I am using DART 6UL CPU for one of my custom board
I want to configure 8 Digital Input pins out of which I have successfully configured 7.
But I am not able to drive GPIO1_0 as an input pin.
I removed GPIO1_0 from my dtsi file, in order to make it usable from user space.
I can configure pin as input using
echo 0 > /sys/class/gpio/export
echo in > /sys/class/gpio/gpio0/direction
and it also appears in the /sys/kernel/debug/gpio list.
But it do not change its value when driven high or low.
Can anybody help me out here ??
1. What could be possible cause ?
2. If uboot source could the reason , where i can find source file and where to look for it ?
3. Is there anyother way I can free the pin, to make sure it is not configured by kernel !
Thank you in advance.