DVI display can be enabled in two ways
1. Using bootargs
Eg: omapdss.def_disp="dvi" omapfb.mode=dvi:720x480@60
2. Using SYSFS attributes
echo 0 > /sys/devices/platform/omapdss/display0/enabled
echo "" > /sys/devices/platform/omapdss/manager0/display
fbset -fb /dev/fb0 -xres 720 -yres 480
echo "dvi" > /sys/devices/platform/omapdss/manager0/display
echo 1 > /sys/devices/platform/omapdss/display2/enabled
kill
Restart without enabling rotation: matrix_gui -qws /usr/share/matrix/html/menu_main.html
ref: http://processors.wiki.ti.com/index.php/AM37x_EVM_Software_Developer%27s_Guide
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