I have a DM3730 with the dmtimer (timer10) controlling the pwm backlight for my LCD. pwms = <&pwm10 0 5000000 0>; brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>; default-brightness-level = <7>; If I cat /dev/urandom > /dev/fb0 to setup a test pattern then start to change the brightness in user-space, there is a momentary flicker on the backlight when the backlight changes intensity. Screens that are predominantly black are not as noticeable. We also have a Win CE implementation on the same board which does not do this, so I believe it to be software related and not hardware. Has anyone else noticed this? If so, might you have any suggestions to reducing this? I checked 4.9.y and 4.11.y and both seem to exhibit the same behavior. I don't have other pwm options, so I cannot determine if this is a problem with dmtimer or the pwm-bl driver. adam -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
