Documentation/ABI/testing/sysfs-bus-platform

   1 What:           /sys/bus/platform/devices/.../driver_override
   2 Date:           April 2014
   3 Contact:        Kim Phillips <kim.phillips@freescale.com>
   4 Description:
   5                 This file allows the driver for a device to be specified which
   6                 will override standard OF, ACPI, ID table, and name matching.
   7                 When specified, only a driver with a name matching the value
   8                 written to driver_override will have an opportunity to bind
   9                 to the device.  The override is specified by writing a string
  10                 to the driver_override file (echo vfio-platform > \
  11                 driver_override) and may be cleared with an empty string
  12                 (echo > driver_override).  This returns the device to standard
  13                 matching rules binding.  Writing to driver_override does not
  14                 automatically unbind the device from its current driver or make
  15                 any attempt to automatically load the specified driver.  If no
  16                 driver with a matching name is currently loaded in the kernel,
  17                 the device will not bind to any driver.  This also allows
  18                 devices to opt-out of driver binding using a driver_override
  19                 name such as "none".  Only a single driver may be specified in
  20                 the override, there is no support for parsing delimiters.