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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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