Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit f99858e0 authored by Li Jun's avatar Li Jun Committed by Greg Kroah-Hartman
Browse files

Documentation: ABI: usb: sysfs Description for chipidea USB OTG HNP and SRP 



This patch adds sysfs interface description for chipidea USB OTG HNP and SRP.

Signed-off-by: default avatarPeter Chen <peter.chen@freescale.com>
Signed-off-by: default avatarLi Jun <b47624@freescale.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 88bdffc8

Documentation/ABI/testing/sysfs-platform-chipidea-usb-otg

0 → 100644
+56 −0
Original line number Diff line number Diff line 
What:		/sys/bus/platform/devices/ci_hdrc.0/inputs/a_bus_req

Date:		Feb 2014

Contact:	Li Jun <b47624@freescale.com>

Description:

		Can be set and read.

		Set a_bus_req(A-device bus request) input to be 1 if

		the application running on the A-device wants to use the bus,

		and to be 0 when the application no longer wants to use

		the bus(or wants to work as peripheral). a_bus_req can also

		be set to 1 by kernel in response to remote wakeup signaling

		from the B-device, the A-device should decide to resume the bus.



		Valid values are "1" and "0".



		Reading: returns 1 if the application running on the A-device

		is using the bus as host role, otherwise 0.



What:		/sys/bus/platform/devices/ci_hdrc.0/inputs/a_bus_drop

Date:		Feb 2014

Contact:	Li Jun <b47624@freescale.com>

Description:

		Can be set and read

		The a_bus_drop(A-device bus drop) input is 1 when the

		application running on the A-device wants to power down

		the bus, and is 0 otherwise, When a_bus_drop is 1, then

		the a_bus_req shall be 0.



		Valid values are "1" and "0".



		Reading: returns 1 if the bus is off(vbus is turned off) by

			 A-device, otherwise 0.



What:		/sys/bus/platform/devices/ci_hdrc.0/inputs/b_bus_req

Date:		Feb 2014

Contact:	Li Jun <b47624@freescale.com>

Description:

		Can be set and read.

		The b_bus_req(B-device bus request) input is 1 during the time

		that the application running on the B-device wants to use the

		bus as host, and is 0 when the application no longer wants to

		work as host and decides to switch back to be peripheral.



		Valid values are "1" and "0".



		Reading: returns if the application running on the B device

		is using the bus as host role, otherwise 0.



What:		/sys/bus/platform/devices/ci_hdrc.0/inputs/a_clr_err

Date:		Feb 2014

Contact:	Li Jun <b47624@freescale.com>

Description:

		Only can be set.

		The a_clr_err(A-device Vbus error clear) input is used to clear

		vbus error, then A-device will power down the bus.



		Valid value is "1"