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drm/modes: Parse overscan properties

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Properly configuring the overscan properties might be needed for the
initial setup of the framebuffer for display that still have overscan.
Let's allow for more properties on the kernel command line to setup each
margin.

Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/e481f1628e3768ca49226ec2115cfa4dfcbd5e4c.1560783090.git-series.maxime.ripard@bootlin.com
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Maxime Ripard
2019-06-19 12:17:51 +02:00
parent 22045e8e52
commit 3d46a3007c
3 changed files with 51 additions and 0 deletions
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Documentation/fb/modedb.txt
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@@ -57,6 +57,8 @@ Options can also be passed after the mode, using commas as separator.
Valid options are:
- margin_top, margin_bottom, margin_left, margin_right (integer):
Number of pixels in the margins, typically to deal with overscan on TVs
- reflect_x (boolean): Perform an axial symmetry on the X axis
- reflect_y (boolean): Perform an axial symmetry on the Y axis
- rotate (integer): Rotate the initial framebuffer by x