[PATCH v2 2/5] dt-bindings: gk20a: Document iommus property

Alexandre Courbot
2016-03-15T02:58:41Z

GK20A can optionally make use of an IOMMU.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---
Documentation/devicetree/bindings/gpu/nvidia,gk20a.txt | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/gpu/nvidia,gk20a.txt b/Documentation/devicetree/bindings/gpu/nvidia,gk20a.txt
index 914f0ff4020e..1e3748337319 100644
--- a/Documentation/devicetree/bindings/gpu/nvidia,gk20a.txt
+++ b/Documentation/devicetree/bindings/gpu/nvidia,gk20a.txt
@@ -24,6 +24,9 @@ Required properties:
- reset-names: Must include the following entries:
- gpu

+Optional properties:
+- iommus: A reference to the IOMMU. See ../iommu/iommu.txt for details.
+
Example:

gpu@0,57000000 {
@@ -39,5 +42,6 @@ Example:
clock-names = "gpu", "pwr";
resets = <&tegra_car 184>;
reset-names = "gpu";
+ iommus = <&mc TEGRA_SWGROUP_GPU>;
status = "disabled";
};
--
2.7.2