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sunxi: video: Fallback from HDMI to VGA on boards with VGA

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If a board has no LCD, but does have VGA fallback to VGA when no HDMI cable
is connected (unless hpd=0).

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
This commit is contained in:
Hans de Goede
2014-12-25 13:52:04 +01:00
parent 3ffbe477da
commit 49d2703dd8
2 changed files with 31 additions and 25 deletions
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doc/README.video
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@@ -50,8 +50,7 @@ The sunxi u-boot driver supports the following video-mode options:
- 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.
- edid=[0|1] - Enable use of DDC + EDID to get monitor info