From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Cc: Jingoo Han <jg1.han@samsung.com>,
'Jason Gunthorpe' <jgunthorpe@obsidianresearch.com>,
'Thomas Petazzoni' <thomas.petazzoni@free-electrons.com>,
linux-samsung-soc@vger.kernel.org,
'Siva Reddy Kallam' <siva.kallam@samsung.com>,
'Surendranath Gurivireddy Balla' <suren.reddy@samsung.com>,
linux-pci@vger.kernel.org, devicetree-discuss@lists.ozlabs.org,
'Thierry Reding' <thierry.reding@avionic-design.de>,
linux-kernel@vger.kernel.org,
'Grant Likely' <grant.likely@secretlab.ca>,
'Kukjin Kim' <kgene.kim@samsung.com>,
'Thomas Abraham' <thomas.abraham@linaro.org>,
'Bjorn Helgaas' <bhelgaas@google.com>,
'Andrew Murray' <andrew.murray@arm.com>
Subject: Re: [PATCH 6/6] ARM: dts: Add pcie controller node for Samsung EXYNOS5440 SoC
Date: Fri, 07 Jun 2013 13:59:43 +0200 [thread overview]
Message-ID: <1880458.2ksb8qtzHh@wuerfel> (raw)
In-Reply-To: <000c01ce6360$237a7040$6a6f50c0$@samsung.com>
On Friday 07 June 2013 18:19:40 Jingoo Han wrote:
> Hi Jason Gunthorpe,
>
> I implemented 'Single domain' with Exynos PCIe for last two months;
> however, it cannot work properly due to the hardware restriction.
> Each MEM region is hard-wired.
>
> Thus, I will send Exynos PCIe V3 patch as 'Separate domains'.
Yes, I think that is best, if the hardware is clearly designed as
separate domains, this is what we should do by default in the
driver. For the Marvell case with its 10 separate ports, much
more address space would be wasted by having one domain per
port and that hardware let us work around it by remapping the
physical address space windows. For Exynos there is much less to
lose and I too cannot see how it would be done in the first
place.
Arnd
next prev parent reply other threads:[~2013-06-07 11:59 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-23 4:04 [PATCH 1/6] of/pci: Provide support for parsing PCI DT ranges property Jingoo Han
[not found] ` <00c001ce277b$92b26ab0$b8174010$%han-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2013-03-23 4:05 ` [PATCH 2/6] of/pci: Add of_pci_parse_bus_range() function Jingoo Han
2013-03-23 4:07 ` [PATCH 4/6] pci: Add PCIe driver for Samsung Exynos Jingoo Han
2013-03-26 21:33 ` Rob Herring
2013-03-27 1:29 ` Jingoo Han
2013-03-23 4:06 ` [PATCH 3/6] pci: infrastructure to add drivers in drivers/pci/host Jingoo Han
2013-03-23 4:08 ` [PATCH 5/6] ARM: EXYNOS: Enable PCIe support for Exynos5440 Jingoo Han
2013-03-23 4:09 ` [PATCH 6/6] ARM: dts: Add pcie controller node for Samsung EXYNOS5440 SoC Jingoo Han
2013-03-25 17:04 ` Jason Gunthorpe
[not found] ` <20130325170448.GB16690-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2013-03-27 8:35 ` Jingoo Han
2013-03-27 16:13 ` Jason Gunthorpe
2013-04-08 9:08 ` Jingoo Han
2013-04-08 16:56 ` Jason Gunthorpe
2013-06-07 9:19 ` Jingoo Han
2013-06-07 11:59 ` Arnd Bergmann [this message]
2013-06-07 16:20 ` Jason Gunthorpe
2013-06-07 17:43 ` Arnd Bergmann
2013-06-10 8:38 ` Jingoo Han
2013-06-10 15:22 ` Arnd Bergmann
2013-06-11 6:00 ` Jingoo Han
2013-06-12 15:10 ` Arnd Bergmann
2013-03-23 10:41 ` [PATCH 1/6] of/pci: Provide support for parsing PCI DT ranges property Russell King - ARM Linux
2013-03-23 13:37 ` Thomas Petazzoni
2013-03-25 10:21 ` Andrew Murray
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