linux-kernel - Re: [PATCH 00/29] Exynos SYSMMU (IOMMU) integration with DT and DMA-mapping subsystem

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Date:	Tue, 19 Aug 2014 13:39:10 +0200
From:	Andreas Färber <afaerber@...e.de>
To:	Marek Szyprowski <m.szyprowski@...sung.com>,
	Inki Dae <inki.dae@...sung.com>
CC:	Joerg Roedel <joro@...tes.org>, iommu@...ts.linux-foundation.org,
	linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linaro-mm-sig@...ts.linaro.org, Arnd Bergmann <arnd@...db.de>,
	Shaik Ameer Basha <shaik.ameer@...sung.com>,
	Cho KyongHo <pullip.cho@...sung.com>,
	Thierry Reding <treding@...dia.com>,
	Olof Johansson <olof@...om.net>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Rob Herring <robh@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	Tomasz Figa <tomasz.figa@...il.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Ajay Kumar <ajaykumar.rs@...sung.com>
Subject: Re: [PATCH 00/29] Exynos SYSMMU (IOMMU) integration with DT and DMA-mapping
 subsystem

Hi Marek and Inki,

Am 19.08.2014 08:07, schrieb Marek Szyprowski:
> On 2014-08-19 01:32, Joerg Roedel wrote:
>> On Tue, Aug 05, 2014 at 12:47:28PM +0200, Marek Szyprowski wrote:
[...]
>>>   33 files changed, 1016 insertions(+), 356 deletions(-)
>> This touches a lot of non-iommu stuff. What is your strategy on getting
>> this in, do you plan to get the non-iommu changes merged first or do you
>> want to collect the respective Acks and merge this all through one tree?
> 
> Those patches are posted as one patchset mainly to demonstrate how to get
> everything to work together. I also posted this as a single patch series
> to get some feedback from other iommu developers, especially all those
> involved in the generic iommu dt bindings.
> 
> For merging, I will split them into smaller series and try to get
> respective acks.

I'm working on 5250 based Spring Chromebook and noticed that v3.17-rc1
got some more iommu support. With the new CONFIG_DRM_EXYNOS_IOMMU=y my
machine stops booting. So I'm wondering, is any of this a fix for 3.17,
or is all of this "unrelated" -next material? Also, are you or someone
working on the respective DT changes for Exynos5?

Regards,
Andreas

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