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| author | Maxime Ripard <maxime@cerno.tech> | 2022-11-17 12:28:51 +0300 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2022-11-24 14:42:39 +0300 |
| commit | e691c9992ae1c731ea67083739823b131c1d88ea (patch) | |
| tree | c063f50d4b20d61092b2fe9f3b078b5d51c10d6e /Documentation/fb | |
| parent | d4613e3e50d34bc30ea384b8bf9560e874451640 (diff) | |
| download | linux-e691c9992ae1c731ea67083739823b131c1d88ea.tar.xz | |
drm/modes: Introduce the tv_mode property as a command-line option
Our new tv mode option allows to specify the TV mode from a property.
However, it can still be useful, for example to avoid any boot time
artifact, to set that property directly from the kernel command line.
Let's add some code to allow it, and some unit tests to exercise that code.
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Tested-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
Acked-in-principle-or-something-like-that-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://lore.kernel.org/r/20220728-rpi-analog-tv-properties-v10-8-256dad125326@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'Documentation/fb')
| -rw-r--r-- | Documentation/fb/modedb.rst | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/fb/modedb.rst b/Documentation/fb/modedb.rst index e53375033146..bebfe61caa77 100644 --- a/Documentation/fb/modedb.rst +++ b/Documentation/fb/modedb.rst @@ -70,6 +70,8 @@ Valid options are:: - reflect_y (boolean): Perform an axial symmetry on the Y axis - rotate (integer): Rotate the initial framebuffer by x degrees. Valid values are 0, 90, 180 and 270. + - tv_mode: Analog TV mode. One of "NTSC", "NTSC-443", "NTSC-J", "PAL", + "PAL-M", "PAL-N", or "SECAM". - panel_orientation, one of "normal", "upside_down", "left_side_up", or "right_side_up". For KMS drivers only, this sets the "panel orientation" property on the kms connector as hint for kms users. |