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| author | Hans de Goede <hdegoede@redhat.com> | 2015-08-05 00:06:47 +0200 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2015-08-14 08:37:36 +0200 |
| commit | 58332f89b63de484024deae402feeafefc9a43e1 (patch) | |
| tree | d9a8c8844341f46a08bde07bab2cff49740f7b07 /doc/README.video | |
| parent | c67a8767f57989704304d64d9e9006007e2ff083 (diff) | |
| download | u-boot-58332f89b63de484024deae402feeafefc9a43e1.tar.gz u-boot-58332f89b63de484024deae402feeafefc9a43e1.tar.bz2 u-boot-58332f89b63de484024deae402feeafefc9a43e1.zip | |
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 <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Acked-by: Anatolij Gustschin <agust@denx.de>
Diffstat (limited to 'doc/README.video')
| -rw-r--r-- | doc/README.video | 5 |
1 files changed, 5 insertions, 0 deletions
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=<int> - 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". |