# \[PATCH v6 03/12\] dt-bindings: gpu: host1x: Document memory-regions for NVDEC

- From: Thierry Reding \<thierry.reding@kernel.org\>
- Date: 2026-09-04 10:45:29 
- List: linux-devicetree
- Page: https://ratatoskr.run/linux-devicetree/2026/09/17512972
- Thread: https://ratatoskr.run/linux-devicetree/2026/09/17512969/t.md

```text
From: Thierry Reding <redacted>

The video protection region is a reserved memory region that can be used
for secure video playback. NVDEC can access this region to decode images
into securely.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Thierry Reding <redacted>
---
 .../devicetree/bindings/gpu/host1x/nvidia,tegra234-nvdec.yaml     | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/gpu/host1x/nvidia,tegra234-nvdec.yaml b/Documentation/devicetree/bindings/gpu/host1x/nvidia,tegra234-nvdec.yaml
index 4eb325cfd296..bcaaabca945d 100644
--- a/Documentation/devicetree/bindings/gpu/host1x/nvidia,tegra234-nvdec.yaml
+++ b/Documentation/devicetree/bindings/gpu/host1x/nvidia,tegra234-nvdec.yaml
@@ -60,6 +60,14 @@ properties:
       - const: dma-mem
       - const: write
 
+  memory-region:
+    items:
+      - description: reference to the video protection memory region
+
+  memory-region-names:
+    items:
+      - const: protected
+
   nvidia,memory-controller:
     $ref: /schemas/types.yaml#/definitions/phandle
     description:

-- 
2.55.0

```