Can someone please verify that my understanding is correct? I'm making a dumb device that will charge by plugging into a USB-C port. I only need a max of 500mA at 5V. I believe that the only thing I need to do is put 5.1k pull-downs to both CC pins on my device. The host port will detect the pull-down and turn on default USB 2.0 power levels, which is 500mA @ 5V. Is this correct? And do I need to do anything special to be sure the host port doesn't go to sleep and turn off the power?