Hi we are using tft screen which using pwm-backlight module for backlight control when the pwm is controlled manually the backlight ok but when the backlight module is configure at dts file the module appears at /sys/class/backlight but when brightness is being change nothing happens. the pwm and…

There is nothing special. That upstream driver is called backlight driver just because it will use some information from the display. But that thing is not happened in your side. I mean there is no display. Thus, you can just use the pwm function call from it and write your own driver. Actually,…

Ok Thank’s for the assistance to debug the issue

Backlight pwm is not working

Robotics & Edge Computing Jetson Systems Jetson AGX Xavier

yehonatans68sw4 September 1, 2021, 5:23am 22

Thank’s for the assistance to debug the issue

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Backlight pwm is not working

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