Issue
How to check if the device is present in device tree using /proc/device-tree?
id='dv4'>
Solution
/proc/device-tree will give you info only about the configured information and not about the running status of the device. If the device driver is not creating/using a folder in /proc directory then I think you should better look under /sys/class to see if the device is available and also the current status.
Answered By - ioko Answer Checked By - Mary Flores (WPSolving Volunteer)