This is not directly supported by the display controller hardware.
However, this can be handled efficiently by just passing the chroma
planes to the hardware backwards and reporting it as yuv420.
The format is required by AOSP for software decoded video playback among
other things. An attempt was made to handle this in gralloc by swapping
the chroma planes there, but it wasn't working. This kernel
implementation is working and is more generic anyways. This has been
verified on a SHIELD TV 2019 Pro for the tegradc path and a Jetson TX2
NX for the nvdisplay path.
---
Aaron Kling (2):
drm/tegra: Support swapping chroma planes
drm/tegra: Support YVU420
drivers/gpu/drm/tegra/dc.c | 19 ++++++++++++++-----
drivers/gpu/drm/tegra/hub.c | 15 ++++++++++-----
drivers/gpu/drm/tegra/plane.c | 12 +++++++++++-
drivers/gpu/drm/tegra/plane.h | 3 ++-
4 files changed, 37 insertions(+), 12 deletions(-)
---
base-commit: aac26bee2287c88af5be5a5ff96d783b19a28790
change-id: 20261008-tegra-drm-yvu420-1dbb7140e54a
Best regards,
--
Aaron Kling <[email protected]>
