Kontron KTAM3874-pITX - Manual (Page 8)

KTD-S0057-I Page 4 U-Boot Setup
KTAM3874/pITX Software Guide
2.3 Display Menu
This menu part includes several display settings:
First boot display
Second boot display
Boot display mirror mode
LCD panel resolution
LCD panel mapping
Backlight output control
Backlight enable level
Backlight brightness
2.3.1 Boot Display
The TI ® AM3874 implies a graphics subsystem with two independent HD display controllers. Without a
restriction (except duplicate usage but 'none' on both settings is possible) each controller interface can be
configured as:
none switch off the display controller
lcd
hdmi
Examples:
First boot display hdmi
Second boot display none
or
First boot display none
Second boot display lcd
or
First boot display hdmi
Second boot display lcd
or
First boot display lcd
Second boot display hdmi
2.3.2 Mirror Mode
This feature is only meaningful if both boot displays are active. In enabled state always the first boot
display determines the real resolution. In this case it would be advisable to use the LCD panel (setting
'lcd') as first boot display. If mirror mode is disabled the second boot display remains black but it can be
used with custom programs.