Thread (26 messages) flat view 26 messages, 3 authors, 22h ago
HOTtoday REVIEWED: 6 (6M)

1 review trailer (1 from subsystem maintainers).

[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
Also in: dri-devel, linux-devicetree, linux-iommu, linux-media, linux-mm, linux-s390, linux-tegra, lkml
Subsystem: drm drivers, drm drivers and misc gpu patches, drm drivers for nvidia tegra, open firmware and flattened device tree bindings, the rest · Maintainers: David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Thierry Reding, Mikko Perttunen, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds

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
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