1. 32e781f usb: ulpi: kconfig: Remove meaningless choice default by Ulf Magnusson · Tue Jan 30 14:07:05 2018 +0100
  2. ed9cf1f usb: ulpi: Add Kconfig options for ULPI by Mateusz Kulikowski · Thu Mar 31 23:12:18 2016 +0200