AM625: AM625

Tool/software:

Dear team,

I want to control the backlight of the display using the backlight driver integrated with the TI AM625 board.

Attaching DTS configuration:

arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi

	backlight {
		compatible = "pwm-backlight";
		pwms = <&epwm1 0 40000 1>; 
		brightness-levels = <0 4 8 16 32 64 128 255>;
		default-brightness-level = <255>;
		linux,default-trigger = "default-on";
		status = "okay";
	};
	
	
main_pr0_ecap0_pins_default: main-pr0-ecap0-pins-default {
		pinctrl-single,pins = <
			AM62X_IOPAD(0x01a0, PIN_OUTPUT_PULLUP, 6) /* E18 //(B20) MCASP0_ACLKX.ECAP2_IN_APWM_OUT */
		>;
	};

&epwm1 {
	pinctrl-names = "default";
	pinctrl-0 = <&main_pr0_ecap0_pins_default>;
	status = "okay";
};

Device output :

"root@am62xx-evm:/sys/class/backlight/backlight# ls
actual_brightness bl_power brightness device max_brightness power scale subsystem type uevent
root@am62xx-evm:/sys/class/backlight/backlight#
"

Currently I am controlling  backlight with below method :

echo 1 > /sys/class/pwm/pwmchip0/export
echo 40000 > /sys/class/pwm/pwmchip0/pwm1/period
echo 10000 > /sys/class/pwm/pwmchip0/pwm1/duty_cycle
echo 1 > /sys/class/pwm/pwmchip0/pwm1/enable

I want to control the brightness levels through the backlight driver, which exposes the necessary functionality to adjust the levels.

Thank you