Re: [PATCH v2] devicetree: Add generic IOMMU device tree bindings

2014-06-02 Thread Dave Martin
On Fri, May 30, 2014 at 09:01:19PM +0200, Arnd Bergmann wrote: > On Friday 30 May 2014 12:22:32 Dave Martin wrote: > > > + > > > +Examples: > > > += > > > + > > > +Single-master IOMMU: > > > + &g

Re: [PATCH v2] devicetree: Add generic IOMMU device tree bindings

2014-06-02 Thread Dave Martin
On Fri, May 30, 2014 at 09:11:07PM +0200, Arnd Bergmann wrote: > On Friday 30 May 2014 12:27:28 Dave Martin wrote: > > On Fri, May 30, 2014 at 08:30:08AM +0100, Thierry Reding wrote: > > > On Thu, May 29, 2014 at 09:52:22AM -0600, Stephen Warren wrote: > > > > O

Re: [PATCH v2] devicetree: Add generic IOMMU device tree bindings

2014-06-02 Thread Dave Martin
On Fri, May 30, 2014 at 09:49:59PM +0200, Arnd Bergmann wrote: > On Friday 30 May 2014 14:31:55 Rob Herring wrote: > > On Fri, May 30, 2014 at 2:06 PM, Arnd Bergmann wrote: > > > On Friday 30 May 2014 08:16:05 Rob Herring wrote: > > >> On Fri, May 23, 2014 at 3:33 PM, Thierry Reding > > >> wrote:

Re: [PATCH v2] devicetree: Add generic IOMMU device tree bindings

2014-05-30 Thread Dave Martin
On Fri, May 30, 2014 at 08:30:08AM +0100, Thierry Reding wrote: > On Thu, May 29, 2014 at 09:52:22AM -0600, Stephen Warren wrote: > > On 05/23/2014 02:36 PM, Thierry Reding wrote: > > > From: Thierry Reding > > > > > > This commit introduces a generic device tree binding for IOMMU devices. > > >

Re: [PATCH v2] devicetree: Add generic IOMMU device tree bindings

2014-05-30 Thread Dave Martin
On Fri, May 23, 2014 at 10:36:35PM +0200, Thierry Reding wrote: > From: Thierry Reding > > This commit introduces a generic device tree binding for IOMMU devices. > Only a very minimal subset is described here, but it is enough to cover > the requirements of both the Exynos System MMU and Tegra S

Re: [PATCH] devicetree: Add generic IOMMU device tree bindings

2014-05-21 Thread Dave Martin
n Tuesday 20 May 2014 16:24:59 Dave Martin wrote: > > > > > On Tue, May 20, 2014 at 02:41:18PM +0200, Arnd Bergmann wrote: > > > > > > On Tuesday 20 May 2014 14:02:43 Thierry Reding wrote: > > > [...] > > > > > > > Mul

Re: [PATCH] devicetree: Add generic IOMMU device tree bindings

2014-05-20 Thread Dave Martin
On Tue, May 20, 2014 at 04:26:59PM +0100, Will Deacon wrote: > On Tue, May 20, 2014 at 02:23:47PM +0100, Arnd Bergmann wrote: > > Bit# 3322 1100 > >10987654 32109876 54321098 76543210 > > phys.hi cell: npt000ss dfff > > phys.mid cel

Re: [PATCH] devicetree: Add generic IOMMU device tree bindings

2014-05-20 Thread Dave Martin
On Tue, May 20, 2014 at 02:41:18PM +0200, Arnd Bergmann wrote: > On Tuesday 20 May 2014 14:02:43 Thierry Reding wrote: > > On Tue, May 20, 2014 at 01:15:48PM +0200, Arnd Bergmann wrote: > > > On Tuesday 20 May 2014 13:05:37 Thierry Reding wrote: > > > > On Tue, May 20, 2014 at 12:04:54PM +0200, Arn

Re: [PATCH] devicetree: Add generic IOMMU device tree bindings

2014-05-20 Thread Dave Martin
On Tue, May 20, 2014 at 12:08:44PM +0200, Arnd Bergmann wrote: > On Monday 19 May 2014 22:32:33 Thierry Reding wrote: > > On Mon, May 19, 2014 at 06:22:31PM +0100, Dave Martin wrote: > > > On Mon, May 19, 2014 at 01:53:37PM +0100, Thierry Reding wrote: > > [...] > >

Re: [PATCH] devicetree: Add generic IOMMU device tree bindings

2014-05-19 Thread Dave Martin
On Mon, May 19, 2014 at 01:53:37PM +0100, Thierry Reding wrote: > On Mon, May 19, 2014 at 12:26:35PM +0200, Arnd Bergmann wrote: > > On Friday 16 May 2014 14:23:18 Thierry Reding wrote: > > > From: Thierry Reding > > > > > > This commit introduces a generic device tree binding for IOMMU devices.

Re: [PATCH v12 11/31] documentation: iommu: add binding document of Exynos System MMU

2014-05-02 Thread Dave Martin
On Thu, May 01, 2014 at 06:41:37PM +0100, Stephen Warren wrote: > On 04/29/2014 03:00 PM, Arnd Bergmann wrote: > ... > > Yes. It's very complicated unfortunately, because we have to be > > able to deal with arbitrary combinations of a lot of oddball cases > > that can show up in random SoCs: > ...

Re: [PATCH v12 11/31] documentation: iommu: add binding document of Exynos System MMU

2014-05-01 Thread Dave Martin
On Thu, May 01, 2014 at 11:02:14PM +0900, Cho KyongHo wrote: > On Tue, 29 Apr 2014 23:00:29 +0200, Arnd Bergmann wrote: > > On Tuesday 29 April 2014 13:07:54 Grant Grundler wrote: > > > On Tue, Apr 29, 2014 at 11:16 AM, Dave Martin wrote: > > > ... > > > >

Re: [PATCH v12 11/31] documentation: iommu: add binding document of Exynos System MMU

2014-05-01 Thread Dave Martin
On Thu, May 01, 2014 at 02:29:50PM +0100, Arnd Bergmann wrote: > On Thursday 01 May 2014 12:15:35 Dave Martin wrote: > > On Tue, Apr 29, 2014 at 10:46:18PM +0200, Arnd Bergmann wrote: > > > On Tuesday 29 April 2014 19:16:02 Dave Martin wrote: > > > > [...] >

Re: [PATCH v12 11/31] documentation: iommu: add binding document of Exynos System MMU

2014-05-01 Thread Dave Martin
On Tue, Apr 29, 2014 at 10:46:18PM +0200, Arnd Bergmann wrote: > On Tuesday 29 April 2014 19:16:02 Dave Martin wrote: [...] > > For example, suppose devices can post MSIs to an interrupt controller > > via a mailbox accessed through the IOMMU. Suppose also that the IOMMU >

Re: [PATCH v12 11/31] documentation: iommu: add binding document of Exynos System MMU

2014-04-30 Thread Dave Martin
On Tue, Apr 29, 2014 at 11:00:29PM +0200, Arnd Bergmann wrote: > On Tuesday 29 April 2014 13:07:54 Grant Grundler wrote: > > On Tue, Apr 29, 2014 at 11:16 AM, Dave Martin wrote: > > ... > > > An IOMMU is really a specialised bridge > > > > Is a GART a bridg

Re: [PATCH v12 11/31] documentation: iommu: add binding document of Exynos System MMU

2014-04-30 Thread Dave Martin
On Mon, Apr 28, 2014 at 09:55:00PM +0200, Arnd Bergmann wrote: > On Monday 28 April 2014 20:30:56 Will Deacon wrote: > > Hi Arnd, > > > > [and thanks Thierry for CCing me -- I have been tangled up with this before > > :)] > > > > On Mon, Apr 28, 2014 at 01:05:30PM +0100, Arnd Bergmann wrote: > >