i.mx6dl boot[1:0]配置为01，无法识别USB设备

[zhuxiangxiang72]

i.mx6dl 将boot mode[1:0] 配置为01(serial download)，无法识别USB设备，将其配置为00（从eFuse启动），能够识别USB设备，而且可以将程序调入DDR中运行，并且可以将uboot烧录到SPI Flash中，这样是正常情况么？

[jimmychan]

When boot mode is 01, it should be serial download mode. Please check the schematic. It is better to compare with the SabreSD board.

When boot mode is 00,  it is boot from fuses. As you don't program the fuses BT_FUSE_SEL, boot flow will jump to serial download mode.