VIA Technologies VAB-800, Руководство пользователя

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VAB
VAB VAB
VAB----800 Android BSP 1.
800 Android BSP 1. 800 Android BSP 1.
800 Android BSP 1.3
3 3
3 User Manual
User Manual User Manual
User Manual
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3.3.17. Display
3.3.17.1. 3.3.17.1. 3.3.17.1. 3.3.17.1. Auto Detect Auto Detect Auto Detect Auto Detect
In U-Boot, set:
setenv auto_device ‘setenv bootargs console=ttymxc1,115200 auto-detect ’
setenv set_display 'run auto_device'
saveenv
reset
Then OS will detect the device and light it.
If we connect HDMI or HDMI+VGA, OS will light HDMI with 1920 x 1080. If
VGA was connected, OS will light VGA with 1024 x 768.
3.3.17.2. 3.3.17.2. 3.3.17.2. 3.3.17.2. Dual Dual Dual Dual Display Display Display Display
In U-Boot, set:
setenv dualview 'setenv bootargs ${bootargs} di1_primary
video=mxcdi1fb:GBR24, VGA-XGA vga video=mxcdi0fb:RGB24, 1280x720 M@60 hdmi
pmem=64M,64M fbmem=8M gpu_memory=64M'
setenv set_display 'run dualview'
saveenv
Then OS will light VGA and HDMI.
LVDS2+HDMI
setenv dualview ‘ setenv bootargs ${bootargs} di1_primary
video=mxcdi1fb:RGB24,WVGA ldb=di1 video=mxcdi0fb:RGB24,1280x720M@60
hdmi
’
LVDS1 + LVDS2
setenv dualview ‘ setenv bootargs ${bootargs} video=mxcdi0fb:RGB24,WVGA
di0_primary ldb=separate,di=0,di=1,ch0_map=SPWG,ch1_map=SPWG
video=mxcdi1fb:RGB24,WVGA
’
If you light dual LVDS, the system only light the primary device when booting.
You should key-in the following command through COM port to enable
secondary device after booting.
# setprop rw.SECOND_DISPLAY_CONNECTED 1
VGA+LVDS
Not supported, due to LVDS mode is 800 x 480 and VGA does not include
this mode.
Note: Note: Note: Note:
Known issue of dual display:
-DualView: The resolution of secondary device cannot be more than 720P.
-DualView: Camera will make the screen freeze.