kernel.org>
To: Joao Pinto <Joao.Pinto@synopsys.com>
Cc: Liviu Dudau <Liviu.Dudau@arm.com>, catalin.marinas@arm.com,
	linux-pci@vger.kernel.org,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Subject: Re: Request for Info: Designware PCIe Root Complex support in ARM64
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[+cc Lorenzo]

On Fri, Mar 11, 2016 at 11:33:12AM +0000, Joao Pinto wrote:
> Hi Liviu, Catalin and Bjorn,
> 
> I am currently working on the PCIe Root Complex based on the Designware Core
> (/pci/host/pcie-desigware.c). I have noticed that currently building a solution
> based on the previous for an ARM64 CPU is problematic and demands some tweaking
> in the ARM64 arch (like adding some functions in the pcibios, etc.).

If I understand you correctly, you're saying that pcie-designware.c
doesn't build on arm64.  It would be helpful to know exactly what
problem you're seeing (what kernel version, what config, what the
error are, etc.)

PCI_LAYERSCAPE, PCI_HISI, and PCIE_QCOM can all be enabled on arm64,
and it looks like they all depend on pcie-designware.c.  I can't build
those drivers personally, but I assume they work.

Bjorn