linux-kernel - Re: [PATCH V10 0/4] PCIe support for Samsung Exynos5440 SoC

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Date:	Fri, 21 Jun 2013 09:47:23 +0200
From:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Jingoo Han <jg1.han@...sung.com>,
	"'Kukjin Kim'" <kgene.kim@...sung.com>,
	"'Bjorn Helgaas'" <bhelgaas@...gle.com>,
	linux-samsung-soc@...r.kernel.org, linux-pci@...r.kernel.org,
	devicetree-discuss@...ts.ozlabs.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	"'Grant Likely'" <grant.likely@...retlab.ca>,
	"'Andrew Murray'" <andrew.murray@....com>,
	"'Thierry Reding'" <thierry.reding@...onic-design.de>,
	"'Jason Gunthorpe'" <jgunthorpe@...idianresearch.com>,
	"'Surendranath Gurivireddy Balla'" <suren.reddy@...sung.com>,
	"'Siva Reddy Kallam'" <siva.kallam@...sung.com>,
	"'Thomas Abraham'" <thomas.abraham@...aro.org>,
	"'Tomasz Figa'" <t.figa@...sung.com>,
	"'Pratyush Anand'" <pratyush.anand@...com>,
	"'Mohit KUMAR'" <Mohit.KUMAR@...com>,
	Jason Cooper <jason@...edaemon.net>
Subject: Re: [PATCH V10 0/4] PCIe support for Samsung Exynos5440 SoC

Dear Arnd Bergmann,

On Fri, 21 Jun 2013 09:31:58 +0200, Arnd Bergmann wrote:

> Bjorn, are you still considering to merge this for 3.11 or have you
> closed your tree for the merge window? I think it would be good to get
> it in.

Note that the of/pci changes needed for this driver are merged through
the arm-soc tree, with the of maintainers ACKs. They are already in
arm-soc for-next, through Jason Cooper's tree.

4e23d3f505e8acfeac7cc33d4113fbb5a25c3090 of/pci: Add of_pci_parse_bus_range() function
45ab9702fb47d18dca116b3a0509efa19fbcb27a of/pci: Add of_pci_get_devfn() function
29b635c00f3ebcdaf7a52c4948f6d948ad3757d3 of/pci: Provide support for parsing PCI DT ranges property

Also, it depends on the Marvell PCIe driver (but to a lesser extent),
which is the one that creates the drivers/pci/host/Kconfig and
drivers/pci/host/Makefile.

45361a4fe4464180815157654aabbd2afb4848ad pci: PCIe driver for Marvell Armada 370/XP systems

I am by far not an expert on how to solve merge strategies and so on,
but to avoid conflicts at Linus's level while merging the arm-soc and
pci trees, it would be better if this Samsung PCIe driver could go
through arm-soc (with Bjorn ACK, of course), so that Arnd/Olof can
make sure the ordering is correct with regard to the of/pci changes and
the mvebu/pci driver.

I'll let you discuss that with Jason Cooper.

Best regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
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