how to set backlight pwms on imx6ull

[gokmenavci]

i want to use a lcd and i need pwm signal 20 kHz

how can i use pwm on imx6ull evk ?

[art]

The Linux BSP already contains the PWM driver, refer to the Section 2.5 of the attached document for more information.

Have a great day,
Artur

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[gokmenavci]

yes, i checked the document. But i dont understand how i change the pwm period. the Linux BSP pwm period 200Hz but i need 20kHz for my LCD screen. How can i change it. In the document there is some software operation function. i dont know how to use these.

Any body can tell me ?