linux-kernel - RE: [PATCH V3 3/4] ARM: dts: tegra: Correct PCIe entry

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Message-ID: <C79B248886DD134989C8FF6B096A91AB91B616BEEF@BGMAIL01.nvidia.com>
Date:	Tue, 11 Jun 2013 10:22:59 +0530
From:	Jay Agarwal <jagarwal@...dia.com>
To:	'Thierry Reding' <thierry.reding@...il.com>
CC:	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	"swarren@...dotorg.org" <swarren@...dotorg.org>,
	"thierry.reding@...onic-design.de" <thierry.reding@...onic-design.de>,
	"bhelgaas@...gle.com" <bhelgaas@...gle.com>,
	Laxman Dewangan <ldewangan@...dia.com>,
	"olof@...om.net" <olof@...om.net>, Hiroshi Doyu <hdoyu@...dia.com>,
	Prashant Gaikwad <pgaikwad@...dia.com>,
	"mturquette@...aro.org" <mturquette@...aro.org>,
	Peter De Schrijver <pdeschrijver@...dia.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Juha Tukkinen <jtukkinen@...dia.com>,
	Krishna Thota <kthota@...dia.com>
Subject: RE: [PATCH V3 3/4] ARM: dts: tegra: Correct PCIe entry


> On Wed, Jun 05, 2013 at 12:27:31AM +0530, Jay Agarwal wrote:
> [...]
> > @@ -29,7 +29,7 @@
> >  		ranges = <0x82000000 0 0x00000000 0x00000000 0 0x00001000
> /* port 0 configuration space */
> >  			  0x82000000 0 0x00001000 0x00001000 0 0x00001000
> /* port 1 configuration space */
> >  			  0x82000000 0 0x00004000 0x00004000 0 0x00001000
> /* port 2 configuration space */
> > -			  0x81000000 0 0          0x02000000 0 0x00010000   /*
> downstream I/O */
> > +			  0x81000000 0 0          0x02000000 0 0x00100000   /*
> downstream I/O */
> >  			  0x82000000 0 0x20000000 0x20000000 0 0x10000000
> /* non-prefetchable memory */
> >  			  0xc2000000 0 0x30000000 0x30000000 0 0x10000000>;
> /*
> > prefetchable memory */
> 
> That increases the I/O region size from 64 KiB to 1 MiB. Why is that
> necessary? I/O operations can only address 64 KiB, so I don't think adding
> more makes any sense.
> 
Okay, you can keep it 64KiB then, I did it to match with downstream. 
Please let me know if you want me to upload new patch for this or you will take care while integrating.
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