How to enable PWM pin

[asadullah4571]

i am facing the issue like i could  not able to access the PWM pins
i want like this only (/sys/class/pwm/pwmchipX/).

but i get output like this only. 

{

root@stm32mp1:~# cd /sys/class/pwm/
root@stm32mp1:/sys/class/pwm# ls
root@stm32mp1:/sys/class/pwm# ls

}

Note: i am using qt quick i want to read Pins as a PWM and get back to display.

[Erwan SZYMANSKI · Accepted solution]

Hello @asadullah4571 ,
Please refer to following wiki pages :

• PWM : https://wiki.st.com/stm32mpu/wiki/PWM_overview
• Timer : https://wiki.st.com/stm32mpu/wiki/TIM_device_tree_configuration

Kind regards,
Erwan.

[asadullah4571]

i configured the kernel defconfig 
PC> bitbake -c menuconfig virtual/kernel 
i configured the PWM [M] (module) to [*] (built in).

and now comming to Device tree.
i didn't change any thing in .dtsi (stm32mp151.dtsi) (Stm32 microprocessr level) as According to your reference.
so should i change in .dts (stm32mp157f-dk2.dts) file (board level). 
i follow this one https://wiki.st.com/stm32mpu/wiki/TIM_device_tree_configuration#

i did not understand any thing 
please help me out , i stuck from the last 4 days 

[asadullah4571]

PLEASE help  me out this 

number 1.    i have to change in both menuconfig file as well as device tree.
number 2.    in which dts file i will have to add or change ( I am using STM32MP157f-dk2 board with Distribution 

                     Package) .