In linux-6.15.68, in Documentation/devicetree/bindings/pci/rockchip-pcie-ep.txt, I see these explanations. (please see the marked line.) In the exa ...
In linux-6.15.68, in Documentation/devicetree/bindings/pci/rockchip-pcie-ep.txt, I see these explanations. (please see the marked line.) In the exa ...
I can't understand how the device tree information is used in a specific driver. This is a code snippet from linux-6.15.68 drivers/pci/controller/dwc/ ...
Grabing the distribution name (i.e Ubuntu, Red Hat Enterprise Linux) is very easy through command line for example - one can fetch the information fro ...
I have a ST7580 Power line communication modem connected to a BeagleBone Black device running Debian Linux, kernel v4.19. I am trying to communicate w ...
In linux-5.15.68 source tree, I tried to search for the definition of function 'pci_write_config_dword' and this was calling 'pci_bus_write_config_dwo ...
I wanted to test cma-allocator in linux (5.15.68). So I added linux,cma node in the /reserved-memory node like this. BTW, this test was done on qem ...
Am I overcomplicating things, or is this actually the easiest way of doing this? I need a piece of software, that would allow me to force any given p ...
Linux Kernel docs says essential packages for Linux Kernel Build. https://docs.kernel.org/process/bhanges.html There are many packages to install ! ...
I have write a linux driver program. and the main code is: I tapped the command: the main output is: Why the output %p 32ba0e06 and the outpu ...
I have multiple boards which were having different screen sizes(4",7",12" etc...). I need this info at multiple places in the Linux Kernel during boot ...
I have come across a scenario where two drivers (driver1 and driver2) are registering with kernel using module_init(). driver1 is configuring the chip ...
I want to find the source code for __bad_copy_from and __bad_copy_to, but I can't seem to find it. How can I analyze this code? From thread_info.h: ...
I'm using Orange Pi3 LTS with Allwinner H6 ARM CPU. I'm writing now UART driver with DMA for Rx and Tx. I allocated physical RAM memory using kmalloc( ...
I want to monitor the HDMI cable state in my code. there is a file that changes when the cable gets connected and disconnected. $cat /sys/devices/soc ...
I'm working on a Linux filesystem driver and I've got the hang of generating a superblock, creating inodes and dentry's, and making them handle reads ...
I read about pr_cont() in the documentation here but still not clear. The documentation says that it : Continues a previous log message in the sam ...
I'm writing a Linux filesystem driver, and found this code in a tutorial. From there, I came across this modified version of the previous code, which ...
I am trying to modify and compile usbmouse.c While compiling it is saying that the function usb_maxpackets requires 3 arguments but the code I copied ...
I am trying to use the PCF85063A RTC device on a Toradex Colibry i.MX7D processor. Used Setup: Colibri iMX7D 1 GB V1.1A Kernel 5.4.161-5.6.0-de ...
I use libfdt and I have trouble to get right address-cell/size-cells values from reserved memory region node (leaf) into my device tree. fdt_address_c ...