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Mercier" , Conor Dooley , Simona Vetter , David Airlie , Sumit Semwal , John Stultz , Andrew Morton , David Hildenbrand , dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org, Brian Starkey , linux-mm@kvack.org, Mike Rapoport , Krzysztof Kozlowski , devicetree@vger.kernel.org, Benjamin Gaignard , linaro-mm-sig@lists.linaro.org Subject: Re: [PATCH 1/9] dt-bindings: reserved-memory: Document Tegra VPR Message-ID: <175691792593.2483010.8132765871876943036.robh@kernel.org> References: <20250902154630.4032984-1-thierry.reding@gmail.com> <20250902154630.4032984-2-thierry.reding@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250902154630.4032984-2-thierry.reding@gmail.com> X-Rspamd-Server: rspam03 X-Rspam-User: X-Rspamd-Queue-Id: 583351C0009 X-Stat-Signature: ypzx8m9ya8ij7ih7p4txtrba8gw3d5je X-HE-Tag: 1756917929-165449 X-HE-Meta: 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 DDTf+lyG 1Xk3wUAS3IiUZPgpJq+2xjXDCcZkryi6EYKqJqUgSWZubTVMnokBzTjYnDzNaUCtIE8V+tGZfNTPe5bczs71B5m3w3AchgZ2OPuODPsxOGhuQNoChezLOQ0+TySysnrqQWzbG2MpagW0wY/llHKjfbu95gZ/nZjO06iHh8zw8NzzUWYfSGcpIaAQwZesPXVshYKG+G90x5MzOh90d3dYOwH36gOD6v56Kc031zLmEPdmnw+kmxWFQ5/p9jE64SpBAsm6ohFeDTySW/FhCe1BF9OCyVQfNVZ0q9SmA8iAwHR2u36QN8Ai340j2aGi+I4NxO99k/doqW3AVz5KRDQRPjeCFAiB860Wg4a0h14oeSnhY5F4+Ne8UTZjb0A== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, 02 Sep 2025 17:46:21 +0200, Thierry Reding wrote: > From: Thierry Reding > > 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. > > Signed-off-by: Thierry Reding > --- > .../nvidia,tegra-video-protection-region.yaml | 55 +++++++++++++++++++ > 1 file changed, 55 insertions(+) > create mode 100644 Documentation/devicetree/bindings/reserved-memory/nvidia,tegra-video-protection-region.yaml > Reviewed-by: Rob Herring (Arm)