0001 What: /sys/bus/platform/devices/ci_hdrc.0/inputs/a_bus_req
0002 Date: Feb 2014
0003 Contact: Li Jun <jun.li@nxp.com>
0004 Description:
0005 Can be set and read.
0006 Set a_bus_req(A-device bus request) input to be 1 if
0007 the application running on the A-device wants to use the bus,
0008 and to be 0 when the application no longer wants to use
0009 the bus(or wants to work as peripheral). a_bus_req can also
0010 be set to 1 by kernel in response to remote wakeup signaling
0011 from the B-device, the A-device should decide to resume the bus.
0012
0013 Valid values are "1" and "0".
0014
0015 Reading: returns 1 if the application running on the A-device
0016 is using the bus as host role, otherwise 0.
0017
0018 What: /sys/bus/platform/devices/ci_hdrc.0/inputs/a_bus_drop
0019 Date: Feb 2014
0020 Contact: Li Jun <jun.li@nxp.com>
0021 Description:
0022 Can be set and read
0023 The a_bus_drop(A-device bus drop) input is 1 when the
0024 application running on the A-device wants to power down
0025 the bus, and is 0 otherwise, When a_bus_drop is 1, then
0026 the a_bus_req shall be 0.
0027
0028 Valid values are "1" and "0".
0029
0030 Reading: returns 1 if the bus is off(vbus is turned off) by
0031 A-device, otherwise 0.
0032
0033 What: /sys/bus/platform/devices/ci_hdrc.0/inputs/b_bus_req
0034 Date: Feb 2014
0035 Contact: Li Jun <jun.li@nxp.com>
0036 Description:
0037 Can be set and read.
0038 The b_bus_req(B-device bus request) input is 1 during the time
0039 that the application running on the B-device wants to use the
0040 bus as host, and is 0 when the application no longer wants to
0041 work as host and decides to switch back to be peripheral.
0042
0043 Valid values are "1" and "0".
0044
0045 Reading: returns if the application running on the B device
0046 is using the bus as host role, otherwise 0.
0047
0048 What: /sys/bus/platform/devices/ci_hdrc.0/inputs/a_clr_err
0049 Date: Feb 2014
0050 Contact: Li Jun <jun.li@nxp.com>
0051 Description:
0052 Only can be set.
0053 The a_clr_err(A-device Vbus error clear) input is used to clear
0054 vbus error, then A-device will power down the bus.
0055
0056 Valid value is "1"
