On Wed, 01 Jul 2026 18:08:12 +0200, Thierry Reding wrote:
From: Thierry Reding treding@nvidia.com
The Video Protection Region (VPR) found on NVIDIA Tegra chips is a region of memory that is protected from CPU accesses. It is used to decode and play back DRM protected content.
It is a standard reserved memory region that can exist in two forms: static VPR where the base address and size are fixed (uses the "reg" property to describe the memory) and a resizable VPR where only the size is known upfront and the OS can allocate it wherever it can be accomodated.
Reviewed-by: Rob Herring (Arm) robh@kernel.org Signed-off-by: Thierry Reding treding@nvidia.com
Changes in v2:
- add examples for fixed and resizable VPR
.../nvidia,tegra-video-protection-region.yaml | 76 ++++++++++++++++++++++ 1 file changed, 76 insertions(+)
My bot found errors running 'make dt_binding_check' on your patch:
yamllint warnings/errors:
dtschema/dtc warnings/errors: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/reserved-memory/nvidia,tegra-video-protection-region.example.dtb: protected@2a8000000 (nvidia,tegra-video-protection-region): reg: [[2, 2818572288], [0, 1879048192]] is too long from schema $id: http://devicetree.org/schemas/reserved-memory/nvidia,tegra-video-protection-... /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/reserved-memory/nvidia,tegra-video-protection-region.example.dtb: protected@2a8000000 (nvidia,tegra-video-protection-region): Unevaluated properties are not allowed ('no-map', 'reg' were unexpected) from schema $id: http://devicetree.org/schemas/reserved-memory/nvidia,tegra-video-protection-...
doc reference errors (make refcheckdocs):
See https://patchwork.kernel.org/project/devicetree/patch/20260701-tegra-vpr-v3-...
The base for the series is generally the latest rc1. A different dependency should be noted in *this* patch.
If you already ran 'make dt_binding_check' and didn't see the above error(s), then make sure 'yamllint' is installed and dt-schema is up to date:
pip3 install dtschema --upgrade
Please check and re-submit after running the above command yourself. Note that DT_SCHEMA_FILES can be set to your schema file to speed up checking your schema. However, it must be unset to test all examples with your schema.