on boot

    # Set OpenGLES version
    setprop ro.opengles.version 131072

    # Set GPU 3D minimum clock to 8/64
    write /sys/bus/platform/drivers/galcore/gpu3DMinClock 8

    # set back camera.
    setprop back_camera_name ov5640_mipi,uvc

    # set front camera.
    setprop front_camera_name uvc,ov5642_camera,ov5640_camera,ov5640_mipi