projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| f99858e0 LJ |
1 | What: /sys/bus/platform/devices/ci_hdrc.0/inputs/a_bus_req |
| 2 | Date: Feb 2014 | |
| 3 | Contact: Li Jun <b47624@freescale.com> | |
| 4 | Description: | |
| 5 | Can be set and read. | |
| 6 | Set a_bus_req(A-device bus request) input to be 1 if | |
| 7 | the application running on the A-device wants to use the bus, | |
| 8 | and to be 0 when the application no longer wants to use | |
| 9 | the bus(or wants to work as peripheral). a_bus_req can also | |
| 10 | be set to 1 by kernel in response to remote wakeup signaling | |
| 11 | from the B-device, the A-device should decide to resume the bus. | |
| 12 | ||
| 13 | Valid values are "1" and "0". | |
| 14 | ||
| 15 | Reading: returns 1 if the application running on the A-device | |
| 16 | is using the bus as host role, otherwise 0. | |
| 17 | ||
| 18 | What: /sys/bus/platform/devices/ci_hdrc.0/inputs/a_bus_drop | |
| 19 | Date: Feb 2014 | |
| 20 | Contact: Li Jun <b47624@freescale.com> | |
| 21 | Description: | |
| 22 | Can be set and read | |
| 23 | The a_bus_drop(A-device bus drop) input is 1 when the | |
| 24 | application running on the A-device wants to power down | |
| 25 | the bus, and is 0 otherwise, When a_bus_drop is 1, then | |
| 26 | the a_bus_req shall be 0. | |
| 27 | ||
| 28 | Valid values are "1" and "0". | |
| 29 | ||
| 30 | Reading: returns 1 if the bus is off(vbus is turned off) by | |
| 31 | A-device, otherwise 0. | |
| 32 | ||
| 33 | What: /sys/bus/platform/devices/ci_hdrc.0/inputs/b_bus_req | |
| 34 | Date: Feb 2014 | |
| 35 | Contact: Li Jun <b47624@freescale.com> | |
| 36 | Description: | |
| 37 | Can be set and read. | |
| 38 | The b_bus_req(B-device bus request) input is 1 during the time | |
| 39 | that the application running on the B-device wants to use the | |
| 40 | bus as host, and is 0 when the application no longer wants to | |
| 41 | work as host and decides to switch back to be peripheral. | |
| 42 | ||
| 43 | Valid values are "1" and "0". | |
| 44 | ||
| 45 | Reading: returns if the application running on the B device | |
| 46 | is using the bus as host role, otherwise 0. | |
| 47 | ||
| 48 | What: /sys/bus/platform/devices/ci_hdrc.0/inputs/a_clr_err | |
| 49 | Date: Feb 2014 | |
| 50 | Contact: Li Jun <b47624@freescale.com> | |
| 51 | Description: | |
| 52 | Only can be set. | |
| 53 | The a_clr_err(A-device Vbus error clear) input is used to clear | |
| 54 | vbus error, then A-device will power down the bus. | |
| 55 | ||
| 56 | Valid value is "1" |