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Antonios Motakis3cf38572015-01-06 11:15:11 +01001What: /sys/bus/amba/devices/.../driver_override
2Date: September 2014
3Contact: Antonios Motakis <a.motakis@virtualopensystems.com>
4Description:
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 to
9 the device. The override is specified by writing a string to the
10 driver_override file (echo vfio-amba > driver_override) and may
11 be cleared with an empty string (echo > driver_override).
12 This returns the device to standard matching rules binding.
13 Writing to driver_override does not automatically unbind the
14 device from its current driver or make any attempt to
15 automatically load the specified driver. If no driver with a
16 matching name is currently loaded in the kernel, the device will
17 not bind to any driver. This also allows devices to opt-out of
18 driver binding using a driver_override name such as "none".
19 Only a single driver may be specified in the override, there is
20 no support for parsing delimiters.