X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=doc%2FREADME.video;h=62ac17b0490f96cbbc07665eb6411dfa039aa332;hb=0e6985443278fc193c90fc2daeeefce853012d54;hp=cfe6318e127ba8f6b6b830b17add92736b8b5481;hpb=2dae800f1e6193b64ba587f511c4878c89409cbe;p=karo-tx-uboot.git

diff --git a/doc/README.video b/doc/README.video
index cfe6318e12..62ac17b049 100644
--- a/doc/README.video
+++ b/doc/README.video
@@ -40,26 +40,39 @@ requires the CONFIG_VIDEO_LCD_MODE Kconfig value to be set.
 
 The sunxi u-boot driver supports the following video-mode options:
 
-- monitor=[none|dvi|hdmi|lcd] - Select the video output to use
+- monitor=[none|dvi|hdmi|lcd|vga|composite-*] - Select the video output to use
  none:     Disable video output.
  dvi/hdmi: Selects output over the hdmi connector with dvi resp. hdmi output
            format, if edid is used the format is automatically selected.
  lcd:      Selects video output to a LCD screen.
- vga:      Selects bideo output over the VGA connector.
+ vga:      Selects video output over the VGA connector.
+ composite-pal/composite-ntsc/composite-pal-m/composite-pal-nc:
+           Selects composite video output, note the specified resolution is
+           ignored with composite video output.
  Defaults to monitor=dvi.
 
 - hpd=[0|1] - Enable use of the hdmi HotPlug Detect feature
  0: Disabled. Configure dvi/hdmi output even if no cable is detected
- 1: Enabled. If a LCD has been configured fallback to the LCD when no cable is
-    detected, if no LCD is configured, disable video ouput.
+ 1: Enabled.  Fallback to the lcd / vga / none in that order (if available)
  Defaults to hpd=1.
 
+- hpd_delay=<int> - How long to wait for the hdmi HPD signal in milliseconds
+ When the monitor and the board power up at the same time, it may take some
+ time for the monitor to assert the HPD signal. This configures how long to
+ wait for the HPD signal before assuming no cable is connected.
+ Defaults to hpd_delay=500.
+
 - edid=[0|1] - Enable use of DDC + EDID to get monitor info
  0: Disabled.
  1: Enabled. If valid EDID info was read from the monitor the EDID info will
     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: video-mode=sunxi:1024x768-24@60,monitor=dvi,hpd=0,edid=1 .
+use: "setenv video-mode sunxi:1024x768-24@60,monitor=dvi,hpd=0,edid=1".