Hi all,
My nfc_int_pi1 node is config as below,
nfc_en_pi0 {
nvidia,pins = "nfc_en_pi0";
nvidia,function = "rsvd0";
nvidia,pull = <0x0>;
nvidia,tristate = <0x0>;
nvidia,enable-input = <0x0>;
};
But when I use " root@linux:/home/sercomm# echo 64 > /sys/class/gpio/export" command on our customized board base on the Nano production moudle, it turns out failure.
root@linux:/home/sercomm# echo 64 > /sys/class/gpio/export
bash: echo: write error: Device or resource busy
But with the same Image and dtb in our Nanno devKit, it is Okay.
What makes it happen?