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From: Antonios Motakis <a.motakis@virtualopensystems.com>
To: alex.williamson@redhat.com, kvmarm@lists.cs.columbia.edu,
	iommu@lists.linux-foundation.org
Cc: tech@virtualopensystems.com, kvm@vger.kernel.org,
	christoffer.dall@linaro.org, will.deacon@arm.com,
	kim.phillips@freescale.com, eric.auger@linaro.org,
	marc.zyngier@arm.com,
	Antonios Motakis <a.motakis@virtualopensystems.com>,
	linux-api@vger.kernel.org (open list:ABI/API),
	linux-kernel@vger.kernel.org (open list)
Subject: [PATCHv7 08/26] driver core: amba: add documentation for binding path 'driver_override'
Date: Tue, 23 Sep 2014 16:46:07 +0200	[thread overview]
Message-ID: <1411483586-29304-9-git-send-email-a.motakis@virtualopensystems.com> (raw)
In-Reply-To: <1411483586-29304-1-git-send-email-a.motakis@virtualopensystems.com>

Add documentation for alternative binding path 'driver_override' for
AMBA devices.

Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com>
---
 Documentation/ABI/testing/sysfs-bus-amba | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-amba

diff --git a/Documentation/ABI/testing/sysfs-bus-amba b/Documentation/ABI/testing/sysfs-bus-amba
new file mode 100644
index 0000000..e7b5467
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-amba
@@ -0,0 +1,20 @@
+What:		/sys/bus/amba/devices/.../driver_override
+Date:		September 2014
+Contact:	Antonios Motakis <a.motakis@virtualopensystems.com>
+Description:
+		This file allows the driver for a device to be specified which
+		will override standard OF, ACPI, ID table, and name matching.
+		When specified, only a driver with a name matching the value
+		written to driver_override will have an opportunity to bind to
+		the device. The override is specified by writing a string to the
+		driver_override file (echo vfio-amba > driver_override)	and may
+		be cleared with an empty string (echo > driver_override).
+		This returns the device to standard matching rules binding.
+		Writing to driver_override does not automatically unbind the
+		device from its current driver or make any attempt to
+		automatically load the specified driver. If no driver with a
+		matching name is currently loaded in the kernel, the device will
+		not bind to any driver. This also allows devices to opt-out of
+		driver binding using a driver_override name such as "none".
+		Only a single driver may be specified in the override, there is
+		no support for parsing delimiters.
-- 
1.8.3.2


  parent reply	other threads:[~2014-09-23 14:47 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1411483586-29304-1-git-send-email-a.motakis@virtualopensystems.com>
2014-09-23 14:46 ` [PATCHv7 01/26] iommu/arm-smmu: change IOMMU_EXEC to IOMMU_NOEXEC Antonios Motakis
2014-09-23 14:58   ` Will Deacon
2014-09-23 22:14     ` Alex Williamson
2014-09-23 14:46 ` [PATCHv7 02/26] iommu: add capability IOMMU_CAP_NOEXEC Antonios Motakis
2014-09-26  9:48   ` Joerg Roedel
2014-09-26 15:00     ` Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 03/26] iommu/arm-smmu: add IOMMU_CAP_NOEXEC to the ARM SMMU driver Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 04/26] vfio/iommu_type1: support for platform bus devices on ARM Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 05/26] vfio: introduce the VFIO_DMA_MAP_FLAG_NOEXEC flag Antonios Motakis
2014-09-23 22:21   ` Alex Williamson
2014-09-23 22:30     ` Alex Williamson
2014-09-26 15:45       ` Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 06/26] vfio/iommu_type1: implement " Antonios Motakis
2014-09-23 22:40   ` Alex Williamson
2014-09-26 15:39     ` Antonios Motakis
2014-09-26 20:27       ` Alex Williamson
2014-09-29 10:38         ` Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 07/26] driver core: amba: add device binding path 'driver_override' Antonios Motakis
2014-09-23 22:45   ` Alex Williamson
2014-09-26 15:10     ` Antonios Motakis
2014-09-26 15:37   ` Russell King - ARM Linux
2014-09-29 10:14     ` Antonios Motakis
2014-10-08 12:18     ` Antonios Motakis
2014-09-23 14:46 ` Antonios Motakis [this message]
2014-09-23 14:46 ` [PATCHv7 09/26] vfio/platform: initial skeleton of VFIO support for platform devices Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 10/26] vfio: platform: probe to devices on the platform bus Antonios Motakis
2014-09-23 23:01   ` Alex Williamson
2014-09-26 15:30     ` Antonios Motakis
2014-09-26 20:18       ` Alex Williamson
2014-09-29 10:21         ` Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 11/26] vfio: platform: add the VFIO PLATFORM module to Kconfig Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 12/26] vfio: amba: VFIO support for AMBA devices Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 13/26] vfio: amba: add the VFIO for AMBA devices module to Kconfig Antonios Motakis
2014-09-23 23:11   ` Alex Williamson
2014-09-26 15:06     ` Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 14/26] vfio/platform: return info for bound device Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 15/26] vfio/platform: return info for device memory mapped IO regions Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 16/26] vfio/platform: read and write support for the device fd Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 17/26] vfio/platform: support MMAP of MMIO regions Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 18/26] vfio/platform: return IRQ info Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 19/26] vfio/platform: initial interrupts support code Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 20/26] vfio/platform: trigger an interrupt via eventfd Antonios Motakis
2014-09-24 17:00   ` Alex Williamson
2014-09-26 15:03     ` Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 21/26] vfio/platform: support for maskable and automasked interrupts Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 22/26] vfio: move eventfd support code for VFIO_PCI to a separate file Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 23/26] vfio: add local lock in virqfd instead of depending on VFIO PCI Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 24/26] vfio: pass an opaque pointer on virqfd initialization Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 25/26] vfio: initialize the virqfd workqueue in VFIO generic code Antonios Motakis
2014-09-23 14:46 ` [PATCHv7 26/26] vfio/platform: implement IRQ masking/unmasking via an eventfd Antonios Motakis

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