1What: /sys/bus/platform/devices/ci_hdrc.0/role 2Date: Mar 2017 3Contact: Peter Chen <peter.chen@nxp.com> 4Description: 5 When read, it returns string "gadget" or "host", indicating 6 the current controller role. 7 8 It will do role switch when "gadget" or "host" is written to it. 9 Only controller at dual-role configuration supports writing. 10