diff options
Diffstat (limited to 'Documentation/userspace-api')
| -rw-r--r-- | Documentation/userspace-api/media/v4l/pixfmt-reserved.rst | 15 | ||||
| -rw-r--r-- | Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst | 6 |
2 files changed, 10 insertions, 11 deletions
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst index 2f2133b4cd9c..cabfa34b7db5 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst @@ -233,19 +233,12 @@ please make a proposal on the linux-media mailing list. - ``V4L2_PIX_FMT_MT21C`` - 'MT21' - - Compressed two-planar YVU420 format used by Mediatek MT8173. - The compression is lossless. - It is an opaque intermediate format and the MDP hardware must be + - Compressed two-planar YVU420 format used by Mediatek MT8173, MT8192, + MT8195 and more. The compression is lossless. This format have + similitude with ``V4L2_PIX_FMT_MM21`` in term of alignment and tiling. + It remains an opaque intermediate format and the MDP hardware must be used to convert ``V4L2_PIX_FMT_MT21C`` to ``V4L2_PIX_FMT_NV12M``, ``V4L2_PIX_FMT_YUV420M`` or ``V4L2_PIX_FMT_YVU420``. - * .. _V4L2-PIX-FMT-MM21: - - - ``V4L2_PIX_FMT_MM21`` - - 'MM21' - - Non-compressed, tiled two-planar format used by Mediatek MT8183. - This is an opaque intermediate format and the MDP3 hardware can be - used to convert it to other formats. - .. raw:: latex \normalsize diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst index 3a09d93d405b..570791fbc5c8 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst @@ -296,6 +296,12 @@ tiles linearly in memory. The line stride and image height must be aligned to a multiple of 32. The layouts of the luma and chroma planes are identical. +``V4L2_PIX_FMT_MM21`` store luma pixel in 16x32 tiles, and chroma pixels +in 16x16 tiles. The line stride must be aligned to a multiple of 16 and the +image height must be aligned to a multiple of 32. The number of luma and chroma +tiles are identical, even though the tile size differ. The image is formed of +two non-contiguous planes. + .. _nv12mt: .. kernel-figure:: nv12mt.svg |