| What: /sys/bus/greybus/devices/greybusN |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| The "root" greybus device for the Greybus device tree, or bus, |
| where N is a dynamically assigned 1-based id. |
| |
| What: /sys/bus/greybus/devices/greybusN/bus_id |
| Date: April 2016 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| The ID of the "root" greybus device, or bus. |
| |
| What: /sys/bus/greybus/devices/N-M |
| Date: March 2016 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| A Module M on the bus N, where M is the 1-byte interface |
| ID of the module's primary interface. |
| |
| What: /sys/bus/greybus/devices/N-M/eject |
| Date: March 2016 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| Writing a non-zero argument to this attibute disables the |
| module's interfaces before physically ejecting it. |
| |
| What: /sys/bus/greybus/devices/N-M/module_id |
| Date: March 2016 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| The ID of a Greybus module, corresponding to the ID of its |
| primary interface. |
| |
| What: /sys/bus/greybus/devices/N-M/num_interfaces |
| Date: March 2016 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| The number of interfaces of a module. |
| |
| What: /sys/bus/greybus/devices/N-M.I |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| An Interface I on the bus N and module N-M, where I is the |
| 1-byte interface ID. |
| |
| What: /sys/bus/greybus/devices/N-M.I/current_now |
| Date: March 2016 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| Current measurement of the interface in microamps (uA) |
| |
| What: /sys/bus/greybus/devices/N-M.I/ddbl1_manufacturer_id |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| Unipro Device Descriptor Block Level 1 manufacturer ID for the |
| greybus Interface. |
| |
| What: /sys/bus/greybus/devices/N-M.I/ddbl1_product_id |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| Unipro Device Descriptor Block Level 1 product ID for the |
| greybus Interface. |
| |
| What: /sys/bus/greybus/devices/N-M.I/interface_id |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| The ID of a Greybus interface. |
| |
| What: /sys/bus/greybus/devices/N-M.I/interface_type |
| Date: June 2016 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| The type of a Greybus interface; "dummy", "unipro", "greybus", |
| or "unknown". |
| |
| What: /sys/bus/greybus/devices/N-M.I/power_now |
| Date: March 2016 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| Power measurement of the interface in microwatts (uW) |
| |
| What: /sys/bus/greybus/devices/N-M.I/power_state |
| Date: March 2016 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| This file reflects the power state of a Greybus interface. If |
| the value read from it is "on", then power is currently |
| supplied to the interface. Otherwise it will read "off" and |
| power is currently not supplied to the interface. |
| |
| If the value read is "off", then writing "on" (or '1', 'y', |
| 'Y') to this file will enable power to the interface and an |
| attempt to boot and possibly enumerate it will be made. Note |
| that on errors, the interface will again be powered down. |
| |
| If the value read is "on", then writing "off" (or '0', 'n', |
| 'N') to this file will power down the interface. |
| |
| What: /sys/bus/greybus/devices/N-M.I/product_id |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| Product ID of a Greybus interface. |
| |
| What: /sys/bus/greybus/devices/N-M.I/serial_number |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| Serial Number of the Greybus interface, represented by a 64 bit |
| hexadecimal number. |
| |
| What: /sys/bus/greybus/devices/N-M.I/vendor_id |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| Vendor ID of a Greybus interface. |
| |
| What: /sys/bus/greybus/devices/N-M.I/voltage_now |
| Date: March 2016 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| Voltage measurement of the interface in microvolts (uV) |
| |
| What: /sys/bus/greybus/devices/N-M.I.ctrl |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| Abstract control device for interface I that represents the |
| current mode of an enumerated Greybus interface. |
| |
| What: /sys/bus/greybus/devices/N-M.I.ctrl/product_string |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| Product ID string of a Greybus interface. |
| |
| What: /sys/bus/greybus/devices/N-M.I.ctrl/vendor_string |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| Vendor ID string of a Greybus interface. |
| |
| What: /sys/bus/greybus/devices/N-M.I.B |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| A bundle B on the Interface I, B is replaced by a 1-byte |
| number representing the bundle. |
| |
| What: /sys/bus/greybus/devices/N-M.I.B/bundle_class |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| The greybus class of the bundle B. |
| |
| What: /sys/bus/greybus/devices/N-M.I.B/bundle_id |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| The interface-unique id of the bundle B. |
| |
| What: /sys/bus/greybus/devices/N-M.I.B/gpbX |
| Date: April 2016 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| The General Purpose Bridged PHY device of the bundle B, |
| where X is a dynamically assigned 0-based id. |
| |
| What: /sys/bus/greybus/devices/N-M.I.B/state |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| A bundle has a state that is managed by the userspace |
| Endo process. This file allows that Endo to signal |
| other Android HALs that the state of the bundle has |
| changed to a specific value. When written to, any |
| process watching the file will be woken up, and the new |
| value can be read. It's a "poor-man's IPC", yes, but |
| simplifies the Android userspace code immensely. |
| |
| What: /sys/bus/greybus/devices/N-svc |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| The singleton SVC device of bus N. |
| |
| What: /sys/bus/greybus/devices/N-svc/ap_intf_id |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| The AP interface ID, a 1-byte non-zero integer which |
| defines the position of the AP module on the frame. |
| The interface positions are defined in the GMP |
| Module Developer Kit. |
| |
| What: /sys/bus/greybus/devices/N-svc/endo_id |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| The Endo ID, which is a 2-byte hexadecimal value |
| defined by the Endo layout scheme, documented in |
| the GMP Module Developer Kit. |
| |
| What: /sys/bus/greybus/devices/N-svc/intf_eject |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| Write the number of the interface that you wish to |
| forcibly eject from the system. |
| |
| What: /sys/bus/greybus/devices/N-svc/version |
| Date: October 2015 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| The version number of the firmware in the SVC device. |
| |
| What: /sys/bus/greybus/devices/N-svc/watchdog |
| Date: October 2016 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| If the SVC watchdog is enabled or not. Writing 0 to this |
| file will disable the watchdog, writing 1 will enable it. |
| |
| What: /sys/bus/greybus/devices/N-svc/watchdog_action |
| Date: July 2016 |
| KernelVersion: 4.XX |
| Contact: Greg Kroah-Hartman <greg@kroah.com> |
| Description: |
| This attribute indicates the action to be performed upon SVC |
| watchdog bite. |
| |
| The action can be one of the "reset" or "panic". Writing either |
| one of the "reset" or "panic" will change the behavior of SVC |
| watchdog bite. Default value is "reset". |
| |
| "reset" means the UniPro subsystem is to be reset. |
| |
| "panic" means SVC watchdog bite will cause kernel to panic. |
