What is a platform bus?

What is a platform bus?

The term platform bus refers to a specific Fuchsia driver with source code located at //fuchsia/src/devices/bus/drivers/platform/. On arm64 platforms, the platform bus driver uses information from the bootloader or boot shim to bind the correct board driver for the platform it is running on.

What are platform devices?

Platform devices are given a name, used in driver binding, and a list of resources such as addresses and IRQs: struct platform_device { const char *name; u32 id; struct device dev; u32 num_resources; struct resource *resource; };

What is the function used to register a device?

Device driver registration driver_register() is the low-level function used to register a device driver with the bus. It adds the driver to the bus’s list of drivers.

What is probe in Linux driver?

The purpose of the probe routine is to detect devices residing on the bus and to create device nodes corresponding to these devices. The probe routine specifies a physical device ID as a device node property so that the bus driver can find the appropriate device driver for this device node.

What is the use of a bus station?

A bus station is a structure where city or intercity buses stop to pick up and drop off passengers. While the term bus depot can also be used to refer to a bus station, it generally refers to a bus garage. A bus station is larger than a bus stop, which is usually simply a place on the roadside, where buses can stop.

What are floating bus stops?

Also known as a ‘bus stop bypass’, this is an arrangement that involves a cycleway running behind the passenger boarding area at a bus stop, between an island and the footway. The bypass consists of cycle track which should be separated by kerbs from the footway, with minor level difference.

What is difference between platform driver and device driver?

Platform driver is for those devices that are on chip. Normal device driver are for those that are interfaced to the processor chip.

What is Module_device_table?

MODULE_DEVICE_TABLE is used to generate map files by depmod program; When device is hot-plugged, bus driver generates hotplug event.

Is register a hardware or software?

Hardware registers are used in the interface between software and peripherals. Software writes them to send information to the device, and reads them to get information from the device. Some hardware devices also include registers that are not visible to software, for their internal use.

What is a kernel probe?

Kernel probes are a set of tools to collect Linux kernel debugging and performance information. Developers and system administrators usually use them either to debug the kernel, or to find system performance bottlenecks. The reported data can then be used to tune the system for better performance.

How do I install drivers on Linux?

How to Download and Install the Driver on a Linux Platform

1. Use the ifconfig command to obtain a list of the current Ethernet network interfaces.
2. Once the Linux drivers file is downloaded, uncompress and unpack the drivers.
3. Select and install the appropriate OS driver package.
4. Load the driver.

How is a platform device connected to a bus?

Rarely, a platform_device will be connected through a segment of some other kind of bus; but its registers will still be directly addressable. Platform devices are given a name, used in driver binding, and a list of resources such as addresses and IRQs:

What makes up the external bus in a computer?

The external bus, or expansion bus, is made up of the electronic pathways that connect the different external devices, such as printer etc., to the computer.

What does a bus mean in computer architecture?

In computer architecture, a bus (a contraction of the Latin omnibus) is a communication system that transfers data between components inside a computer, or between computers. This expression covers all related hardware components (wire, optical fiber, etc.) and software, including communication protocols.

How are platform devices and drivers checked in Linux?

There are three different ways to find such a match: Whenever a device is registered, the drivers for that bus are checked for matches. Platform devices should be registered very early during system boot. When a driver is registered using platform_driver_register (), all unbound devices on that bus are checked for matches.