Sonic Alert 2.8 user manual Revision

7.1 Display configuration		38
name	: crt1024x768
pixclock	: 65000000
xres	: 1024
yres	: 768
act_high	: 1
hsync_len	: 200
left_margin	: 24
right_margin	: 161
vsync_len	: 6
upper_margin	: 3
lower_margin	: 29
active	: 0
$

7.1.3Select a supported display

If you supply a supported panel name on the lcdp command line, the display controller will be reset with the associated parameters.

$lcdp hitachi_wvga found panel hitachi_wvga panel: 800x480x8

$lcdp

------------------------------------

name	: hitachi_wvga
pixclock	: 1
xres	: 800
yres	: 480
act_high	: 1
hsync_len	: 64
left_margin	: 1
right_margin	: 39
vsync_len	: 20
upper_margin	: 8
lower_margin	: 3
active	: 1

The selection takes place immediately, so if you have a panel connected, you should see valid output on the display.

Note that if you change resolutions, the display memory will likely have mis-aligned data in it. Displaying a bitmap on the display through the use of the fatload and bmp commands will remedy this situation. Refer to init.script for an example.

If you want to make your selection stick through a reset, you can save it through the set and save U-Boot commands.

December 28, 2005 Revision 2.8