Scott Thomson

Cannot get Karo TX53 backlight PWM output to turn on

Discussion created by Scott Thomson on Apr 16, 2012
Latest reply on Apr 18, 2012 by Scott Thomson


Are there any tricks to getting the PWM output (GPIO_1_PWM2_PWMO) to output anything other than zero volts other than 

echo 100 > /sys/devices/platform/mxc_pwm.1/pwm-backlight.0/backlight/pwm-backlight.0/brightness


The value is being reflected in the actual_brightness file but I get no output from the PWM pin.