13cf38571SAntonios MotakisWhat:		/sys/bus/amba/devices/.../driver_override
23cf38571SAntonios MotakisDate:		September 2014
33cf38571SAntonios MotakisContact:	Antonios Motakis <a.motakis@virtualopensystems.com>
43cf38571SAntonios MotakisDescription:
53cf38571SAntonios Motakis		This file allows the driver for a device to be specified which
63cf38571SAntonios Motakis		will override standard OF, ACPI, ID table, and name matching.
73cf38571SAntonios Motakis		When specified, only a driver with a name matching the value
83cf38571SAntonios Motakis		written to driver_override will have an opportunity to bind to
93cf38571SAntonios Motakis		the device. The override is specified by writing a string to the
103cf38571SAntonios Motakis		driver_override file (echo vfio-amba > driver_override)	and may
113cf38571SAntonios Motakis		be cleared with an empty string (echo > driver_override).
123cf38571SAntonios Motakis		This returns the device to standard matching rules binding.
133cf38571SAntonios Motakis		Writing to driver_override does not automatically unbind the
143cf38571SAntonios Motakis		device from its current driver or make any attempt to
153cf38571SAntonios Motakis		automatically load the specified driver. If no driver with a
163cf38571SAntonios Motakis		matching name is currently loaded in the kernel, the device will
173cf38571SAntonios Motakis		not bind to any driver. This also allows devices to opt-out of
183cf38571SAntonios Motakis		driver binding using a driver_override name such as "none".
193cf38571SAntonios Motakis		Only a single driver may be specified in the override, there is
203cf38571SAntonios Motakis		no support for parsing delimiters.
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