From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- Documentation/ABI/testing/sysfs-bus-platform | 56 ++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-platform (limited to 'Documentation/ABI/testing/sysfs-bus-platform') diff --git a/Documentation/ABI/testing/sysfs-bus-platform b/Documentation/ABI/testing/sysfs-bus-platform new file mode 100644 index 0000000000..c4dfe7355c --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-platform @@ -0,0 +1,56 @@ +What: /sys/bus/platform/devices/.../driver_override +Date: April 2014 +Contact: Kim Phillips +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-platform > \ + 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. + +What: /sys/bus/platform/devices/.../numa_node +Date: June 2020 +Contact: Barry Song +Description: + This file contains the NUMA node to which the platform device + is attached. It won't be visible if the node is unknown. The + value comes from an ACPI _PXM method or a similar firmware + source. Initial users for this file would be devices like + arm smmu which are populated by arm64 acpi_iort. + +What: /sys/bus/platform/devices/.../msi_irqs/ +Date: August 2021 +Contact: Barry Song +Description: + The /sys/devices/.../msi_irqs directory contains a variable set + of files, with each file being named after a corresponding msi + irq vector allocated to that device. + +What: /sys/bus/platform/devices/.../msi_irqs/ +Date: August 2021 +Contact: Barry Song +Description: + This attribute will show "msi" if is a valid msi irq + +What: /sys/bus/platform/devices/.../modalias +Description: + Same as MODALIAS in the uevent at device creation. + + A platform device that it is exposed via devicetree uses: + + - of:N`of node name`T`type` + + Other platform devices use, instead: + + - platform:`driver name` -- cgit v1.2.3