Merge tag 'drm-next-2019-07-16' of git://anongit.freedesktop.org/drm/drm

[linux-2.6-microblaze.git] / Documentation / fb / modedb.rst

diff --git a/Documentation/fb/modedb.rst b/Documentation/fb/modedb.rst
index 3c23972..9c4e3fd 100644 (file)
--- a/Documentation/fb/modedb.rst
+++ b/Documentation/fb/modedb.rst
@@ -53,6 +53,20 @@ Specifying the option multiple times for different ports is possible, e.g.::
 
     video=LVDS-1:d video=HDMI-1:D
 
+Options can also be passed after the mode, using commas as separator.
+
+       Sample usage: 720x480,rotate=180 - 720x480 mode, rotated by 180 degrees
+
+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
+    degrees. Valid values are 0, 90, 180 and 270.
+
+
 -----------------------------------------------------------------------------
 
 What is the VESA(TM) Coordinated Video Timings (CVT)?