forked from Minki/linux
a932a8041f
Sometimes, the user needs to adjust some properties for controllers, eg the role for controller, we add sysfs group for them. The attribute 'role' is used to switch host/gadget role dynamically, the uewr can read the current role, and write the other role compare to current one to finish the switch. Signed-off-by: Peter Chen <peter.chen@nxp.com>
10 lines
337 B
Plaintext
10 lines
337 B
Plaintext
What: /sys/bus/platform/devices/ci_hdrc.0/role
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Date: Mar 2017
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Contact: Peter Chen <peter.chen@nxp.com>
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Description:
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It returns string "gadget" or "host" when read it, it indicates
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current controller role.
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It will do role switch when write "gadget" or "host" to it.
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Only controller at dual-role configuration supports writing.
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