From 58332f89b63de484024deae402feeafefc9a43e1 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Wed, 5 Aug 2015 00:06:47 +0200 Subject: sunxi: display: Add overscan correction Add support for making the visual area of the framebuffer smaller and drawing a black border around it. This is intended for use with overscanning monitors (esp. with composite video out), to avoid part of the picture being invisible. Signed-off-by: Hans de Goede Acked-by: Ian Campbell Acked-by: Anatolij Gustschin --- doc/README.video | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'doc/README.video') diff --git a/doc/README.video b/doc/README.video index 4f7a4b5db5..62ac17b049 100644 --- a/doc/README.video +++ b/doc/README.video @@ -68,6 +68,11 @@ The sunxi u-boot driver supports the following video-mode options: overrides the xres, yres and refresh from the video-mode env. variable. Defaults to edid=1. +- overscan_x/overscan_y= - Set x/y overscan value + This configures a black border on the left and right resp. top and bottom + to deal with overscanning displays. Defaults to overscan_x=32 and + overscan_y=20 for composite monitors, 0 for other monitors. + For example to always use the hdmi connector, even if no cable is inserted, using edid info when available and otherwise initalizing it at 1024x768@60Hz, use: "setenv video-mode sunxi:1024x768-24@60,monitor=dvi,hpd=0,edid=1". -- cgit v1.2.3