How to add modified device tree with PWM control backlight

[Yli.8]

My circuit board USES PE6 to control the backlight, but it cannot be adjusted. How to modify the device tree of TIM15_CH2.EV1 is not regulated.

EV1:

panel_backlight: panel-backlight {

compatible = "gpio-backlight";

gpios = <&gpiod 13 GPIO_ACTIVE_LOW>;

default-on;

status = "okay";

};

[waclawek.jan]

Which chip are you talking about?

JW

[Yli.8]

I use stm32mp157aac, may I ask how to configure PWM control backlight

[waclawek.jan]

You should probably ask this question in a different forum https://community.st.com/s/topic/0TO0X0000003u2AWAQ/stm32-mpus

JW

[Yli.8]

I think maybe I made a mistake