| What: /sys/bus/platform/devices/ci_hdrc.0/role | |
| Date: Mar 2017 | |
| Contact: Peter Chen <peter.chen@nxp.com> | |
| Description: | |
| It returns string "gadget" or "host" when read it, it indicates | |
| current controller role. | |
| It will do role switch when write "gadget" or "host" to it. | |
| Only controller at dual-role configuration supports writing. |