On Wed, Jul 30, 2014 at 02:23:50PM +0100, Thierry Reding wrote:

On Wed, Jul 30, 2014 at 12:04:25PM +0100, Will Deacon wrote:

quoted

On Fri, Jul 04, 2014 at 04:29:17PM +0100, Thierry Reding wrote:

quoted

From: Thierry Reding <redacted>

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 SMMU as
discussed here:

    https://lkml.org/lkml/2014/4/27/346

Signed-off-by: Thierry Reding <redacted>
---
Changes in v4:
- clarify that disabling an IOMMU DT node may not disable translation
- be more explicit that examples are only examples
- add multi-ID master example

Changes in v3:
- use #iommu-cells instead of #address-cells/#size-cells
- drop optional iommu-names property

Changes in v2:
- add notes about "dma-ranges" property (drop note from commit message)
- document priorities of "iommus" property vs. "dma-ranges" property
- drop #iommu-cells in favour of #address-cells and #size-cells
- remove multiple-master device example

 Documentation/devicetree/bindings/iommu/iommu.txt | 172 ++++++++++++++++++++++
 1 file changed, 172 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iommu/iommu.txt

I'm concerned that this patch hasn't been picked up for 3.17 (I can't see it
in -next). If we want to move the ARM SMMU driver over to this new binding,
we can't keep dragging our feet for much longer as I *really* don't plan to
support two bindings in parallel (one is complicated enough already).

Any chance we can see this merged, please?

I think there weren't any comments left for me to address and I've
mostly been waiting for Joerg to pick it up.

Joerg, can you take this through the iommu tree for 3.17? Will acked
this, but perhaps you were waiting for an ACK from the device tree
bindings maintainers?

Rob, Mark: can one or both of you take a look at this please?

Cheers,

Will