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Message-ID: <CACoXjc=t1SuyE5jzHjGk7eNUjVCNW9_iqOTru8PQ191h=pP1sw@mail.gmail.com>
Date:	Fri, 14 Mar 2014 20:27:12 -0700
From:	Tanmay Inamdar <tinamdar@....com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Rob Landley <rob@...dley.net>,
	Liviu Dudau <liviu.dudau@....com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	linux-arm-kernel@...ts.infradead.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, patches <patches@....com>,
	Jon Masters <jcm@...hat.com>
Subject: Re: [PATCH v4 2/4] arm64: dts: APM X-Gene PCIe device tree nodes

On Fri, Mar 14, 2014 at 5:07 AM, Arnd Bergmann <arnd@...db.de> wrote:
> On Thursday 06 March 2014, Tanmay Inamdar wrote:
>> +             pcie0: pcie@...b0000 {
>> +                     status = "disabled";
>> +                     device_type = "pci";
>> +                     compatible = "apm,xgene-storm-pcie", "apm,xgene-pcie";
>> +                     #interrupt-cells = <1>;
>> +                     #size-cells = <2>;
>> +                     #address-cells = <3>;
>> +                     reg = < 0x00 0x1f2b0000 0x0 0x00010000   /* Controller registers */
>> +                             0xe0 0xd0000000 0x0 0x00200000>; /* PCI config space */
>> +                     reg-names = "csr", "cfg";
>> +                     ranges = <0x01000000 0x00 0x00000000 0xe0 0x00000000 0x00 0x00010000   /* io */
>> +                               0x02000000 0x00 0x10000000 0xe0 0x10000000 0x00 0x80000000>; /* mem */
>> +                     dma-ranges = <0x42000000 0x40 0x00000000 0x40 0x00000000 0x40 0x00000000>;
>> +                     interrupt-map-mask = <0x0 0x0 0x0 0x7>;
>> +                     interrupt-map = <0x0 0x0 0x0 0x1 &gic 0x0 0xc2 0x1
>> +                                      0x0 0x0 0x0 0x2 &gic 0x0 0xc3 0x1
>> +                                      0x0 0x0 0x0 0x3 &gic 0x0 0xc4 0x1
>> +                                      0x0 0x0 0x0 0x4 &gic 0x0 0xc5 0x1>;
>> +                     clocks = <&pcie0clk 0>;
>> +             };
>
> Is 0x40.0x00000000 the start of your RAM? I had expected RAM to start at 0.0,
> and in that case the dma-ranges property would be wrong.

RAM starting address is 0x40_00000000.

>
>         Arnd
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