first_usb_dev_port = None
@pytest.mark.buildconfigspec('cmd_dfu')
+@pytest.mark.requiredtool('dfu-util')
def test_dfu(u_boot_console, env__usb_dev_port, env__dfu_config):
"""Test the "dfu" command; the host system must be able to enumerate a USB
device when "dfu" is running, various DFU transfers are tested, and the