Adeneo Embedded i.MX53 Kullanıcı Kılavuzu - Sayfa 14

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● This will save the environment variables to the SD card. Restart the board and Android

will load.

● Note: The backlight settings have been adjusted to support the SEIKO 4.3" LCD screen.

They might not be suitable for the 7" screen. If you want to use the 7" display:

○ Edit and find the following structure:

static struct platform_pwm_backlight_data mxc_pwm_backlight_data = {

.pwm_id = 1,

.max_brightness = 255,

.dft_brightness = 128,

/* NOTE - ADENEO: this value is suitable for the SEIKO LCD.

It needs to be adapted for different panels */

.pwm_period_ns = 5000000,

};

○ Set the PWM period: .pwm_period_ns = 50000,

○ Rebuild and flash the kernel.

VGA

● Use the following commands in U-Boot:

U-Boot> setenv set_display run vga

U-Boot> save

● This will save the environment variables to the SD card. Restart the board and Android

will load.

Note: If you need to customize the mode, you will need to edit the "vga" environment variable

and replace "video=mxcdi1fb:GBR24,VGA-XGA" with the desired mode, e.g.

U-Boot> setenv vga 'setenv bootargs ${bootargs} di1_primary

video=mxcdi1fb:GBR24,1680x1050@60 vga'

The following modes are supported:

○ 1680x1050@60

○ 1280x1024@60

○ 1024x768@60

○ 800x600p@60

HDMI

01/29/2012

Adeneo i.MX53 QSB BSP for Android Gingerbread 4.2

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