how to check the GPIO's which are available in *.dts file in linux.

Hi,

You may need to boot your board once with the linux binaries/images.

From the log you can identify the gpiochip_id, the base address of gpio and the number bits configured in the gpio controller w.r.t your device tree *.dts file.

example from the boot log-

gpiochip_find_base: found new base at 480

gpio gpiochip0: (/soc/gpio@0xf9000270): added GPIO chardev (254:0)

gpio gpiochip0: registered GPIOs 480 to 511 on /soc/gpio@0xf9000270

*.dts file is having the node--> gpio@0xf9000270 with 32 bit.

Same you can verify from your boot log and the device tree. Later on export the gpio and set the direction. Reference-https://www.ics.com/blog/gpio-programming-using-sysfs-interface

Regards

Tiwari