Hello
I have some questions about imx8mmini GPIO control.
"GPIO1_IO09, GPIO1_IO11, GPIO1_IO04" doesn't toggle High and Low.
GPIO1_IO04 is used for PMIC(PCA9450AAHN) "SD_VSEL"
Here are the command about gpio1_io04
echo 4 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio4/direction
High
echo 1 > /sys/class/gpio/gpio4/value
Low
echo 0 > /sys/class/gpio/gpio4/value
Here are the command about gpio1_io09
echo 9 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio9/direction
High
echo 1 > /sys/class/gpio/gpio9/value
Low
echo 0 > /sys/class/gpio/gpio9/value
Please help me why the GPIO can't be controlled.
Is there any other purpose in this GPIO pins ?
