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.