NanoPi 2 GPIO pin mappings

I was wondering how are the nanoPI2 physical GPIO pins mapped into SYSFS.
For example which SYSFS 'gpioxx' value would correspond to the physical
GPIOB29?

hello，
     If  you  want to use NanoPi 2 physical GPIO pins , you  can refer to
the following steps:

# cd /sys/class/gpio  

# for i in gpiochip* ; do  echo `cat $i/label`: `cat $i/base` ; done   

nxp-gpio.0:0

nxp-gpio.4:128

nxp-gpio.5:160

nxp-gpio.1:32

nxp-gpio.2:64

nxp-gpio.3:96

Actually the gpio.0 express GPIOA, gpio.1 express GPIOB...

For example , if you want to use GPIOB30 of NanoPi 2 , we can use the GPIO
such as :64 + 30 = 94.

Hi,

if you want gpio port,

fisrt 

echo 94 > /sys/class/gpio/export

then 

you can see new gpio94 device

have a good time