1 files changed, 4 insertions, 0 deletions

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";
         };