IoTGateway/BSP/Android/Gettingstarted/How to set Multi-display for rk

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HDMI(4K) and VGA(edp)

 This is the default display mode，To set the display_mode environment variable as the default value

 Power on, stop at the uboot stage： 

rkboot # setenv display_mode
rkboot # saveenv
rkboot # reset

HDMI(4K) and LVDS

 Power on, stop at the uboot stage： 

rkboot # setenv display_mode lvds_800x480
rkboot # saveenv
rkboot # reset

display_mode is optional : lvds_1024x768, dual_lvds_1920x1080

LVDS and VGA(edp)

 Power on, stop at the uboot stage： 

rkboot # setenv display_mode dual_lcd
rkboot # setenv display_mode dual_lcd_screen0 edp_1024x768
rkboot # setenv display_mode dual_lcd_screen1 lvds_800x480
rkboot # saveenv
rkboot # reset

dual_lcd_screen0 and dual_lcd_screen1 is optional and Only when display_mode set to dual_lcd is available

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