I am a beginner to the Linux Kernel.
In my knowledge, in the older versions of the Kernel there was a board specific file, in which all the devices were registered (by using some API s like platform_get_register, etc).
And in newer versions of the kernel the information needed for the devices are passed through the Device Tree.
My Questions are how the Kernel take the information for the drivers from device tree?
How devices get registered in kernel through Device Tree?
How linux kernel get data from the Device tree?
5.2k Views Asked by Vineesh Vijayan At
1
There are 1 best solutions below
Related Questions in LINUX-KERNEL
- PySimpleGUI matplotlib graph not showing up as popup window,and is only showing the graph in the notebook
- How to integrate code with window in PySimpleGUI
- How to make columns in listbox?
- pysimplegui keyboard event returns question mark when pressing non-ascii character
- How to change the popup size in PysimpleGUI in python?
- PySimpleGUI sg.Radio button error: __init__() missing 1 required positional argument: 'group_id'
- PySimpleGUI - Login Authenticator
- How to clear a Matplotlib subplot canvas figure when a new radio button is clicked PySimpleGUI?
- Interactive matplotlib plot in PySimpleGUI
- How to resize sg.window in PYsimpleGUI?
Related Questions in LINUX-DEVICE-DRIVER
- PySimpleGUI matplotlib graph not showing up as popup window,and is only showing the graph in the notebook
- How to integrate code with window in PySimpleGUI
- How to make columns in listbox?
- pysimplegui keyboard event returns question mark when pressing non-ascii character
- How to change the popup size in PysimpleGUI in python?
- PySimpleGUI sg.Radio button error: __init__() missing 1 required positional argument: 'group_id'
- PySimpleGUI - Login Authenticator
- How to clear a Matplotlib subplot canvas figure when a new radio button is clicked PySimpleGUI?
- Interactive matplotlib plot in PySimpleGUI
- How to resize sg.window in PYsimpleGUI?
Related Questions in DEVICE-TREE
- PySimpleGUI matplotlib graph not showing up as popup window,and is only showing the graph in the notebook
- How to integrate code with window in PySimpleGUI
- How to make columns in listbox?
- pysimplegui keyboard event returns question mark when pressing non-ascii character
- How to change the popup size in PysimpleGUI in python?
- PySimpleGUI sg.Radio button error: __init__() missing 1 required positional argument: 'group_id'
- PySimpleGUI - Login Authenticator
- How to clear a Matplotlib subplot canvas figure when a new radio button is clicked PySimpleGUI?
- Interactive matplotlib plot in PySimpleGUI
- How to resize sg.window in PYsimpleGUI?
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Popular # Hahtags
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
If you mean the OpenFirmware device trees, those are packed into a special format (dtb image) and put in RAM by the bootloader, together with the kernel image. Bootloader then invokes the kernel entry point passing the address of the dtb image in RAM as one of the parameters.
A kernel subsystem located in
<kernel>/drivers/ofsubdirectory will then walk the tree and for each device entry supported it will attempt to create the required device viadevice_add()and friends (the usual process for creating devices in Linux). If the driver subsystem can find a suitable driver, that driver's*_probe()call back will be able to obtain the parameters found in the OF device entry from the (possibly sub-classed)deviceobject passed to it.