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Trace: » bf609-nl8048

Configure Kernel

* Enable Frame Buffer driver:

Device Drivers  --->
    Graphics support  --->
        <M> Support for frame buffer devices  --->
            <M>   NEC NL8048HL WVGA LCD for BF609

* Enable Backlight driver:

Device Drivers  --->
    Input device support  --->
        [*]   Touchscreens  --->
            <M>   Analog Devices AD7879-1/AD7889-1 touchscreen interface
            <M>     support SPI bus connection

* Enable GPIO support:

Device Drivers  --->
    [*] GPIO Support  --->
        [*]   /sys/class/gpio/... (sysfs interface)

Enable Backlight

1. cd /sys/class/gpio

2. echo 112 > export

3. cd gpio112

4. echo high > direction