On 02.09.25 17:46, Thierry Reding wrote:
From: Thierry Reding <tred...@nvidia.com>
Hi,
Hi,
This series adds support for the video protection region (VPR) used on
Tegra SoC devices. It's a special region of memory that is protected
from accesses by the CPU and used to store DRM protected content (both
decrypted stream data as well as decoded video frames).
Patches 1 and 2 add DT binding documentation for the VPR and add the VPR
to the list of memory-region items for display and host1x.
Patch 3 introduces new APIs needed by the Tegra VPR implementation that
allow CMA areas to be dynamically created at runtime rather than using
the fixed, system-wide list. This is used in this driver specifically
because it can use an arbitrary number of these areas (though they are
currently limited to 4).
I am pretty sure we want a system-wide list. Currently we maintain all
areas in a static array limited by CONFIG_CMA_AREAS.
We can adjsut that to support for more dynamically.
--
Cheers
David / dhildenb
