GPIO

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S5P4418/S5P6818 GPIO pin definition

See pin definition, total GPIOA ~ GPIOD 4 group，
Use the following command to see the GPIO pins.

#/bin/sh
cd /sys/class/gpio
for i in gpiochip* ; do echo `cat $i/label`: `cat $i/base` ; done

Output on T2:

nxp-gpio.0: 0
nxp-gpio.4: 128
nxp-gpio.5: 160
nxp-gpio.1: 32
nxp-gpio.2: 64
nxp-gpio.3: 96

Each label represents a group, and the above shows 6 groups.
Then the corresponding is:

nxp-gpio.0: 0         -> GPIOA
nxp-gpio.4: 128         -> GPIOE  ->AliveGPIO3
nxp-gpio.5: 160         -> GPIOF  ->AliveGPIO5
nxp-gpio.1: 32         -> GPIOB
nxp-gpio.2: 64         -> GPIOC
nxp-gpio.3: 96         -> GPIOD

The difference between each group is 32, which is checked by the cat gpiochip0/ngpio command.