IMX6 GPIO CONTROL PROBLEM

[sebastianpszczo]

Hi,

I have problem with GPIO pin on Board sabre SDP. When I export by SYSF pin EIM_DA0 I can't change value of this pin but when I export pin EIM_D18 I can change value without problem(I checked on osciloscope). I didn't see in device tree any configuration of that both pin but one work(EIM_D18)  and  EIM_DA0 doesn't. Do I need export pin to DeviceTree when I want use it as GPIO in SYSFS? Thank you

[weidong_sun]

Hello bb,

    Yes, you need to add it to device tree and multiplex it as GPIO.

Best Regards,

Weidong