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Diffstat (limited to 'Documentation/ABI/testing/sysfs-platform-chipidea-usb2')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-platform-chipidea-usb2 | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-platform-chipidea-usb2 b/Documentation/ABI/testing/sysfs-platform-chipidea-usb2 new file mode 100644 index 000000000..b9f7d924f --- /dev/null +++ b/Documentation/ABI/testing/sysfs-platform-chipidea-usb2 @@ -0,0 +1,9 @@ +What: /sys/bus/platform/devices/ci_hdrc.0/role +Date: Mar 2017 +Contact: Peter Chen <peter.chen@nxp.com> +Description: + When read, it returns string "gadget" or "host", indicating + the current controller role. + + It will do role switch when "gadget" or "host" is written to it. + Only controller at dual-role configuration supports writing. |